Bit more de-bugging today, I built "Dr Boogey" a while ago and only had
"flat out" distortion with some "Splatty" decay, I found a mis-wire around Q4
and also a "dead" 1M gain pot !
It's now sounding fantastic, I removed Q5 and the tone stack for now, its stock
up to Q4 then 27n cap with 15k/2n2 ground X2 network to 100k vol pot ( ROG sim style )
Very nice high gain tones with good gain range, mid boost and sparkle also.
I may add back a tone control at some point ...
Thanks to electriclabs for another nice amp sim :D
Marty.
That's one that I to build sometime. Got any soundclips? :icon_wink:
Nice. I haven't tried that one yet. Heck, I haven't had much time to build much lately. *sigh*
i recently was prodding inside mine, and discovered some green patches on my copper traces. the trimpot for Q3 also no longer works...
this disturbs me.
back to re-de-bugging. sigh.
Quote from: MartyMart on January 26, 2006, 03:20:03 PM
I removed Q5 and the tone stack for now, its stock
up to Q4 then 27n cap with 15k/2n2 ground X2 network to 100k vol pot ( ROG sim style )
does this mean something like this? :P :icon_biggrin: thanks!
Q4 Cp
|-----D---------||--- to 100K pot
| 27n
------>|G
|-----S-------+------+
| |
\ ----- Cg
Rg \ ----- 2n2
15K \ |
\ |
| |
V V
Or, like this?
Q4 Cp
|-----D---------||--------------- 100K pot
| 27n |<-----
------>|G |
|-----S-------+------+ V
| |
\ ----- Cg
Rg \ ----- 2n2
15K \ |
\ |
| |
V V
Peace!
Arn C.
No, Drain has 27n then 15k series then 2n2 to ground then 15k series then another 2n2 to ground then vol pot lug 3
Gate is input
Source has the 1k8 and 1uf to ground as the schem.. Q4
sorry, tried the "drawing" thing and it was too screwed up !!
Tone stack and Q5 omitted
MM.
Quote from: MartyMart on January 27, 2006, 12:56:54 PM
No, Drain has 27n then 15k series then 2n2 to ground then 15k series then another 2n2 to ground then vol pot lug 3
Gate is input
Source has the 1k8 and 1uf to ground as the schem.. Q4
sorry, tried the "drawing" thing and it was too screwed up !!
Tone stack and Q5 omitted
MM.
thanks marty! that was my other guess! :icon_wink: i just didn't have two ascii drawings in me. too bad we don't have a fixed width font option. ::) :icon_biggrin:
Quote from: MartyMart on January 26, 2006, 03:20:03 PM
Bit more de-bugging today, I built "Dr Boogey" a while ago and only had
"flat out" distortion with some "Splatty" decay, I found a mis-wire around Q4
and also a "dead" 1M gain pot !
It's now sounding fantastic, I removed Q5 and the tone stack for now, its stock
up to Q4 then 27n cap with 15k/2n2 ground X2 network to 100k vol pot ( ROG sim style )
Very nice high gain tones with good gain range, mid boost and sparkle also.
I may add back a tone control at some point ...
Thanks to electriclabs for another nice amp sim :D
Marty.
Thanks for the kind words Marty
glad you like it...
well i like the way you altered the circuit
imo these sims are built like preamps more than dist pedals...if someone would want them as dist pedals he should probably do a mod like you did
well i have built some other emus. In most of them i prefer a fixed eq or much better a-one tone pot (bm type with different values)
just a hint if you remove eq and pres and add the tone circuit from brown sound in a box2 and dual lowpass then you get a GREAT SOUND
i'm on the road--so the best i can do is be a "virtual" fx builder. :icon_confused: so i "built" dr. boogey. because folks leave out tone stacks, like marty did, or switch them, like electrictabs did, i experimented with keeping most of the tone stack off board. my thought was that this would make mods easier.
fwiw here are my layouts. they aren't verified but i am pretty confident they are right. i did them in eagle and that means i just have to get the schem right. so if anyone wants to work from these, i am posting my schems, too. the idea in the version without the tone stack is to the "fly" the parts in the way you might mod your guitar or commerical amp.
dr. boogey schem (http://home.comcast.net/~gaussmarkov/gm_DrBoogeySchem.png)
dr. boogey layout (http://home.comcast.net/~gaussmarkov/gm_DrBoogeyLayout.png)
dr. boogey minus tone stack schem (http://home.comcast.net/~gaussmarkov/gm_DrBoogeySchemNT.png)
dr. boogey minus tone stack layout (http://home.comcast.net/~gaussmarkov/gm_DrBoogeyLayoutNT.png)
electrictabs: thanks for the circuit! i hope i can have your blessing on posting this stuff. if not, let me know and i'll unpost. i'm looking forward to a real build. :icon_biggrin:
Connoisseur of Distortion: i hope you get that thing working. you deserve it! thanks for your reports.
martymart: thanks again for clarifying. i used your approach to removing the tone stack.
if anyone does find a mistake or verifies a layout, please let me know and i will make appropriate changes.
