DIYstompboxes.com

I figured, since the normal pictures thread is in the stompbox forum, we needed a place to put pics of all of our.. off-topic electronics projects.

Amplifiers, guitars, test equipment, weird gadgetry... you name it.

All the posts in the "Pictures!" thread that add "I know this is off topic, but here's my..." kind of started to irk me  :icon_rolleyes:

Given the way the pictures thread is going wouldn't it be a good idea to have a permanent gallery thread / area ? Somewhere on the forum? It is inevitable that the picture threads will last as long as the forum. I know I have picked up some good ideas from the pictures thread.
Just a thought.

A lot of this stuff is already in the layouts gallery. No reason you can't use that, that I can tell.

I like the idea ... I've spent a long time building a frequency counter so I could make accurate low frequency measurements and I've been reluctant to post it in the regular 'picture' thread though the occasional 'other' thing shows up ...

Quote from: DougH on August 18, 2009, 03:40:17 PM
A lot of this stuff is already in the layouts gallery. No reason you can't use that, that I can tell.

I think some people like the way that the Pictures thread provides a higher chance of someone responding with "Wow, that's awesome!". The gallery is more of a repository than a showing-off area. ;D

okay.  giving this a go. Should it be here, or in the main forum?

here is DIY frequency counter ... a long time in the making. Sits on top of my DIY frequency generator(needs modding), which is displaying the lowest freq. it can generate ...

incorporated a x100 multiplier to get 2 decimal point resolution, a 0.1s time base to get quicker display refreshes, leading 0 blanking display.
Could not figure out how to multiplex the display and make it as bright as separate driver per digit as well as providing the leading 0 blanking so ended up with a board just to drive the display.

http://www.aronnelson.com/gallery/main.php/v/Schematics-etc/freq_count_1.JPG.html

http://www.aronnelson.com/gallery/main.php/v/Schematics-etc/freq_count_2.JPG.html

http://www.aronnelson.com/gallery/main.php/v/Schematics-etc/freq_count_3.JPG.html

Quote from: scratch on August 21, 2009, 12:15:07 AM
okay.  giving this a go. Should it be here, or in the main forum?

here is DIY frequency counter ... a long time in the making. Sits on top of my DIY frequency generator(needs modding), which is displaying the lowest freq. it can generate ...

incorporated a x100 multiplier to get 2 decimal point resolution, a 0.1s time base to get quicker display refreshes, leading 0 blanking display.
Could not figure out how to multiplex the display and make it as bright as separate driver per digit as well as providing the leading 0 blanking so ended up with a board just to drive the display.

http://www.aronnelson.com/gallery/main.php/v/Schematics-etc/freq_count_1.JPG.html

http://www.aronnelson.com/gallery/main.php/v/Schematics-etc/freq_count_2.JPG.html

http://www.aronnelson.com/gallery/main.php/v/Schematics-etc/freq_count_3.JPG.html

I hope we can get this started, thanks for the first submission!

I have a feeling that once people start posting on this topic, it will become a "second stop" for all those visitors who click away to the Pictures! forum as soon as they log on, and it'll start growing the same way.



Impressive work, to say the least!

Especially the massive (resistor networks?) discrete display driver  :icon_eek:

thanks.

8 digits for the counter, so one driver chip and one resistor 'chip' per digit ...

yup, it adds up fast.

In stark contrast to the complexity and expert workmanship of the project presented above, stands my rustic little metronome project.
It's built inside a cedar souvenir box I picked up at a thrift shop. The cedar wood projects a clean, pleasant, woodsy aroma while I practice - and keeps those pesky moths away too.
The circuit is from Craig Anderton's Electronic Projects For Musicians book.

(http://i109.photobucket.com/albums/n72/Eternal_Isolation/misc/metronome1.jpg) (http://i109.photobucket.com/albums/n72/Eternal_Isolation/misc/metronome2.jpg) (http://i109.photobucket.com/albums/n72/Eternal_Isolation/misc/metronome3.jpg)

KORGULL, nice build. I like  the hinged lid top. The Anderton metronome was one of my first builds too, made it for a drummer friend of mine, instead of a speaker put a headphone jack and a volume control. I think he might still have it! I'll have to check with him.

Thanks scratch.  :icon_smile:
Yeah, for a drummer, I imagine a headphone jack + vol. control would be a must. When I was building it, I thought about adding an output jack so I could run it through an amp/PA, but decided to keep it simple and just use it when practicing with an acoustic guitar or low volume on the electric.

continuing our OT pictures ...

a simple cable tester I built, just switches, jacks and LED's ...

http://www.aronnelson.com/gallery/main.php/v/Schematics-etc/cable-tester.JPG.html (http://www.aronnelson.com/gallery/main.php/v/Schematics-etc/cable-tester.JPG.html)

http://www.aronnelson.com/gallery/main.php/v/Schematics-etc/cable-tester.JPG

exactly how does one post pictures so that they show up 'inline' in the posting rather than a url ??? I've tried various combinations of  the 'insert image' button, etc. either nothing shows up at all, or only the url, even tried taking the .htm off the end of the url, no difference.

Quote from: scratch on September 03, 2009, 08:53:27 PM
exactly how does one post pictures so that they show up 'inline' in the posting rather than a url ??? I've tried various combinations of  the 'insert image' button, etc. either nothing shows up at all, or only the url, even tried taking the .htm off the end of the url, no difference.

If you have .htm at the end of the URL, it's not an image. See if you can find a direct link to the image file. For the one you posted, the URL would be http://www.aronnelson.com/gallery/main.php?g2_view=core.DownloadItem&g2_itemId=40435&g2_serialNumber=2 (http://www.aronnelson.com/gallery/main.php?g2_view=core.DownloadItem&g2_itemId=40435&g2_serialNumber=2). In Firefox, you can right click on the image and choose 'copy image location'. Note that this case is a bit atypical, as the image URL doesn't end in .jpg/.png/etc. - still works though. Just put that in an [img] tag, (You can use the 'insert image' button to add one), and it should work.

Here's a quick gallery of my guitar build.  On my 16th birthday, I collected all my gift money from the holidays and planned a guitar build and ending up making my dream guitar

The mahogany Jem body with half the face with flamed maple veneer
(http://img156.imageshack.us/img156/8831/dscn2118.jpg)

Staining a strong green with a hint of blue
(http://img7.imageshack.us/img7/2079/dscn2244p.jpg)

Stained a blueburst around the guitar (love it)
(http://img181.imageshack.us/img181/2064/dscn2255.jpg)

Preparing to spray a blackburst with this technique after finishing sanding sealer
(http://img3.imageshack.us/img3/2686/dscn2573vl.jpg)

Blackburst applied, the blueburst is still present but hard to see in this pic
(http://img2.imageshack.us/img2/1318/dscn2583a.jpg)

Clear coat applied and sanded down and polished
(http://img143.imageshack.us/img143/6940/dscn3081.jpg)
(http://img137.imageshack.us/img137/2682/dscn3127.jpg)

(http://img515.imageshack.us/img515/5051/dscn3126.jpg)

(http://img197.imageshack.us/img197/6527/dscn3125h.jpg)

 Josh, thanks for that ... I'll give it a try, that is likely my problem as I was taking the url from the top of the page.

DUY1337 ... Wow! very nice work. Looking forward to seeing the finished product.

audio 'gadgets' ... passive 1 in 2 outs, I called them Y-BOXes ... in the mono version I used 14ga. wire on the off chance it got used to connect two speakers to one output.

(http://www.aronnelson.com/gallery/main.php?g2_view=core.DownloadItem&g2_itemId=40438&g2_serialNumber=2)

(http://www.aronnelson.com/gallery/main.php?g2_view=core.DownloadItem&g2_itemId=40441&g2_serialNumber=2)

(http://www.aronnelson.com/gallery/main.php?g2_view=core.DownloadItem&g2_itemId=40444&g2_serialNumber=2)

(http://www.aronnelson.com/gallery/main.php?g2_view=core.DownloadItem&g2_itemId=40447&g2_serialNumber=2)

These are two little no-chip sinewave phototheremins I have built.  I call them Space Saucers!

