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DIYstompboxes.com  |  DIY Stompboxes  |  Building your own stompbox  |  A fake guitar for your test bench 0 Members and 1 Guest are viewing this topic. « previous next »
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Author Topic: A fake guitar for your test bench  (Read 13154 times)
KazooMan
Posts: 301


Re: A fake guitar for your test bench
« Reply #20 on: June 27, 2010, 07:26:29 PM »

Thanks, Stringsthings.  I had started doing a layout while I was BBQ'ing some chicken.  The chicken won out (and was fabulous).  I returned and there was a layout waiting for me.

Thanks!  I will check out the layout versus the schematic and put it together.  I can put my shoes back on and quit strumming my guitar with my feet while I adjust pedals.
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R.G.
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Posts: 15600


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Re: A fake guitar for your test bench
« Reply #21 on: June 27, 2010, 07:34:50 PM »

and a short ( but exciting ) soundclip:
Just a question. I notice the the "notes" are all quite short. Was it possible to make the notes ring for longer times, but still die out?
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R.G.

It doesn't take a lot of technical chops to understand that such [cryogenic] treatment to a vacuum tube is probably similar to cryogenically treated stove elements.
Paul Marossy
Posts: 12527


Just Another Guitarhead


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Re: A fake guitar for your test bench
« Reply #22 on: June 28, 2010, 10:01:42 AM »

That looks pretty handy. I use my GEO "Down and Dirty" oscillator just to verify if something is functional when I get it done, usually when I am building a batch of pedals for one of my clients. But for stuff I build for myself, I always take the finished circuit for a test drive afterwards by playing my guitar thru it. I guess there are those times when you are tweaking stuff where the "guitar" mode might come in handy, though.

I agree with RG, it seems like the "notes" decay extremely quickly. They are very staccato...
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_/\_/\_PJM_/\_/\_

www.diyguitarist.com
www.soundcloud.com/Paul-Marossy

"Tone is in the fingers."
mattthegamer463
Posts: 398


Re: A fake guitar for your test bench
« Reply #23 on: June 28, 2010, 10:56:42 AM »

From that sound clip stringsthings posted, it sounds like knocking on a wooden block.  Is it any good for testing any pedals other than delay and reverb pedals?
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frequencycentral
Posts: 4881


Kicking the sh!t of of your speakers since 2008


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Re: A fake guitar for your test bench
« Reply #24 on: June 28, 2010, 11:10:27 AM »

Sounds exactly like the old Boss Dr Rhythm rimshot. I have to build it for that reason.  Cheesy
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Paul Marossy
Posts: 12527


Just Another Guitarhead


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Re: A fake guitar for your test bench
« Reply #25 on: June 28, 2010, 11:46:07 AM »

From that sound clip stringsthings posted, it sounds like knocking on a wooden block.  Is it any good for testing any pedals other than delay and reverb pedals?


Yeah, something with a more realistic decay (like a guitar string) would be more useful.
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_/\_/\_PJM_/\_/\_

www.diyguitarist.com
www.soundcloud.com/Paul-Marossy

"Tone is in the fingers."
R.G.
more
Posts: 15600


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Re: A fake guitar for your test bench
« Reply #26 on: June 28, 2010, 12:51:43 PM »

Let's see what we get back.

Sometimes it's tricky to set a ringing oscillator to ring just the right amount. I may have to add a fine tuning knob to get it to ring for up to about half a second. I did notice that mine is very fussy about the ringing time setting.
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R.G.

It doesn't take a lot of technical chops to understand that such [cryogenic] treatment to a vacuum tube is probably similar to cryogenically treated stove elements.
stringsthings
Posts: 362

David Y.


Re: A fake guitar for your test bench
« Reply #27 on: June 28, 2010, 03:08:56 PM »

I notice the the "notes" are all quite short. Was it possible to make the notes ring for longer times, but still die out?

http://soundclick.com/share?songid=9334230

details of soundclip:

1) turning the length control from maximum ( constant tone ) to about 1:00 ... to get the longer notes ...

2) notes into a software fuzz box

3) notes into a software phase shifter

4) notes into a hardware octave divider ( that is older than my cat  icon_mrgreen )

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Brymus
Posts: 1555


Bryan G. - Somewhere in the Mohave Desert USA


Re: A fake guitar for your test bench
« Reply #28 on: June 28, 2010, 05:05:52 PM »

Yeah, this could be quite handy,thank you.
I think I will put it in the same enclosure as my "quick and dirty" test tone generator.
Bryan
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I'm no EE or even a tech,just a monkey with a soldering iron that can read,and follow instructions. Grin
My now defunct band http://www.facebook.com/TheZedLeppelinExperience
R.G.
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Posts: 15600


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Re: A fake guitar for your test bench
« Reply #29 on: June 28, 2010, 06:12:41 PM »

1) turning the length control from maximum ( constant tone ) to about 1:00 ... to get the longer notes ...
Ah. That's better! I had something like that in mind, a ringing note, but which dies away in a reasonable time.