Yeah, that Dr Boogey is the best DIY distortion pedal yet. It has the goods, and you cant ask for more than that.
i know this is very long time hahaha! but can you please re upload the layout of tone stackless? :) hhehhehe
look at martys answer above...i was going to do this to mine and make the tonestack switchable...
ive never seen an actual stackless board...oh wait i think i saw someone squeezed a stackless one in a 1590a...
believe it or not...dont remember who though...it was in the pictures thread i think...a while back...
There was a non tonestack version at Gausmarkov.
If its not there PM me and I will try to dig it out of my archives for you.
EDIT-Look here http://www.aronnelson.com/gallery/main.php/v/Brymus/Dr+Boogie/ (http://www.aronnelson.com/gallery/main.php/v/Brymus/Dr+Boogie/)
Thanks 100 times! :) rob we are in two the same thread hehehe you said in the other "dead links?" hehehehe :icon_twisted:
A2
Hi i have another question . . is BMP tone stack work on this Br boogey, does anybody tried this? or should have active tone stack? like ROG's tonemender to work?
Cheers
A2
Regards Askwhos post sort of... I'd quite like to add a tone stack like that found on the 'Pocket Metal Muff' by Electro Harmonix to this... rather than having knobs, it's just a fixed tone stack with a 3-Way Mid Switch for Scooped, Flat & Hump.
What would be the best and simplest way to implement something like this? Just adding a Big Muff Tonestack with a trimmer instead of the knob and a cap switch or is there a better way to go about it, that could cost me some low end or treble due to its see-saw like action and a Baxandall is starting to add too many parts to get her all on a 1590B PCB with board mounted pots with room for battery nicely... I suppose just putting fixed resistors inplace of the Bass & Mids of the normal three way tone stack would work but then i'd need to add the 5th transistor back in.
Any ideas?
Hey Brymus, it´s nothing in there...so I try a PM... ???
You have to click on download document ;)
EDIT ok first you click on the blue words " no thumbnail " then " download document "
It threw me off the first time I tried link to a PDF in the gallery too. :D
Didn´t work. It says "not a supported file or damaged" after downloading, saving as a pdf and try to open.
it worked for me.... ???
do you want it emailed?... ;)
Jup, thanks Rob. ;D
your welcome.. , done... 8)
Quote from: Scruffie on December 06, 2010, 09:18:27 PM
Regards Askwhos post sort of... I'd quite like to add a tone stack like that found on the 'Pocket Metal Muff' by Electro Harmonix to this... rather than having knobs, it's just a fixed tone stack with a 3-Way Mid Switch for Scooped, Flat & Hump.
What would be the best and simplest way to implement something like this? Just adding a Big Muff Tonestack with a trimmer instead of the knob and a cap switch or is there a better way to go about it, that could cost me some low end or treble due to its see-saw like action and a Baxandall is starting to add too many parts to get her all on a 1590B PCB with board mounted pots with room for battery nicely... I suppose just putting fixed resistors inplace of the Bass & Mids of the normal three way tone stack would work but then i'd need to add the 5th transistor back in.
Any ideas?
hi scruffie, on the original post by marty, he says about the 27n 15k etc...is this some sort of tone mod?..(as he says ROG sim style?)
i have a boogie on my desk now and have a croc clip from Q4 straight to the vol pot and it seems ok..
also would a pot from the caps he suggested to ground act as a tone?..just thinking aloud..!
He is talking cab sim.
Look at the end of the schematic,page 2 in the PDF
Quote from: Brymus on December 07, 2010, 02:23:29 PM
He is talking cab sim.
Look at the end of the schematic,page 2 in the PDF
hi bryan, yeah i see that...
so is it added as part of a cab sim?...or can this be left off....?
I think thats been added to round off the sharp high end.
Kind of a ballpark spkr simulator.
It would be simple enough to add it then bypass it on the breadboard to see which you like better.
Quote from: Brymus on December 07, 2010, 05:32:31 PM
I think thats been added to round off the sharp high end.
Kind of a ballpark spkr simulator.
It would be simple enough to add it then bypass it on the breadboard to see which you like better.
ok i see....yes i will have a look into that...cheers bryan.