(http://www.moonpieinthesky.com/buildsandbends/wp-content/uploads/2009/11/paintedspacesaucers1.jpg)

They are really small, only 3x3 inches square.  The plastic bubble on top is from one of those coin-operated gumball/prize machines at the grocery store!

there so cute i just wanna take one home!!!

way to be resourceful! i like em!

Really OT - isn't it a pic that Dragonfly posted  a while back OF HIMSELF?!

http://pix.motivatedphotos.com/2009/1/13/633674714084270302-birthcontrol.jpg (http://pix.motivatedphotos.com/2009/1/13/633674714084270302-birthcontrol.jpg)

My little moonlight amp ain't cutting it no more so I just dug this out for more power.

Made years ago but nver quite turned on I'm going to finally finish it off. I'll get my bro to do some patterned bark tan leather to skin it and do the corners in hand beaten copper with brass screws. The Vogue and Super badges are from cars and the Vogue one will be on a aluminium grille.
(http://i4.photobucket.com/albums/y115/quickkiwi/artbox/ampfroV.jpg)

(http://i4.photobucket.com/albums/y115/quickkiwi/artbox/ampbotV.jpg)

whoa!! :o i am diggin the retro vibe of that enclosure!!   looks gorgeous, are you gonna paint it or just clearcoat the wood?

Wow, I am just loving your style Sean. Keep it up  :icon_biggrin:

Those car logos are a great idea! Might have to search around for some myself!

There was a old Jansen amp for sale on our version of ebay a while back and it was so art deco. The tolex was a zebra or tiger skin type style and all the knobs were a mixture of clear plastic and cream and the thing was highlighted in gold. Man it was beautiful!

So I'd already done the basic styling on this years ago but after seeing this amp I want to get my brother, who paints and refinishes leathers of all descriptions to get a thin tight leather, not upholstery or clothing style soft leather, and we'll paint up some kind of animalish stripe in some colours that'll be to wow for words.

I originally tried putting zebrawood veneer on it but that wouldn't take so I gave up so now I have this idea of covering it in leather and then putting some black walnut on the exposed outer edges and hand hammering up some copper sheet for the corners and the edges around the front.
(http://i4.photobucket.com/albums/y115/quickkiwi/artbox/speakers.jpg)
In this photo, don't worry about the ABS shelled monitor (I was told it was in a bin so I went and got it and all it needed was a correct impedance tweeter and I've since given it away to a good home), to the left is a 15" Jensen bass speaker in an old barbecue body.

I really love rounded things and I've always kinda disliked the rectangular and sqaured off enclosures we use for building tube amps so the idea that led me to the barbecue speaker enclosure, its good and easy to move it around and play feedback notes, had me thinking of hand beating up some aluminium to attach a tube amps innards to... even running some of the electrics on the outside of the enclosure and then caging it to stop dumbies getting a shock.

For me it's important that we don't take for granted the various ways we build stuff. Fx pedals and amps are rectangular and therefore efficient for the job they do but it doesn't mean we have to build them that way. Two aluminium shapes that would form almost a peanut shape would be a very interesting enclosure for a tube amp even though its efficiency as a musical instrument, in the regular sense, might be compromised the insights and directions that it would open up might be more important than the short term loss of ergonomic efficiency.

This guys work in furniture is really invigorating for me and I want to apply it to musical stuff.
(http://www.bentfabrication.com/images/art/pram.6.a1.jpg)
http://www.bentfabrication.com/pram.html (http://www.bentfabrication.com/pram.html)

Almost finshed this little amp. 12AX7 preamp into 2N5457 source follower into big muff tone then TDA2003. Schematics in a thread in the regular form. Still gotta put a handle and feet on it plus I'm going to do the grill and a hinged back ala pignose effect.
(http://i4.photobucket.com/albums/y115/quickkiwi/magicampfr.jpg)
(http://i4.photobucket.com/albums/y115/quickkiwi/magicampre.jpg)

Still haven't even plugged it in or tried it out. One other thing I'll do is, I got this from the valve wizards site under other stuff, is to put an LED in series with the B+ of 270VDC and the plate resistor which takes a second or two to come on and helps to alleviate cathde stripping while the filaments warm up, could even use a few and switch them out once we're up to electron cloud full dispersion.

I really like the copper corner protectors.
+1

Bryan, you might like my blog about all this stuff, if you didn't know already.
http://artyone.blogtown.co.nz/ (http://artyone.blogtown.co.nz/)

Wow, Sean, really cool. Do you build amps and reverbs for others? I might have to have something of yours sometime...

I would build things for others, if they were willing to pay lots. Well not even lots but enough though so far no ones been interested...here in New Zealand anyways. I've got in the back of my mind some high end fx with super basic circuits to sell on E-Bay but as yet I'm still busy keepin' busy.

And this is how you build a grill for your amps speaker.

No1: Find a big old aluminiumpot thats bottom has gone and dished in or out and copy on a pattern from an old wooden grill that you never got around to finishing.
(http://i4.photobucket.com/albums/y115/quickkiwi/blogtown/grill01.jpg)
Then spend an hour or two cutting it out with a jigsaw...having to stop every so often to use a sharp blade to get off the aluminium dross thats ended up sticking to the jigsaw blade. You'll know theres dross involved because the jigsaw strts jumpin'.
(http://i4.photobucket.com/albums/y115/quickkiwi/blogtown/grill02.jpg)
Then cut it away from the pot and see if it fits.
(http://i4.photobucket.com/albums/y115/quickkiwi/blogtown/grill03.jpg)
Then it's just a matter of a few hours hammering it from the back to stretch the metal and have the thing dish out nicely and then filing it all clean. Next step is attaching a few lugs so it'll be able to be screwed to the amp front. This too is time consuming because one uses bronze brazing rods as rivets which need to be cut to size then drilled out and hand hammered with ball pein hammers to be tight and long lasting.

So there you go Taylor, 6 hours later, I've made a grill for the amp and at 35 - 40 bucks an hour its about 200 bucks just for a grill. Thats most probably why people haven't offered to buy my stuff and I haven't offered it for sale. It'd cost too damn much! I wouldn't buy it.

 Hi!

Great stuff here!! :o

I have finally forced me to do this:

(http://thmq.mysteria.cz/stratCu/thumb.jpg)

:)

Unfortunately I had to leave output jack cavity unshielded, whole job took more time then expected and we had gig that evening, so I had to stop at this state and put it together quickly to be able to have guitar and myself ready on time ::)

Cheers, T.

I've got a performance coming up and I'll be working with a woman and so I'm building her an instrument to play. The performance will be called "Stilled life with intercontinental remote controlled mail dirigables". It's kind of based on a running joke between us about getting an SK1 casio out of storage in Germany and sent to New Zealand while also being about lives left behind and making new ones accross the world.

So she has this thing which will feature Ricks wind machine mixed with microphones then into a set of strings with a sustainer and picked up with pickups then mixed again with the mic/wind machine and sent into speakers next to a sheet, plate reverb, picked up by piezo's on the sheet and mixed again with mic/wind/ sustained strings... and then out.
(http://i4.photobucket.com/albums/y115/quickkiwi/blogtown/windmachine.jpg)
This is the side facing the player so the string tuning and the strings themselves will be accessible and the control box with lots of knobs will be just above the string winders. The wooden cross piece above the speaker back, for the reverb, is actually the sustainer cover which is two 16 ohm windings around 8 mild steel poles with neodenium magnets attached to the bottoms.
(http://i4.photobucket.com/albums/y115/quickkiwi/blogtown/mics.jpg)
These are the microphones that'll be attached behind the head. One, on the left, is something called a planar ribbon and goes into a small 8 ohm/1k transformer which given the ribbon is 200 ohms would work out to 200/10k, at a bad guess, but it doesn't matter because it works. The right hand mic is an old telephone mic I think and I'm not sure what it is but it gives quite a nice strong output even without DC and does the high pass kinda staticky thing quite well.
(http://i4.photobucket.com/albums/y115/quickkiwi/blogtown/karensballon.jpg)
This is the original mockup of the front, facing audience, and the big ol' barbacue dish has another speaker in it, above the reverb plate, which'll be out of phase with the speaker behind the reverb, well in phase signal wise, but out of phase because its facing the back towards the other speakers front and will provide a little output apart from the line out to another amp.