There is a slight buzz behind the note, even on the first section. Is that an artifact of the recording and playback mechanism, or does the thing actually have a slight buzz in the sound. The reason I ask is that mine didn't do that. I had a pretty much pure tone in all the decaying notes. I could turn up the gain so it would buzz, but mostly it was clean sounding.


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R.G.

It doesn't take a lot of technical chops to understand that such [cryogenic] treatment to a vacuum tube is probably similar to cryogenically treated stove elements.
Cliff Schecht
Posts: 1187



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Re: A fake guitar for your test bench
« Reply #30 on: June 28, 2010, 08:38:55 PM »

Looks a lot like my May 2010 submission if you ask me... Cheesy

http://www.diystompboxes.com/smfforum/index.php?topic=84323.msg711421#msg711421
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R.G.
more
Posts: 15600


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Re: A fake guitar for your test bench
« Reply #31 on: June 28, 2010, 09:03:35 PM »

Looks a lot like my May 2010 submission if you ask me... Cheesy
Hey, neat. I hadn't seen that one, but it's another good illustration of how flexible the Twin T can be.
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R.G.

It doesn't take a lot of technical chops to understand that such [cryogenic] treatment to a vacuum tube is probably similar to cryogenically treated stove elements.
stringsthings
Posts: 362

David Y.


Re: A fake guitar for your test bench
« Reply #32 on: June 29, 2010, 11:34:52 AM »


There is a slight buzz behind the note, even on the first section. Is that an artifact of the recording and playback mechanism, or does the thing actually have a slight buzz in the sound.....


my unit is sans volume control .... so the buzz is likely a product of taxing the recording software .... 
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R.G.
more
Posts: 15600


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Re: A fake guitar for your test bench
« Reply #33 on: June 29, 2010, 11:45:53 AM »

Ah - OK, that makes sense. In any new design, I'm always aware I could have made a mistake either in the circuit or the drawing.  icon_biggrin
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R.G.

It doesn't take a lot of technical chops to understand that such [cryogenic] treatment to a vacuum tube is probably similar to cryogenically treated stove elements.
Cliff Schecht
Posts: 1187



WWW
Re: A fake guitar for your test bench
« Reply #34 on: June 30, 2010, 05:40:57 PM »

Looks a lot like my May 2010 submission if you ask me... Cheesy
Hey, neat. I hadn't seen that one, but it's another good illustration of how flexible the Twin T can be.


Agreed! I use them quite often in both personal and professional designs. Simple, cheap and it works well.

Something I really want to start playing with is LC tonestacks in guitar amps. Seems like you could get a lot more range by using three pots in conjunction with LC networks. I haven't played with this at all and it's obviously not an original thought, but it seems like it hasn't been explored much (or at least not well documented). Hrmm..
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Steve Mavronis
Posts: 1339


Neo-Classic FX (non-commercial)


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Re: A fake guitar for your test bench
« Reply #35 on: June 30, 2010, 08:58:25 PM »

R.G. I have the perfect enclosure look for your fake guitar signal generator Wink

« Last Edit: June 30, 2010, 09:08:27 PM by Steve Mavronis » Logged

Guitar > Boss NS2 Noise Suppressor > NS2 Send > MXR Custom Comp > Neo-Classic 741 Overdrive > NS2 Return/Output > VHT Special 6 Ultra Combo Amp Input > Amp Send > MXR Carbon Copy Analog Delay > Boss RC3 Loop Station > Amp Return
R.G.
more
Posts: 15600


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Re: A fake guitar for your test bench
« Reply #36 on: June 30, 2010, 09:54:18 PM »

Um, well, duzzat come on Lake Placid Blue?

 icon_lol
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R.G.

It doesn't take a lot of technical chops to understand that such [cryogenic] treatment to a vacuum tube is probably similar to cryogenically treated stove elements.
Steve Mavronis
Posts: 1339


Neo-Classic FX (non-commercial)


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Re: A fake guitar for your test bench
« Reply #37 on: July 01, 2010, 06:13:29 AM »

Um, well, duzzat come on Lake Placid Blue?
 icon_lol

Actually you could do a Strat motif with one of your fabulous wooden enclosures and either paint it that color or add a pickguard with the chrome Strat jack too! It would be a Strat in a box!
  Cool

« Last Edit: July 01, 2010, 06:17:03 AM by Steve Mavronis » Logged

Guitar > Boss NS2 Noise Suppressor > NS2 Send > MXR Custom Comp > Neo-Classic 741 Overdrive > NS2 Return/Output > VHT Special 6 Ultra Combo Amp Input > Amp Send > MXR Carbon Copy Analog Delay > Boss RC3 Loop Station > Amp Return
earthtonesaudio
Posts: 3571


Alex


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Re: A fake guitar for your test bench
« Reply #38 on: July 02, 2010, 10:33:50 AM »

Better add a Muzique Pickup Simulator on the output, if you're gonna go that far.
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I gotta cut down on my (ab)use of parentheses.
Cap
Posts: 58

Riccardo C. - Italy


Re: A fake guitar for your test bench
« Reply #39 on: June 23, 2011, 04:15:30 AM »

A simple, hopefully not stupid question..is it possible to modify the circuit so the sound frequency is controlled with only one pot?
Thanks! Smiley
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