Quote from: Scruffie on December 06, 2010, 09:18:27 PM
Regards Askwhos post sort of... I'd quite like to add a tone stack like that found on the 'Pocket Metal Muff' by Electro Harmonix to this... rather than having knobs, it's just a fixed tone stack with a 3-Way Mid Switch for Scooped, Flat & Hump.
What would be the best and simplest way to implement something like this? Just adding a Big Muff Tonestack with a trimmer instead of the knob and a cap switch or is there a better way to go about it, that could cost me some low end or treble due to its see-saw like action and a Baxandall is starting to add too many parts to get her all on a 1590B PCB with board mounted pots with room for battery nicely... I suppose just putting fixed resistors inplace of the Bass & Mids of the normal three way tone stack would work but then i'd need to add the 5th transistor back in.
Any ideas?
i can't really get the picture of it.. mmmhh so trimmer BMP tone stack then no knobs? just trimmer? then a 3 way mid scoop spdt switch to choose which mid? am i correct? can make some simple schematics out of it?
A2
its as it is on the schematic..., he just added the 27n, 15k's etc.....
leave them off if you like...or build it as is...
if you have the normal boogie...just use a toggle to turn off the stack from Q4 to the volume..
get ya croc clips out... :icon_mrgreen:
Here we go, I did a PCB Layout for this to fit a 1590B with Onboard Pots (Mounted on back of the board) With the Big Muff Tone Stack (Trimmer rather than Pot, Could wire a pot up though, or use a Trimmer Knob).
Values as Follows For it
TR5 - 1M
R15 - 4.7k
C19 - 6.8n
C20 - 6.8n
Change R16 Between
10k - Scooped
47k - Flat Mids
100k - Mids Hump
The Rest of the Values Follow the Schematic Earlier in the Thread.
Board Measures 53.34 x 53.34mm
If anyone wants to etch me one, I wouldn't say no :icon_mrgreen:
(http://i898.photobucket.com/albums/ac182/Scruffie_Crow/1590BDrBBigMuffTSSS.gif?t=1292791875)
(http://i898.photobucket.com/albums/ac182/Scruffie_Crow/1590BDrBBigMuffTSPCB.gif?t=1292791878)
nice one scruffie,
i'd have a tone pot i think....looks good ...obviously not verified going by your pcb request, :icon_wink: but as good as....
am gonna have to make a big muff tone control,just to hear what its like...
in fact i was going to build a whole bunch of different tsc tone controls in a big box , just to compare with different stuff.....a tone factory if you like...
but hey thats yet another mission to do..hmmmm..oneday...when i get my legs working again.... :icon_mrgreen:
Quote from: deadastronaut on December 19, 2010, 07:39:57 PM
nice one scruffie,
i'd have a tone pot i think....looks good ...obviously not verified going by your pcb request, :icon_wink: but as good as....
am gonna have to make a big muff tone control,just to hear what its like...
in fact i was going to build a whole bunch of different tsc tone controls in a big box , just to compare with different stuff.....a tone factory if you like...
but hey thats yet another mission to do..hmmmm..oneday...when i get my legs working again.... :icon_mrgreen:
Well I made it cause to me the Big Muff Tone Control is set and forget it's such a see saw motion it's only right in one place with your amp and the 3 way switch option lets you go for that scooped, flat or mid sound depending on bedroom or actual gig.
You can buy knobs that stick in trimmers if you want that option, I can also rework the layout if you want
Nah it's not verified, I can't etch at all, but I make layouts for stuff I want specifically (I love onboard pots and no stand up resistors plus 1590Bs) and also it helps me practice for the big layouts like my EHX Attack Decay PCB i'm doing next hehehe :icon_mrgreen:
Regards Tone Stacks, My Favourite is the Baxandall, You can get any combination needed with that in my opinion, I only went with the big muff here for space and to get the mids control.
yeah gotcha, i like the idea of the 3way toggle....that'd be good...
Quote from: deadastronaut on December 19, 2010, 08:31:07 PM
but hey thats yet another mission to do..hmmmm..oneday...when i get my legs working again.... icon_mrgreen
Just got this ;D Glad you're enjoying your present.
Nice layout scruffie! did you verified it? hhehe its so small i really like your layout and i like small layouts for space an saves money a lot, for knobs and enclosure and also for drilling time...
A2
Quote from: askwho69 on December 20, 2010, 08:43:54 AM
Nice layout scruffie! did you verified it? hhehe its so small i really like your layout and i like small layouts for space an saves money a lot, for knobs and enclosure and also for drilling time...
A2
Why thank you ;)
Nah it's not verified, if someone etches me one i'll verify it but I don't have the etching equipment myself.