She's gonna freak out when she sees it :icon_lol:

More awesome stuff Sean! Would love to hear it. Any chance this performance could be videotaped and put on Youtube or something?

That would be nice wouldn't it? I don't know yet if the performance is even slatted to happen... but if it does then the woman is a video lecturer so the chances are quite high that that could indeed happen. I asked the chaps wh run the show to get me some contact with her but as yet nothings happened so it may be that they are busy and won't let me know till the last minute... and still expect a show or that they don't intend to put it in and aren't bothering to tell me.

They kinda want me to get better at my chops with specific instruments but I tend to keep showing up with new instruments that I haven't usually even tried out and then have lots of fun working out what they'll do in front of a live audience. Thats heaps of fun for me but I think the curators are a little peeved at me for carrying on in this way... then this one time when they want a performance and I do everything by the book, they ignore me which means I'll obviously revert back to normal... and make things up on the spot.

It's a little bit politial I think and though I end up playing heaps, with lots of different people, the powers that be don't quite know how to measure me up and allocate a place for me... in the natural scheme of things. So I've got to basically play it as it hits me and I think it'll still be a little while before they give me the space I need to properly make use of my gizmos.

I know it sounds silly but to have one of my pieces videotaped would be a bit out of line as the videotaping tends to happen only with the old time stars and overseas visitors.. the youngbloods have to wait there turn!

But we'll see.

(http://213.129.73.14/aa_dt_new/forums/attatchments/out_of_the_b0x.jpg)

x0xb0x: This thing is alive and kickin' !!!

Quote from: sean k on January 05, 2010, 01:36:19 AM
I would build things for others, if they were willing to pay lots. Well not even lots but enough though so far no ones been interested...here in New Zealand anyways. I've got in the back of my mind some high end fx with super basic circuits to sell on E-Bay but as yet I'm still busy keepin' busy.

And this is how you build a grill for your amps speaker.

No1: Find a big old aluminiumpot thats bottom has gone and dished in or out and copy on a pattern from an old wooden grill that you never got around to finishing.
(http://i4.photobucket.com/albums/y115/quickkiwi/blogtown/grill01.jpg)
Then spend an hour or two cutting it out with a jigsaw...having to stop every so often to use a sharp blade to get off the aluminium dross thats ended up sticking to the jigsaw blade. You'll know theres dross involved because the jigsaw strts jumpin'.
(http://i4.photobucket.com/albums/y115/quickkiwi/blogtown/grill02.jpg)
Then cut it away from the pot and see if it fits.
(http://i4.photobucket.com/albums/y115/quickkiwi/blogtown/grill03.jpg)
Then it's just a matter of a few hours hammering it from the back to stretch the metal and have the thing dish out nicely and then filing it all clean. Next step is attaching a few lugs so it'll be able to be screwed to the amp front. This too is time consuming because one uses bronze brazing rods as rivets which need to be cut to size then drilled out and hand hammered with ball pein hammers to be tight and long lasting.

So there you go Taylor, 6 hours later, I've made a grill for the amp and at 35 - 40 bucks an hour its about 200 bucks just for a grill. Thats most probably why people haven't offered to buy my stuff and I haven't offered it for sale. It'd cost too damn much! I wouldn't buy it.

WoW man, that cover would go great on top of this....
Its a wooden thing I got, its got a 12 inch opening, I thought of maybe using it as a funky cabinet....
(http://i150.photobucket.com/albums/s114/momoo_bucket/P1050123.jpg)
(http://i150.photobucket.com/albums/s114/momoo_bucket/P1050124.jpg)

That's a foundry pattern, used for sand casting (http://en.wikipedia.org/wiki/Sand_casting). My dad was a pattern maker.

-- T. G. --

New noise making device.  Has 2 oscillators one 4049 cmos distortion and one 4040 divider. click on images for larger view

(http://i520.photobucket.com/albums/w327/WhatIsEngineering/th_Photoon2010-05-05at0111.jpg) (http://s520.photobucket.com/albums/w327/WhatIsEngineering/?action=view&current=Photoon2010-05-05at0111.jpg)

(http://i520.photobucket.com/albums/w327/WhatIsEngineering/th_Photoon2010-05-01at0141.jpg) (http://s520.photobucket.com/albums/w327/WhatIsEngineering/?action=view&current=Photoon2010-05-01at0141.jpg)

(http://i520.photobucket.com/albums/w327/WhatIsEngineering/th_Photoon2010-05-01at01402.jpg) (http://s520.photobucket.com/albums/w327/WhatIsEngineering/?action=view&current=Photoon2010-05-01at01402.jpg)

Why polarity protection is a good idea....... or what the inside of a tantalum cap looks like  :icon_mad:

(http://i543.photobucket.com/albums/gg464/StereoKills_EA/BlownTantCap.jpg)

Quote from: StereoKills on May 13, 2010, 10:40:52 AM
Why polarity protection is a good idea....... or what the inside of a tantalum cap looks like  :icon_mad:

(http://i543.photobucket.com/albums/gg464/StereoKills_EA/BlownTantCap.jpg)

There are reasons why tantalum caps are expressly denounced as power supply filters.  :icon_neutral:

What board is that?

A small expansion board to drive a resistance based heater on a medical device we are developing. This little accident happened at work and released quite a bit of smoke!

(http://i381.photobucket.com/albums/oo252/mikemaddux/Completed%20Bulids/LDRControlledMonophonicSynth.jpg)

Can't remember if i've posted this before........finished it as my first music related electronics project....the best way to describe it is a circuit bent signal generator kit.

It works like a dual LDR controlled patchable monophonic synth - patch cables are 1/8" cables that give you different tones/pitches/sounds and switches from sine/triangle/square wave

I'll try to post a demo video of it soon on my youtube channel - http://www.youtube.com/user/goodfreshie (http://www.youtube.com/user/goodfreshie)

pickguard, and body refinish

(http://farm5.static.flickr.com/4019/4686449682_1c1018bbc0_b.jpg)

here's how it looked like before:

(http://farm5.static.flickr.com/4032/4438932809_e89fce6659.jpg)

the pickguard was toughest. completelly DIY. traced the existing pickguard's outline with my camera + lots of perspective correction in Photoshop. applied graphic and printed it to two sheets. applied a bunch of clear spray to "waterproof" it somewhat, so that the epoxy resin wouldn't darken the paper too much as it fused with it. oozed the epoxy into a kind of mold (took three tries and $40 worth of epoxy), let it harden, and finally cut it with scissors and a dremel saw.

(http://farm5.static.flickr.com/4021/4685818123_9f8467a77a.jpg)

I like it!! But you know I like your style... ;)

Ah Tape that is great, so good!

note to those who may be confused. I dislike the look of new-ness and shinyness, and I LOVE the used grainy rusty beat up look!  ;)
I bought that cheap guitar with the direct intent of beating and sanding it to hell

The pickguard graphic is cool. It reminded me of those subatomic particle images! Was that your inspiration?

(http://nathan-hall.net/Collages/full/A_subatomic_particle_2_lg.jpg)

that's exactly it! I love listening/reading/watching about particle/theoretical physics, even though I'm a complete amateur about it.