Quote from: Scruffie on December 20, 2010, 08:45:21 AM
Quote from: askwho69 on December 20, 2010, 08:43:54 AM
Nice layout scruffie! did you verified it? hhehe its so small i really like your layout and i like small layouts for space an saves money a lot, for knobs and enclosure and also for drilling time...
A2
Why thank you ;)
Nah it's not verified, if someone etches me one i'll verify it but I don't have the etching equipment myself.
scruffie...im getting a dremel drill press for xmas...i think...i sort of know i am....i peeked at the label n the box ha ha......your a london dude arent you?.....
i'll etch and drill a couple up n send ya one if you like....as long as you verify it.. :icon_mrgreen:. probably be just after xmas though ok.. :icon_mrgreen:
Quote from: deadastronaut on December 20, 2010, 09:11:16 AM
Quote from: Scruffie on December 20, 2010, 08:45:21 AM
Quote from: askwho69 on December 20, 2010, 08:43:54 AM
Nice layout scruffie! did you verified it? hhehe its so small i really like your layout and i like small layouts for space an saves money a lot, for knobs and enclosure and also for drilling time...
A2
Why thank you ;)
Nah it's not verified, if someone etches me one i'll verify it but I don't have the etching equipment myself.
scruffie...im getting a dremel drill press for xmas...i think...i sort of know i am....i peeked at the label n the box ha ha......your a london dude arent you?.....
i'll etch and drill a couple up n send ya one if you like....as long as you verify it.. :icon_mrgreen:. probably be just after xmas though ok.. :icon_mrgreen:
Tut tut ;)
Yeah I am... well I will be london again after christmas atleast, Yup i'll verify it! That'd be much appreciated :)
ok...no problem...
Nice one scruffie! thanks A lot
Hey deadastronaut, how's that new dremel workin' out for ya? :icon_mrgreen:
Quote from: Scruffie on December 19, 2010, 03:51:58 PM
(http://i898.photobucket.com/albums/ac182/Scruffie_Crow/1590BDrBBigMuffTSPCB.gif?t=1292791878)
PDF? For having vectorized pcb.
Quote from: meffcio on December 28, 2010, 07:10:24 PM
PDF? For having vectorized pcb.
Nooo idea how to make it a PDF, someone else'll have to do that.
Quote from: Scruffie on December 28, 2010, 07:18:08 PM
Nooo idea how to make it a PDF, someone else'll have to do that.
What soft did you use to create the pcb? Could you send me the project files?
And btw - any suggestions on wiring a SPDT switch for changing R16 between those 3 values?
Or should I just wire a 100k lin pot (in series with 10k resistor)?
Quote from: meffcio on December 28, 2010, 07:37:23 PM
Quote from: Scruffie on December 28, 2010, 07:18:08 PM
Nooo idea how to make it a PDF, someone else'll have to do that.
What soft did you use to create the pcb? Could you send me the project files?
And btw - any suggestions on wiring a SPDT switch for changing R16 between those 3 values?
Or should I just wire a 100k lin pot (in series with 10k resistor)?
Express PCB, I can send you the files if you want yes, PM me.
You need an On/Off/On switch middle would be 10k other side 37k (Or Closest value) other side 90k (Or Closest value)
Edit: Crap they would be in parallel wouldn't they so 100k in the middle, 100k on one side and 10k on the other.
Quote from: Scruffie on December 28, 2010, 04:09:23 PM
Hey deadastronaut, how's that new dremel workin' out for ya? :icon_mrgreen:
its not!.. :-\..i thought i was getting the drill and press..
she got me the press only..which will only take a dremel drill....arghhhhhhhhhhhh..what a bastard!....and it looks rubbish..plasticy...going to ebay it.. :icon_rolleyes: (this was my face xmas day> :-\
i have a minicraft drill which is excellent anyway, so ive been looking for a minicraft drill press...i found one online..around 40quid, and it will fit any mini drill..
i wish women would ask what tools you would like...arghhhhhhhhhhhhhhhh.....
back to doing my pcbs on my table again...for now... :icon_rolleyes: :icon_mrgreen:
just to top off my xmas day, she bought me call of duty black ops, which my pc wont run...ha ha...merry f*****g xmas... :icon_mrgreen:
Quote from: Scruffie on December 28, 2010, 07:43:58 PM
You need an On/Off/On switch middle would be 10k other side 37k (Or Closest value) other side 90k (Or Closest value)
Edit: Crap they would be in parallel wouldn't they so 100k in the middle, 100k on one side and 10k on the other.
Um, well... I'll just put it as a pot ;p A 4-knob distortion to share enclosure with diy Tech21 XXL ;]
Quote from: deadastronaut on December 29, 2010, 04:38:29 AM
just to top off my xmas day, she bought me call of duty black ops, which my pc wont run...ha ha...merry f*****g xmas... :icon_mrgreen:
Classic ;D
classic yeah!... :icon_rolleyes:
still its made me look into upgrading my prehistoric pc...
i can get an intel 3ghz dual core, 4gb 1333mhzddr3 ram...and moboard for 135quid...not bad.. :icon_cool:
1gb graphicscard for 47quid..so roughly 180quid for a nice pc...(that also plays call of f****g duty)....sigh!.
its just all the agro of reinstalling and setting up my pc as is, thats gonna be a s**t.....bloody women....argghhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhh......................... :icon_mrgreen:
on the positive side though, a nice clean smooth running pc....i hope. :icon_mrgreen:
Quote from: deadastronaut on December 29, 2010, 04:38:29 AM
Quote from: Scruffie on December 28, 2010, 04:09:23 PM
Hey deadastronaut, how's that new dremel workin' out for ya? :icon_mrgreen:
its not!.. :-\..i thought i was getting the drill and press..
she got me the press only..which will only take a dremel drill....arghhhhhhhhhhhh..what a bastard!....and it looks rubbish..plasticy...going to ebay it.. :icon_rolleyes: (this was my face xmas day> :-\
i have a minicraft drill which is excellent anyway, so ive been looking for a minicraft drill press...i found one online..around 40quid, and it will fit any mini drill..
i wish women would ask what tools you would like...arghhhhhhhhhhhhhhhh.....
back to doing my pcbs on my table again...for now... :icon_rolleyes: :icon_mrgreen:
just to top off my xmas day, she bought me call of duty black ops, which my pc wont run...ha ha...merry f*****g xmas... :icon_mrgreen:
Aww :( Well atleast you got something! I didn't get anything :(
I think i've seen those before, almost bought one but realised it wouldn't be much use, nice to know I didn't waste my time.
Quote from: meffcio on December 29, 2010, 07:44:38 AM
Quote from: Scruffie on December 28, 2010, 07:43:58 PM
You need an On/Off/On switch middle would be 10k other side 37k (Or Closest value) other side 90k (Or Closest value)
Edit: Crap they would be in parallel wouldn't they so 100k in the middle, 100k on one side and 10k on the other.
Um, well... I'll just put it as a pot ;p A 4-knob distortion to share enclosure with diy Tech21 XXL ;]
4-Knob? Where's the 4th coming from? It's not that complicated to do the switch though if you want I can help you.
E-mailed you the files now anywho.
Aww :( Well atleast you got something! I didn't get anything :(
nevermind, at least you didnt get dissapointed with stuff you didnt want....... :icon_wink:
i think i need a new girlriend........ :icon_mrgreen:
Quote from: Scruffie on December 29, 2010, 10:24:48 AM
4-Knob? Where's the 4th coming from? It's not that complicated to do the switch though if you want I can help you.
Gain, Tone, Level, and... let's say Scoop? Or maybe Contour? I can handle wiring the switch, but this way (with the pot) it can be more versatile, don't you think? If it fails, maybe I'll just use rotary switch. ;p
Quote from: Scruffie on December 29, 2010, 10:24:48 AM
E-mailed you the files now anywho.
Thanks, i got it.
Quote from: deadastronaut on December 29, 2010, 10:38:13 AM
i think i need a new girlriend........ :icon_mrgreen:
Cruel ;d
[EDIT]
Don't know how to upload things here, so did it on megaupload.
http://www.megaupload.com/?d=Z5JHOEPX
Quote from: meffcio on December 29, 2010, 11:14:56 AM
Gain, Tone, Level, and... let's say Scoop? Or maybe Contour? I can handle wiring the switch, but this way (with the pot) it can be more versatile, don't you think?
Are you planning on implementing a Contour mod a-la the BSIAB2?
Quote from: Govmnt_Lacky on December 29, 2010, 12:03:38 PM
Are you planning on implementing a Contour mod a-la the BSIAB2?
I don't know how it's done in BSIAB2, but I'm going to
Quote from: Scruffie on December 19, 2010, 03:51:58 PM
Change R16 Between
10k - Scooped
47k - Flat Mids
100k - Mids Hump
using a pot.
I bet it's almost the same way in BSIAB2, but I heard it's not free of 'bugs' there.
In case someone omited that, here is the
ready-to-print PCB for Dr. Boogey with BMP tonestack in PDF version:
http://www.megaupload.com/?d=Z5JHOEPX
Components layout on page 2.