Well, as a physicist I have to say I think it's fantastic. :)

Quote from: cloudscapes on June 09, 2010, 06:21:10 PM
that's exactly it! I love listening/reading/watching about particle/theoretical physics, even though I'm a complete amateur about it.

How did you refinish guitar like that it looks awesome!!!

Hi,

These are some DIY tube amplifiers :

(http://i872.photobucket.com/albums/ab282/kupfer_m/Tube%20etc/300b3.jpg)

(http://i872.photobucket.com/albums/ab282/kupfer_m/Tube%20etc/pre2.jpg)

(http://i872.photobucket.com/albums/ab282/kupfer_m/Tube%20etc/807.jpg)

OMG  :icon_eek:

Quote from: kupfer_m on August 10, 2010, 02:17:48 PM
Hi,

These are some DIY tube amplifiers :

(http://i872.photobucket.com/albums/ab282/kupfer_m/Tube%20etc/300b3.jpg)

(http://i872.photobucket.com/albums/ab282/kupfer_m/Tube%20etc/pre2.jpg)

(http://i872.photobucket.com/albums/ab282/kupfer_m/Tube%20etc/807.jpg)

Oh my.......that is sexy.... :o

(http://farm2.static.flickr.com/1244/5130543787_11dd83a255.jpg) (http://www.flickr.com/photos/40439237@N05/5130543787/)

(http://farm2.static.flickr.com/1410/5131145728_c9aba515e1.jpg) (http://www.flickr.com/photos/40439237@N05/5131145728/)

(http://farm2.static.flickr.com/1438/5131145838_f10e395a7b.jpg) (http://www.flickr.com/photos/40439237@N05/5131145838/)

(http://farm2.static.flickr.com/1395/5130544995_e635335f0e.jpg) (http://www.flickr.com/photos/40439237@N05/5130544995/)

(http://farm5.static.flickr.com/4021/5130543391_6c4c7d5d24.jpg) (http://www.flickr.com/photos/40439237@N05/5130543391/)

I'll add another amp project, my "Noisy Cricket in a Box".

Still got the labeling to do and some sort of finish, probably'll just add a clearcoat after labels.

(http://i832.photobucket.com/albums/zz249/Perrow_MLP/Noisy%20Cricket%20in%20a%20box/Framsida.jpg)

(http://i832.photobucket.com/albums/zz249/Perrow_MLP/Noisy%20Cricket%20in%20a%20box/Baksida.jpg)

Quote from: Perrow on October 31, 2010, 11:01:04 AM
I'll add another amp project, my "Noisy Cricket in a Box".

Still got the labeling to do and some sort of finish, probably'll just add a clearcoat after labels.

(http://i832.photobucket.com/albums/zz249/Perrow_MLP/Noisy%20Cricket%20in%20a%20box/Framsida.jpg)

(http://i832.photobucket.com/albums/zz249/Perrow_MLP/Noisy%20Cricket%20in%20a%20box/Baksida.jpg)

I love it! Very well done. Perhaps some sort of circular speaker grill would look nice & help with protection?

Nice pics and builds!

(http://farm2.static.flickr.com/1438/5131145838_f10e395a7b.jpg)

I forgot to specify that my photos are of my HP 132A Dual Beam oscilloscope and of an old capacitor tester

I could see that some of them were not "builds" but some looked like
they could be vintage/modern. None the less, nice pics.

Scrap wood, $5 worth of hardware, a few hours of time...
(http://i573.photobucket.com/albums/ss171/jonnyeye/micstands1.jpg)
(http://i573.photobucket.com/albums/ss171/jonnyeye/micstands2.jpg)

(and I made my own piano?)

Quote from: JKowalski on October 31, 2010, 01:17:46 PM
I love it! Very well done. Perhaps some sort of circular speaker grill would look nice & help with protection?

Yeah, I've been looking for a proper sized fan grill (ie. from computer fans) but my input and output jacks are less than perfectly placed for them to work  :(

Still looking though.

Quote from: madstringbean on December 01, 2009, 09:49:46 PM
These are two little no-chip sinewave phototheremins I have built.  I call them Space Saucers!

(http://www.moonpieinthesky.com/buildsandbends/wp-content/uploads/2009/11/paintedspacesaucers1.jpg)

They are really small, only 3x3 inches square.  The plastic bubble on top is from one of those coin-operated gumball/prize machines at the grocery store!

hahaaaaha soooooo cute!!!but what is their use?? :icon_biggrin:

The first finished modules of my diy-modular synth:

(http://i872.photobucket.com/albums/ab282/kupfer_m/MOdular/mod2_96.jpg)

ohhhh this is so impressive!i see an input...is this a synth for musical instruments too? ;D

Hi All,

Some of my DIY (design & construction) and restored audio tube amplifiers :

OTL (Output Transformer Less) 20Wrms  :

(http://img11.hostingpics.net/pics/445470OTL6080_1.jpg)
(http://img11.hostingpics.net/pics/832795IMG_0009.jpg)
(http://img11.hostingpics.net/pics/444915otl6080v6_int_view.jpg)

Compact Ultra-Linear 10W rms :

(http://img10.hostingpics.net/pics/287780IMG_1990.jpg)
(http://img10.hostingpics.net/pics/3031566L6POLARFIX1.jpg)
(http://img10.hostingpics.net/pics/1786876L6POLARFIX2.jpg)

Hi-Power Ultra-Linear (from "dying" M&A base) 2x70Wrms :

(http://img4.hostingpics.net/pics/975585TVA11906042.jpg)

(http://img4.hostingpics.net/pics/195692INTTVA1CUSTOM2.jpg)

LEAK Stereo 60 and TL25+ (were basically "dead") :

(http://img4.hostingpics.net/pics/777800IMG0452.jpg)

(http://img4.hostingpics.net/pics/648568IMG0457.jpg)

SCOTT 222C BELL 2420 (from average to good original condition, but electronically out of duty) :

(http://img4.hostingpics.net/pics/348155IMG0651.jpg)

A+!

Amazing!

@bruno....i really love those top ones....sweet looking...

brilliant work... :icon_cool:

Thanks !

The 1st ones are from 1993, each unit weights 25Kg. I would be unable now to find the required means and time to do that work... So it's from a forgotten era, I'm afraid. It's the same for my guitar amp projects, as displayed somewhere on the forum.

A+!

Quote from: tasos on March 16, 2011, 05:22:28 PM
ohhhh this is so impressive!i see an input...is this a synth for musical instruments too? ;D

Basically it's a synth but yes you can use it to process (or destroy  :icon_mrgreen:) instrument sounds.

QuoteSome of my DIY (design & construction) and restored audio tube amplifiers :
(http://img10.hostingpics.net/pics/287780IMG_1990.jpg)

These are really beautiful!!!!

Thanks kupfer_m !

A+!

Electric zither, inspired by the sound you get when strumming behind the nut.  For noise/drone/experimentation, whole lot of fun.  It can play up to six different tones...

(http://a2.l3-images.myspacecdn.com/images02/119/96e0cb546df04deba1d908ce86bf29ae/l.jpg)

The tuning machines are from elderly instruments.  Pins are 5mm in diam, drilled to 4.7 for a nice tight fit.  Have it set up for 12 string but only using six currently.  Of course you have to buy a tuning wrench as well....

Only 6!? Use a SLIDE on that baby!

I love it!  :icon_biggrin:

Hi Mac,

As nice as funny instrument, indeed !

A+!