I'm making it sooner or later.
Quote from: meffcio on December 29, 2010, 12:15:06 PM
I bet it's almost the same way in BSIAB2, but I heard it's not free of 'bugs' there.
I recently built the BSIAB2 with the Contour mod and I must say that I am quite pleased with it. The only problem I have is that you MUST adjust the Volume & Gain pots to get an output. (This is in the original circuit.... not just with the Contour mod) I really dont like this but, it is not worth the hassle to figure out a work around. All-in-all a GREAT PEDAL with the mod though. ;D
basically what does contour do in a pedal? is it mid boosting? frankly i love marshall amp that has contour on it its sounds creamy and vulgar . . .
Is the layout verified?
A2
Quote from: askwho69 on December 29, 2010, 01:19:50 PM
basically what does contour do in a pedal? is it mid boosting? frankly i love marshall amp that has contour on it its sounds creamy and vulgar . . .
Well, I bet 'contour' is not always the same. If it was a simple 'mid' controler it wouldn't deserve to be named in other way ;p
But yes, most 'contour' controls I met were just adjusting some of the mids ;) In my previous amp, the Marshall MG 50DFX, it just acted like a reversed middle pot with a bigger freq range. Contour on 0 - kinda rock/country sound. Contour on 10 - ultra satan scoop.
Quote from: askwho69 on December 29, 2010, 01:19:50 PM
Is the layout verified?
A2
No, it isn't for now. But it's a matter of time. Even I'm planning to build (and by the way verify) that thing, but someone other may do it first.
i cant make my pcb's till 5th/6thjanuary till my secretary (girlfriend) gets off her backside and goes back to work..where a lazer printer awaits her return... :icon_wink:
And I can't verify it unless someone makes me a PCB and even then, think i'm outta a few parts for now.
Quote from: Scruffie on December 29, 2010, 02:27:20 PM
And I can't verify it unless someone makes me a PCB and even then, think i'm outta a few parts for now.
i'll make ya one, seeing as you didnt get anything for xmas..as a present ok.. :icon_wink:
itll give you time to get the bits....btw what size trimmers will it need?...
Quote from: deadastronaut on December 29, 2010, 02:55:37 PM
Quote from: Scruffie on December 29, 2010, 02:27:20 PM
And I can't verify it unless someone makes me a PCB and even then, think i'm outta a few parts for now.
i'll make ya one, seeing as you didnt get anything for xmas..as a present ok.. :icon_wink:
itll give you time to get the bits....btw what size trimmers will it need?...
;D Thankk youuu ;)
Yeah that's true, for the inline trimmers, i'd use the cermet ones at the bottom of this page - http://www.bitsbox.co.uk/resistors/presets.html
or http://www.doctortweek.co.uk/shop/catalog/browse?shop_param=shop_overview_pager%3D2%26cid%3D34%26
For the Tone Knob Trimmer, Me personally i'm gunna stick fixed resistors in its place but you need one of those Square Horizontal type or the type futurlec stock - http://www.futurlec.com/PotTrim.shtml
I could and might alter the layout to allow for other trims though... if there's space.
Edit: Futurlec Stock Both Kinds needed http://www.futurlec.com/PotRect.shtml
Quote from: deadastronaut on December 29, 2010, 01:48:13 PM
i cant make my pcb's till 5th/6thjanuary till my secretary (girlfriend) gets off her backside and goes back to work..where a lazer printer awaits her return... :icon_wink:
Almost same as me. I don't own a (imma firin mah) lazer printer, so my dad prints pcb at work, but now he's on vacation.
yeah id go with the bitbox multiturns i think...
id have a full size pot for the tone too....just for instant tweakability....
@mefficio..yeah id love my own lazer printer....but when someone can do it for you for nothing....great!.. :icon_mrgreen:
hahahah! very funny reasons! :)
hi guys, i ripped meffcio's nice pdf...very smooth and detailed graphic and duplicated it on A4...ready to print at 100%
@meffcio, how did you get scruffies pcb layout to cleanup that good?..very sharp...are you using inkscape?..
edit: removed, the pcb was too large......i'll try again. :icon_rolleyes:
Quote from: deadastronaut on January 04, 2011, 02:49:32 PM
hi guys, i ripped meffcio's nice pdf...very smooth and detailed graphic and duplicated it on A4...ready to print at 100%
@meffcio, how did you get scruffies pcb layout to cleanup that good?..very sharp...are you using inkscape?..
edit: removed, the pcb was too large......i'll try again. :icon_rolleyes:
GO GO GO ROB
Quote from: askwho69 on January 05, 2011, 05:37:17 AM
Quote from: deadastronaut on January 04, 2011, 02:49:32 PM
hi guys, i ripped meffcio's nice pdf...very smooth and detailed graphic and duplicated it on A4...ready to print at 100%
@meffcio, how did you get scruffies pcb layout to cleanup that good?..very sharp...are you using inkscape?..
edit: removed, the pcb was too large......i'll try again. :icon_rolleyes:
GO GO GO ROB
i will i will i will...... :P
Quote from: deadastronaut on January 04, 2011, 02:49:32 PM
@meffcio, how did you get scruffies pcb layout to cleanup that good?..very sharp...are you using inkscape?..