Re-amp (box) passive as well as active out put standard tube boost no treble control just drive and master volume on both passive and active.
(http://farm6.static.flickr.com/5105/5584315880_e81ed025f2.jpg) (http://www.flickr.com/photos/40439237@N05/5584315880/)DSCN4469 (http://www.flickr.com/photos/40439237@N05/5584315880/) by asobernewt (http://www.flickr.com/people/40439237@N05/), on Flickr
(http://farm6.static.flickr.com/5068/5583726495_28638d82d6.jpg) (http://www.flickr.com/photos/40439237@N05/5583726495/)DSCN4467 (http://www.flickr.com/photos/40439237@N05/5583726495/) by asobernewt (http://www.flickr.com/people/40439237@N05/), on Flickr

VERY OT pictures...I got hold of a Gamecube those days, now it's very cheap to get both the console and the original games!
Actually just a few games are worth, Resident Evil is my all time fav, and I have been a huge Call of Duty player on PC, as Medal of Honor. Also the PS Metal Gear Solid was a good one. All of them have some Gamecube rendition. I guess those are the ones I will be buying in the next weeks...

Back to the console, I didn't want to leave it untouched, and I saw someone modded it easily...So that's what I did...
* Clear window on the top
* LED behind the fan
* Front and rear panel painted in black. violet and black seemed to be the only colors, so the front grey panel was outta place...

Next in line...Add some alluminium foil behind the fan, to spread the LED fan light better. Add LEDs in the front panel, right behind the controllers number indents (o.oo.ooo.oooo). Change the main LED to match the others.

(http://www.swingandsoda.altervista.org/pedals/index.php?cmd=image&sfpg=R2FtZWN1YmUgTW9kcy8qMTcuMDYtMTUuanBnKmNhYTQyMTJiMzlkZGExYjY4NjYyZjFlYjcyMTFhMjU2)
(http://www.swingandsoda.altervista.org/pedals/index.php?cmd=image&sfpg=R2FtZWN1YmUgTW9kcy8qMTcuMDYtMjEuanBnKjllYWZiNTUwMjRhYmI0YTVkNjYxZjAyNTRmNTgzNDJj)
(http://www.swingandsoda.altervista.org/pedals/index.php?cmd=image&sfpg=R2FtZWN1YmUgTW9kcy8qMTcuMDYtMjYuanBnKjU5NWI5Y2YyZGM3MDVlMGUwMTZlYzg1OWFmNzRhMzk4)

Quote from: Renegadrian on June 17, 2011, 07:58:15 PM
Actually just a few games are worth, Resident Evil is my all time fav, and I have been a huge Call of Duty player on PC, as Medal of Honor. Also the PS Metal Gear Solid was a good one. All of them have some Gamecube rendition. I guess those are the ones I will be buying in the next weeks...

Definitely try Metroid Prime (and then sequel Metroid Prime: Echoes), I mean it, this and the first Mafia on PC were two best video games I played ever! :) T.

thx for the suggestion! now most of those original games can be bought for cheap thru ebay, I guess I can try that!

Philips Bakelite radio from 1937. Re-cap job and replaced all the wiring, as the insulation fell apart by looking at it. Other than that it was mostly cleaning. Oh and an open coil on the output transformer.

^ i love those old bakelite radios...i was looking at one of them to gut and make a nice little amp out of....great!. :icon_cool:

oh yeah 'HELLO'.... :icon_mrgreen:

My modular synth efforts so far...

(http://i872.photobucket.com/albums/ab282/kupfer_m/MOdular/MOD072011-PB.jpg)

Wow.

Where do you plug the keyboard in? ;)

Quote from: Hides-His-Eyes on July 17, 2011, 07:35:53 AM
Where do you plug the keyboard in? ;)

MIDI to CV module is on its way!

@kupfer:...  :icon_eek: amazing work!... :icon_cool:

Quote from: deadastronaut on July 17, 2011, 11:05:32 AM
@kupfer:...  :icon_eek: amazing work!... :icon_cool:

For sure, kupfer_m ! here's a big and neat job +++ ...

This remind me the Moog modular synthi walls of Tangerine Dream, Isao Tomita, Klaus Schulze, Robert Schröder, Neuronium, J-M Jarre...

A+!

 My yesterday's "build" :)

(http://thmq.mysteria.cz/pic/DSCN0378_2011-07-17_babovka.jpg)

T.

mmmmm..cool build!......looks nice!...ive got to have a cup 'o' tea and a biscuit now!...you made me hungry!... ;)

Quote from: deadastronaut on July 18, 2011, 05:40:22 AM
mmmmm..cool build!......looks nice!...ive got to have a cup 'o' tea and a biscuit now!...you made me hungry!... ;)

;D

Finally I have both a build, and a camera. Add 'em up, and you get photos.
(http://img855.imageshack.us/img855/9731/2x10wampfront.th.jpg) (http://imageshack.us/photo/my-images/855/2x10wampfront.jpg/)(http://img845.imageshack.us/img845/7170/2x10wampback.th.jpg) (http://imageshack.us/photo/my-images/845/2x10wampback.jpg/)
This is the 2x10W amp my wife and I use - for monitoring when recording, for listening to stuff, and it would also prolly work fine on a 12V motorbike battery and make a good, if p'raps overpowered, portable amp - if I ever coerce her into going out busking. But hey, those days are gone now, I've got a day job.

It has a TDA2005 inside, as well as lots of bass, which sounds incredibly muddy on my speakers. I suspect that this was a deliberate decision by the kit manufacturer (http://www.hobbykit.eu/), in order to impress lamers with the sheer amount of bass this amp has. I wonder if reducing the input caps, or at least replacing them with some WIMA non-polars (I think it's got cheap 1uf electrolytics in there atm) would help any. It also has two switchable stereo inputs, and took me a good seven hours to put it in that enclosure, too. It does look pretty neat, though, even if it leaves something to be desired in terms of sound, and does a good job for what it's worth. All in all, it's so OK that even my wife praised it ;D

Quote from: Thomeeque on July 18, 2011, 05:24:41 AM
My yesterday's "build" :)

(http://thmq.mysteria.cz/pic/DSCN0378_2011-07-17_babovka.jpg)

T.

Sung to the batman theme song nanananana bundt-pan!

Quote from: kupfer_m on July 17, 2011, 02:54:37 AM
My modular synth efforts so far...

(http://i872.photobucket.com/albums/ab282/kupfer_m/MOdular/MOD072011-PB.jpg)

Awesome work, are those Doepfer panels?

Quote from: Thomeeque on July 18, 2011, 05:24:41 AM
My yesterday's "build" :)

(http://thmq.mysteria.cz/pic/DSCN0378_2011-07-17_babovka.jpg)

T.

I most definitely DO NOT want to see any gut shots from this build.

Quote from: Mac Walker on July 19, 2011, 06:52:47 PM
Awesome work, are those Doepfer panels?

No, these are just blank aluminium panels cut to size by a local metal shop.

I wanna build one of these clocks, just to freak a few ppl out with, read teh write up on it on the link below

http://hackedgadgets.com/2011/09/12/bomb-clock/ (http://hackedgadgets.com/2011/09/12/bomb-clock/)



(http://hackedgadgets.com/wp-content/uploads/2011/09/bomb-clock.jpg)

I may have posted this somewhere here before, but I can't remember for certain. It's an applause-o-meter I built for a friend who holds a massive Harley rally in Southern Illinois twice a year:

Quote from: MRX2099 on October 17, 2011, 05:40:34 PM
I wanna build one of these clocks, just to freak a few ppl out with, read teh write up on it on the link below

http://hackedgadgets.com/2011/09/12/bomb-clock/ (http://hackedgadgets.com/2011/09/12/bomb-clock/)



(http://hackedgadgets.com/wp-content/uploads/2011/09/bomb-clock.jpg)

Do you have the schematic for that?

Quote from: JacktheRiffer on October 18, 2011, 12:13:58 AM

Quote from: MRX2099 on October 17, 2011, 05:40:34 PM
I wanna build one of these clocks, just to freak a few ppl out with, read teh write up on it on the link below

http://hackedgadgets.com/2011/09/12/bomb-clock/ (http://hackedgadgets.com/2011/09/12/bomb-clock/)



(http://hackedgadgets.com/wp-content/uploads/2011/09/bomb-clock.jpg)

Do you have the schematic for that?