No, I don't, it's even more simple than you think ;)
He made the layout in ExpressPCB, so I 'printed' it to PDF using ExpressPCB + PDFCreator from http://www.pdfforge.org/pdfcreator
The same way works for most of the software, excluding DIY Layout Creator. (shame...)
Quote from: meffcio on January 07, 2011, 06:28:23 PM
Quote from: deadastronaut on January 04, 2011, 02:49:32 PM
@meffcio, how did you get scruffies pcb layout to cleanup that good?..very sharp...are you using inkscape?..
No, I don't, it's even more simple than you think ;)
He made the layout in ExpressPCB, so I 'printed' it to PDF using ExpressPCB + PDFCreator from http://www.pdfforge.org/pdfcreator
The same way works for most of the software, excluding DIY Layout Creator. (shame...)
Sweet! I'll use this in future, does it just come out correctly sized then?
Quote from: Scruffie on January 07, 2011, 06:29:51 PM
Sweet! I'll use this in future, does it just come out correctly sized then?
It should, if you click adobe reader or other software to print without scaling.
ahhh...cool. cheers meffcio!...
Rob hows is it :)) :icon_biggrin: :icon_evil: :icon_idea: :icon_lol: :icon_mrgreen: :icon_question: :icon_surprised: :icon_rolleyes: :icon_twisted:
Quote from: askwho69 on January 08, 2011, 10:39:44 AM
Rob hows is it :)) :icon_biggrin: :icon_evil: :icon_idea: :icon_lol: :icon_mrgreen: :icon_question: :icon_surprised: :icon_rolleyes: :icon_twisted:
erm....not built yet!.....just made the pcbs..drilled n done...
i'm going to wait till scruffie gets his pcb and verifies/builds it....im sure h'ell give us a build report ...soonish... ;)
ohh thats nice of you rob! nice job~ :icon_evil:
I anticipate it'll sound like a Dr.Boogey... in a 1590B :-*
Quote from: Scruffie on January 09, 2011, 02:11:57 PM
I anticipate it'll sound like a Dr.Boogey... in a 1590B :-*
oh no!.....arghhhhhhhhhhhhhhhhh.... :icon_mrgreen:
this gonna be kick ass! save $ in enclosure and less in wiring.. i hate wiring pots! hehehe it will be best if it is on board pot :)
Quote from: askwho69 on January 09, 2011, 11:13:38 PM
this gonna be kick ass! save $ in enclosure and less in wiring.. i hate wiring pots! hehehe it will be best if it is on board pot :)
That's the plan! :)
I hate pot wiring too... And mounting floating boards.
Yeah :) \m/ horns up
What happend to this :icon_question: i was waiting foe this :D
Quote from: askwho69 on January 30, 2011, 08:54:06 AM
What happend to this :icon_question: i was waiting foe this :D
Still waiting on a few parts, had to postpone an order while I moved so it's taken a while.
I've checked the layout over though and i'd say just build it...
cool..........
\m/ \m/ :icon_twisted: :icon_twisted: :icon_twisted:
Quote from: Scruffie on December 19, 2010, 03:51:58 PM
Here we go, I did a PCB Layout for this to fit a 1590B with Onboard Pots (Mounted on back of the board) With the Big Muff Tone Stack (Trimmer rather than Pot, Could wire a pot up though, or use a Trimmer Knob).
Values as Follows For it
TR5 - 1M
R15 - 4.7k
C19 - 6.8n
C20 - 6.8n
Change R16 Between
10k - Scooped
47k - Flat Mids
100k - Mids Hump
Apologies if I'm overlooking the obvious, but is there a schematic for the above tone section? Also, 1M tone pot? :icon_eek:
Ok, I'll engage brain before posting:
R15 + 6n8 = LPF, R16 + 6n8 = HPF, 1M tone pot blends. Correct?