That looks like a development board.

i could see my self getting in 'big' trouble with that^... :icon_mrgreen:..cool though.

Quote from: JacktheRiffer on October 18, 2011, 12:13:58 AM

Quote from: MRX2099 on October 17, 2011, 05:40:34 PM
I wanna build one of these clocks, just to freak a few ppl out with, read teh write up on it on the link below

http://hackedgadgets.com/2011/09/12/bomb-clock/ (http://hackedgadgets.com/2011/09/12/bomb-clock/)



(http://hackedgadgets.com/wp-content/uploads/2011/09/bomb-clock.jpg)

Do you have the schematic for that?

check out the page in the link hackedgadgets they have tons of neat cool hacked stuff, also a few other cool sites are hackaday and hacknmod, lots of stuff for us electronic nerds errrr!!!!!!!!!!! I mean genuises

Op Amp based Re-amp/Balanced to Unbalanced to Balanced again box-a-ma-gigger with response curve.
(https://lh5.googleusercontent.com/-20QrDWeR6GY/TqPhEyTyQwI/AAAAAAAAAOs/kLFQ4S3rDk4/s400/Photo%252520on%2525202011-10-23%252520at%25252002.34.jpg)
(https://lh5.googleusercontent.com/-6tvyF44y3v0/TqPhEuRjqsI/AAAAAAAAAOk/Zj0YBWVh27k/s400/Screen%252520shot%2525202011-10-23%252520at%2525202.28.32%252520AM.png)

(http://1.asset.soup.io/asset/2534/0289_2cfa.jpeg)

Quote from: Thomeeque on November 14, 2011, 04:43:00 AM
(http://1.asset.soup.io/asset/2534/0289_2cfa.jpeg)

amazing

 (http://thmq.mysteria.cz/diystompboxes.com/DSCN0059_C25_btry_defibrillator.jpg)

I'm trying to get very old and long time not used Simens C25 mobile phone to work, battery was so down that the phone did not "see it" and did not start standard charging when charger plugged in. This quick & dirty "defibrillator" put it back to life :)

T.

(http://farm8.staticflickr.com/7013/6496043445_1e88d972e9_z.jpg) (http://www.flickr.com/photos/40439237@N05/6496043445/)
(http://farm8.staticflickr.com/7175/6496043361_6140648720_z.jpg) (http://www.flickr.com/photos/40439237@N05/6496043361/)
Couldn't sleep this morning so I practiced my pcb layout skills done in Ki-CAD

Can anyone identify these parts?
Mitsumi brand.
Googling the codes yielded nothing.

They have screwdriver-adjust slots on the top, like a trim pot - but they don't look like any trim pot I know.
Also they have too many legs!

(http://img35.imageshack.us/img35/7872/img0465nb.jpg) (http://imageshack.us/photo/my-images/35/img0465nb.jpg/)

Pulled a whole batch of them out of discarded Realistic Modulaire stereo (I'm guessing it's from the 70s.)

Quote from: Cyeos on December 12, 2011, 12:41:37 AM
Can anyone identify these parts?
Mitsumi brand.
Googling the codes yielded nothing.

They have screwdriver-adjust slots on the top, like a trim pot - but they don't look like any trim pot I know.
Also they have too many legs!

(http://img35.imageshack.us/img35/7872/img0465nb.jpg) (http://imageshack.us/photo/my-images/35/img0465nb.jpg/)

Pulled a whole batch of them out of discarded Realistic Modulaire stereo (I'm guessing it's from the 70s.)

Variable capacitors

Quote from: Cyeos on December 12, 2011, 12:41:37 AM
Can anyone identify these parts?
Mitsumi brand.
Googling the codes yielded nothing.

They have screwdriver-adjust slots on the top, like a trim pot - but they don't look like any trim pot I know.
Also they have too many legs!

(http://img35.imageshack.us/img35/7872/img0465nb.jpg) (http://imageshack.us/photo/my-images/35/img0465nb.jpg/)

Pulled a whole batch of them out of discarded Realistic Modulaire stereo (I'm guessing it's from the 70s.)

These are variable inductors and intermediate frequency transformers, usually 455 or 460 KHz for AM and 10.7 MHz for FM.  If it is an old stereo, it may have FM multiplex coils for 19 KHz and 38 KHz and ther may be an SCA filter at 67 KHz.  The inductance is adjusted by screwing the ferrite core in and out.

Quote from: amptramp on December 12, 2011, 10:13:58 AM

Quote from: Cyeos on December 12, 2011, 12:41:37 AM
Can anyone identify these parts?
Mitsumi brand.
Googling the codes yielded nothing.

They have screwdriver-adjust slots on the top, like a trim pot - but they don't look like any trim pot I know.
Also they have too many legs!

(http://img35.imageshack.us/img35/7872/img0465nb.jpg) (http://imageshack.us/photo/my-images/35/img0465nb.jpg/)

Pulled a whole batch of them out of discarded Realistic Modulaire stereo (I'm guessing it's from the 70s.)

These are variable inductors and intermediate frequency transformers, usually 455 or 460 KHz for AM and 10.7 MHz for FM.  If it is an old stereo, it may have FM multiplex coils for 19 KHz and 38 KHz and ther may be an SCA filter at 67 KHz.  The inductance is adjusted by screwing the ferrite core in and out.

Oh yeah?  I guess that explains the "AM" written on them.
Very cool, thanks!

Sadly probably no use in any sort of guitar pedal or synth module project, though, huh?

Quote from: Cyeos on December 12, 2011, 08:46:27 PM
...

Sadly probably no use in any sort of guitar pedal or synth module project, though, huh?

You might always build new instruments for dogs or mice  :icon_mrgreen:

Adjustable inductors?  Maybe some mega weird wah?

I present to you my latest build, a four day collaboration between my girlfriend and me. 28 plates of Christmas cookies, ready to be wrapped, packed, and shipped to friends and family across the country. 11 varieties. 8+ lbs of butter/shortening.  10+ lbs of sugar. 15+ lbs of flour. Ridiculous quantities of labor.

(https://lh3.googleusercontent.com/-5YyjAZX5JDs/TudUOepaZnI/AAAAAAAAB8I/UX8AMbXdtTQ/s800/IMG_8237.JPG)

(https://lh5.googleusercontent.com/-yFdF4uZb5v8/TudUKVWw6-I/AAAAAAAAB70/qwWDemSdAxM/s288/IMG_8225.JPG) (https://lh5.googleusercontent.com/-8vqBP7vSASU/TudULCfRPBI/AAAAAAAAB74/igESP2TyB3E/s288/IMG_8226.JPG)

(https://lh4.googleusercontent.com/-Vi8rwt_jRMk/TudUM3-BVqI/AAAAAAAAB8A/U4skfivmYDQ/s288/IMG_8231.JPG) (https://lh5.googleusercontent.com/-DJW5kiG3IHk/TudUMJIRsEI/AAAAAAAAB78/HAB2Zn4Fp_I/s288/IMG_8230.JPG)

While it usually takes several years to get on our cookie list, I may have a plate available for the right trade.  :D

Merry Christmas, or whatever is the appropriate seasonal greeting for whatever holiday(s) you may or may not celebrate!

Mike

yum yum.... :)

Ow Yeah!!! Tasty!!! Yummie!!!

Shipped with ups? ;D

(http://dl.dropbox.com/u/967492/Xmas%20Lights.jpg)

Quote from: frequencycentral on December 21, 2011, 06:56:21 AM
(http://dl.dropbox.com/u/967492/Xmas%20Lights.jpg)

OK... I will ask...

How'd ya do it? and...

What tubes are they?  ;D

These are two DM160 indicator tubes http://www.r-type.org/pdfs/dm160.pdf They're the smallest tubes I've ever seen! I'm cascading them into each other for overdrive. I'm running them from a 120v SMPS. They flash in time with my strumming.   :icon_biggrin:  But they're microphonic as hell.  :icon_neutral:

@rick: they do look cool as hell though... :icon_cool:

Whatever you make with those, it must be called the Warp Core.  Obligatory.

@Rick

Microhonic, eh? I have always wanted to take advantage of something microphonic to make a real "stomp box"... something that, when engaged, does it's thing, plus picks up stage noise. Stomp your foot near it for a "Cush-Cush-Cush" over the top of whatever's being played. Tap the box with your foot for more of a "Tak-Tak-Tak" sound. Seems like a neat idea, to me, lol. I get hypersensitive on stage (I think from blocking out all the stares), and I've found myself paying attention to what the stage feels like, especially when I wear shoes with thinner soles.

Gawd, those look awesome!

(http://a3.sphotos.ak.fbcdn.net/hphotos-ak-snc7/374322_10150496471834078_745844077_8551393_499207982_n.jpg)
(http://a8.sphotos.ak.fbcdn.net/hphotos-ak-snc7/400432_10150496471944078_745844077_8551395_612510727_n.jpg)

(http://i.imgur.com/lM3BMl.jpg) (http://i.imgur.com/lM3BM.jpg)

(http://i.imgur.com/hD5GNl.jpg) (http://i.imgur.com/hD5GN.jpg)
Now all it needs is... well, frankly, the CPU that actually does anything.

Hi, guys. I finish my new simple custom looper
Here is a shot:
(http://i2.photobucket.com/albums/y23/Naudio/SmallStageLooper.jpg?t=1325936798)


Niki

Quote from: Nikolay on January 07, 2012, 06:47:38 AM
Hi, guys. I finish my new simple custom looper
Here is a shot:

Niki

Great!
So how do you make sure all the labeling is in place(not in axis)

@james: come on...give us a clue you teaser.. ;D

Quote from: deadastronaut on January 07, 2012, 11:19:53 AM
@james: come on...give us a clue you teaser.. ;D

Ha!   ;D

It's just a microcontroller board; a little 5532 preamp to the ADC, ATMega328P, two 8-bit PWM ports with a resistor divider to get a rough 16 bits, a 5532 buffer, a Chebyshef lowpass to filter the PWM to something audible, a 5532 post amp, then output!  One op amp is spare and might be used for buffering a CV or expression jack further down the road.  Other than that, a 4017 hooked up to a 7-segment display and two LEDs sinking current into one of the microcontroller pins and some buttons for input.  Just was a bit inconventient to need both an input and output buffer to use the Arduino.

 ;D you liost me on the first sentence....lol....i knew i shouldn't of asked.  ::)

Quote from: Earthscum on December 23, 2011, 09:13:56 PM... I've found myself paying attention to what the stage feels like, especially when I wear shoes with thinner soles.

i've noticed a few barefoot bassists, particularly in the jazz world.

(http://farm8.staticflickr.com/7169/6685495515_9d76a058dd.jpg) (http://www.flickr.com/photos/71062426@N08/6685495515/)

My first baked PCB, came out way better then I thought it was going to, rather proud of my self. Less than six months ago did not know how to do SMT and now look at me!

What are you making?

Quote from: tasos on January 12, 2012, 01:40:39 PM
What are you making?

Its a mic pre that AEA makes, the RPQ 500, I am there intern so I am learning about small run SMT prototyping.

This made me laugh...
_{(Don't really do this)}

(http://i.imgur.com/DlDp9.png)

Quote from: Earthscum on February 06, 2012, 11:57:16 PM
This made me laugh...
_{(Don't really do this)}

(http://i.imgur.com/DlDp9.png)

DO NOT DO THIS - the battery has all the chances to explode !!!

A+!

... And, oh, I was heavily into restoring vintage tube VTVMs these short and recent times :

(http://img11.hostingpics.net/pics/542246IMG9551.jpg)
(http://img11.hostingpics.net/pics/157487IMG9527.jpg)

OK - Big contrast : that's not SS, SMD nor microcontroller device, but somewhere musical-maintenance-tubes related...

A+!

I want to share this somewhere. I made a phono preamp and bipolar power supply. The rotary switch gives you three different gain settings (+30,+40,+50dB), I still need to find a knob somewhere.
This finally enables me to listen to all my dad's cheesy records  ;D

(http://img593.imageshack.us/img593/268/img0440ag.jpg)

And the turntable I'm using it with, a lovely 1970s Technics. Had to spray a little bit of contact cleaner into the speed adjustment potentiometers and it now spins without any trouble.

(http://img31.imageshack.us/img31/2392/img8299fc.jpg)

Hey could you tell us more about the phono preamp? ;D

Quote from: tasos on February 11, 2012, 06:49:35 PM
Hey could you tell us more about the phono preamp? ;D

No problem! :) I followed the schematic from dano's site http://beavishifi.com/articles/phono-preamps/ . The RJM Audio one to be specific, I used the 'more accurate' component values for RIAA eq curve in the feedback loop as listed on the original page (http://phonoclone.com/diy-pho5.html). No audiophile parts, an NE5532 opamp, just regular film caps all round (paralllel with a bipolar electrolytic on the output) and whatever resistors I got in the right values. Sounds fine, no clipping with the +-9V power supply (I probably could have done+-12V with the transformer putting out way more at so little load but I purchased 9v linear regulators so I'm stuck with that for now), very little noise from the preamp itself. If I dime everything you I get some some 50hz hum but I think thats coming from the actual turntable...and then theres the continous battle with dust and such on the actual records.

I have an eagle layout if anyone wants to try making it (I built it on perfboard but I used the program to get the basic layout done).

Hmmm thanks...
I am interested because i am making a bass head and when i connect my bass directly to the power amp it is very quiet(the power amp is 200watt)
However when i connect my bass in any of my mixers(i have two) and then to the power amp the sound from the speakers is LOUD!

Do you think a phono preamp would do the job?
My power amp is http://sites.google.com/site/quasisdiyaudiosite/nmos-series/nmos200-1 (http://sites.google.com/site/quasisdiyaudiosite/nmos-series/nmos200-1) to220 version...
Any help would be really appreciated

Quote from: tasos on February 12, 2012, 06:18:09 AM
Hmmm thanks...
I am interested because i am making a bass head and when i connect my bass directly to the power amp it is very quiet(the power amp is 200watt)
However when i connect my bass in any of my mixers(i have two) and then to the power amp the sound from the speakers is LOUD!

Do you think a phono preamp would do the job?
My power amp is http://sites.google.com/site/quasisdiyaudiosite/nmos-series/nmos200-1 (http://sites.google.com/site/quasisdiyaudiosite/nmos-series/nmos200-1) to220 version...
Any help would be really appreciated

The phono preamp's purpose is other than boosting the millivolt signal from the record player is to apply a special EQ curve (records are manufactured with a treble boost which is then removed when you play them and in doing so, you avoid high frequency noise http://en.wikipedia.org/wiki/RIAA_EQ). So...it's a one trick pony for this specific purpose (hooking up the turntable to the computer to digitize some records).

But a simple opamp gain stage would work fine for what you need to do (go find the schematic for the MXR Microamp or just read up on operational amplifiers :) ) ...there are a couple of designs for dedicated bass preamps out there too (with extra tone controls and such).

Tasos, check out some JFET bass preams, e.g. Albert Kreuzer's.
http://www.albertkreuzer.com/preamp_onboard.htm

I have tried the microamp and i have also tried the albert kreuzer bass preamp...
Same problem  :icon_cry:

I went to build a phaser, and realized I only bought 4x 2n5952 way back when I ordered the parts.

I picked up 100 on Ebay from a US seller for a pretty good price. I also bought 50x J201, since my J201 bag from Newark actually contained BC550, and I didn't realize it until a year after I ordered them.

Guess what I'm doing today...?

(http://img210.imageshack.us/img210/199/fetmatch2.th.jpg) (http://imageshack.us/photo/my-images/210/fetmatch2.jpg/) (http://img85.imageshack.us/img85/7425/fetmatch1.th.jpg) (http://imageshack.us/photo/my-images/85/fetmatch1.jpg/)

Awesome ;D

Just finished a small valve amplifier:

(http://i872.photobucket.com/albums/ab282/kupfer_m/Tube%20etc/kanu1_96.jpg)

BEAUTYYYY !!

+1 , very cool amp... 8)

Great looking stereo amp! You know of course we need to see those interior shots.

Take care
dave

Quote from: davent on March 15, 2012, 01:42:04 PM
Great looking stereo amp! You know of course we need to see those interior shots.

Take care
dave

Here it is! Just have to make a decent 230V input.

(http://i872.photobucket.com/albums/ab282/kupfer_m/Tube%20etc/kanu3_96.jpg)

New synth module, a couple of three input mixers and a stereo "master" output stage. My normal ghetto, cram too many things into a panel, make it up as you go along styling.

(http://www.eskimo.plus.com/synthstuff/2012-03-18_17-08-32_760.jpg)

(http://www.eskimo.plus.com/synthstuff/2012-03-18_17-08-54_584.jpg)

And a matching dock/phono preamp for the amp I posted earlier:

(http://i872.photobucket.com/albums/ab282/kupfer_m/Tubes%20etc/dock_96.jpg)

(http://i872.photobucket.com/albums/ab282/kupfer_m/Tubes%20etc/KanuDock_96.jpg)

Some pics of R.G.'s quick and dirty test audio oscillator, its a wonderful miniature bit of test gear. Battery will last about 100 hours. I'm often lazy and won't get a real signal generator out of the cupboard to use it to test something, unless I really need to. But this little critter, it can just stay in the toolbox ready for instant use at any time. Love it. You don't really need a scope to trace the signal, a DMM set to AC volts will work, and also be useful for checking how much gain, or loss of gain, in a circuit.

http://dl.dropbox.com/u/61170900/sig%20gen%20pcb1.JPG
http://dl.dropbox.com/u/61170900/sig%20gen%20pcb2.JPG
http://dl.dropbox.com/u/61170900/sig%20gen%20guts1.JPG
http://dl.dropbox.com/u/61170900/sig%20gen%20box1.JPG

I ended up with 10 of these PCB's (filling in space on another order) so if anyone wants one its $2 plus shipping, send me a pm. ($2 buys me a beer and covers the walk to the post office).

Amazing jem.

(https://i.chzbgr.com/completestore/12/8/21/-IY6-KAhREWfeilUvnF5Cg2.jpg)

^^^Wow........Just wow   :icon_neutral:

^  thats grate!..

i'll get my coat.. ::)

Here be some random swirls i dun did.

(http://i1267.photobucket.com/albums/jj545/haveyouseenhim/1329865757760.jpg)
(http://i1267.photobucket.com/albums/jj545/haveyouseenhim/1330344153426.jpg)
(http://i1267.photobucket.com/albums/jj545/haveyouseenhim/1330918412287-1.jpg)
(http://i1267.photobucket.com/albums/jj545/haveyouseenhim/DSC06482.jpg)
(http://i1267.photobucket.com/albums/jj545/haveyouseenhim/1330866517599.jpg)
(http://i1267.photobucket.com/albums/jj545/haveyouseenhim/1329684520126.jpg)
(http://i1267.photobucket.com/albums/jj545/haveyouseenhim/DSC06478-1.jpg)
(http://i1267.photobucket.com/albums/jj545/haveyouseenhim/listpic.jpg)
(http://i1267.photobucket.com/albums/jj545/haveyouseenhim/listpic2.jpg)
(http://i1267.photobucket.com/albums/jj545/haveyouseenhim/DSC06141.jpg)
(http://i1267.photobucket.com/albums/jj545/haveyouseenhim/1330671862844.jpg)

[edit] I must add that i didn't do the 360 controller. It's from someone when I made a swirl tutorial on the diy board on 4chan.

That's just bananas  :icon_eek: :icon_mrgreen:

swirl addicted? looks awesome :D

(https://i.chzbgr.com/completestore/12/8/22/YwYVSDMRr0yfMxQznHiApw2.jpg)

Gets rid of that pesky guitar tuning problem.

Quote from: amptramp on August 28, 2012, 10:56:19 AM
Gets rid of that pesky guitar tuning problem.

Gives more body to your tone  ;D

you can't see the other half of the picture - he's actually playing ping pong with the bassist - and you should see his paddle - it's alembic.

(https://fbcdn-sphotos-e-a.akamaihd.net/hphotos-ak-ash4/312171_2456771780242_1754855551_n.jpg)
(https://fbcdn-sphotos-f-a.akamaihd.net/hphotos-ak-ash4/294549_2358178275466_5547193_n.jpg)
(https://fbcdn-sphotos-g-a.akamaihd.net/hphotos-ak-ash4/319239_2461043407030_806791768_n.jpg)
(https://fbcdn-sphotos-c-a.akamaihd.net/hphotos-ak-ash4/302620_2662419641310_425459734_n.jpg)
(https://fbcdn-sphotos-g-a.akamaihd.net/hphotos-ak-ash4/395359_3000677937556_176978980_n.jpg)
(https://fbcdn-sphotos-e-a.akamaihd.net/hphotos-ak-ash4/402751_3034832791406_281913725_n.jpg)
(https://fbcdn-sphotos-f-a.akamaihd.net/hphotos-ak-ash4/408050_3084668437266_170065664_n.jpg)
(https://fbcdn-sphotos-d-a.akamaihd.net/hphotos-ak-ash4/401224_3084671997355_1676775983_n.jpg)
(https://fbcdn-sphotos-h-a.akamaihd.net/hphotos-ak-snc7/397838_3117234451396_1385028914_n.jpg)
(https://fbcdn-sphotos-b-a.akamaihd.net/hphotos-ak-ash4/397887_3117234771404_656594390_n.jpg)
(https://fbcdn-sphotos-a-a.akamaihd.net/hphotos-ak-ash4/403776_3117233491372_1982308486_n.jpg)
(https://fbcdn-sphotos-e-a.akamaihd.net/hphotos-ak-ash4/406398_3117236611450_1204112155_n.jpg)
(https://fbcdn-sphotos-b-a.akamaihd.net/hphotos-ak-snc7/430715_3133652501837_491219943_n.jpg)
(https://fbcdn-sphotos-b-a.akamaihd.net/hphotos-ak-ash4/419494_3182005830640_20793870_n.jpg)
(https://fbcdn-sphotos-c-a.akamaihd.net/hphotos-ak-snc7/429844_3182005550633_651084913_n.jpg)
(https://fbcdn-sphotos-h-a.akamaihd.net/hphotos-ak-prn1/532543_3526353479116_218472603_n.jpg)
(https://fbcdn-sphotos-g-a.akamaihd.net/hphotos-ak-ash3/553976_3531043196356_1323147939_n.jpg)
(https://fbcdn-sphotos-h-a.akamaihd.net/hphotos-ak-ash4/423254_3526351839075_541492325_n.jpg)
(https://fbcdn-sphotos-h-a.akamaihd.net/hphotos-ak-ash4/399537_4263212180123_995221704_n.jpg)

Quote from: Perrow on August 28, 2012, 05:05:19 AM
(https://i.chzbgr.com/completestore/12/8/22/YwYVSDMRr0yfMxQznHiApw2.jpg)

Glenn Branca. i played in his 13th symphony 'Hallucination City'. great fun!

i redesigned and built the vertical fluorescents standing between the dancers and musicians. the original ones from 1998 were crap. :)
and i was the lighting operator.

http://www.youtube.com/watch?v=staEZ7FcGqE