TIA
Quote from: elshiftos on May 02, 2011, 01:22:35 PM
Quote from: Scruffie on December 19, 2010, 03:51:58 PM
Here we go, I did a PCB Layout for this to fit a 1590B with Onboard Pots (Mounted on back of the board) With the Big Muff Tone Stack (Trimmer rather than Pot, Could wire a pot up though, or use a Trimmer Knob).
Values as Follows For it
TR5 - 1M
R15 - 4.7k
C19 - 6.8n
C20 - 6.8n
Change R16 Between
10k - Scooped
47k - Flat Mids
100k - Mids Hump
Apologies if I'm overlooking the obvious, but is there a schematic for the above tone section? Also, 1M tone pot? :icon_eek:
Ok, I'll engage brain before posting:
R15 + 6n8 = LPF, R16 + 6n8 = HPF, 1M tone pot blends. Correct?
TIA
Nah no schematic, I just tacked on a Big Muff TS where the Tonestackless schematic left off.
Use whatever values you want, I changed those in the end, can't recall what to at the moment.
Aha! Found what I used -
R16 (Switchable)
Scooped - 4.7k
Flat - 22k
Hump 47k
DPDT On/Off/On 47k Center, 47k One Side, 4.7k Other
C19 22n
R15 22k
C20 22n
Trim 100k Lin
That Clear It Up? And Yes you're right in your assumption of HPF & LPF.
Right... back with a proper build report on this one...
The Good news, it sounds great and there is no oscillation at any setting I could find, i'm not too keen on the multi turn trimmers for biasing by ear as they take alot of turns but that's a minor gripe and it sounded pretty nice at most settings anyway, perhaps not as heavy as a full stacked version because of the lack of tone shaping but still really nice.
Changes I would make would be to add a small cap across R15 so that you don't loose all the treble when you roll the tone stack down to the bass side and I do find the 3 way toggle to be pretty handy for different situations as it helps make up for that lack of tone shaping control.
The Bad news... there are 3 fixes needed to my layout (I'll update the layout and repost it here later, i'm going to add one or two things to it anyway).
If you built the first version you need to -
a) The easiest one, cut the trace connecting C2 & C3 and then connect the end you just cut of C2 to the Other side of C3.
b) Cut the Trace between C8 & R10 and then connect the now cut end of R10 to the other side of C8
c) The most complex fix (Not that hard though) Cut the trace going from the input up to Q1 Source (Leaving in tact the trace that runs from the source to R2 & C1) Remove C13 and Jumper Over it, then place C13 across the Gate and Source of Q1
And that's all that's required! (I say it like that, my board is now a mess of jumpers and lifted traces... but that was my own fault).
As my post above, I quite like that tone stack in this, of course you can forego the tone stack and just jumper from R14 to VOL Lug 3 (Hmm... perhaps adding a tonestack disengage switch could be a useful mod... if there's room i'll add pads on the new layout.
One last thing, it gets very tight on spots on the layout, so don't do what I did and have to keep lifting up the board mounted pots to get underneath to fix things cause that's how you end up with a bunch of lifted traces :icon_redface:
Thanks again for Rob for providing me with my late christmas present :icon_mrgreen: and sorry for taking so long to get this build report up.
Conclusion... awesome little pedal and in a 1590B!
Okay, ive redone the layout now to include pads to either have the tone stack switchable in and out of the circuit, to bypass it or you can just jumper them and have the tone stack in at all times.
I've also corrected the errors, changed the box cap 1uFs to Electros (Sod ordering special box caps) made a couple of places a little less tight and added in a shelve filter cap for the tone control so when you roll the bass down you don't loose all the highs.
Now... how do I upload PDFs...
Quote from: Scruffie on May 05, 2011, 08:41:22 PM
Aha! Found what I used -
R16 (Switchable)
Scooped - 4.7k
Flat - 22k
Hump 47k
DPDT On/Off/On 47k Center, 47k One Side, 4.7k Other
C19 22n
R15 22k
C20 22n
Trim 100k Lin
That Clear It Up? And Yes you're right in your assumption of HPF & LPF.
How do you wire something like that?
Quote from: DonB on May 30, 2011, 05:05:46 PM
Quote from: Scruffie on May 05, 2011, 08:41:22 PM
Aha! Found what I used -
R16 (Switchable)
Scooped - 4.7k
Flat - 22k
Hump 47k
DPDT On/Off/On 47k Center, 47k One Side, 4.7k Other
C19 22n
R15 22k
C20 22n
Trim 100k Lin
That Clear It Up? And Yes you're right in your assumption of HPF & LPF.
How do you wire something like that?
A 3-Way DPDT, The middle position is always connected so with a resistor either side they add in parallell so you work out the middle value plus the other sides value to see what they would equal, the middle should always be the largest value (with resistors, caps work the other way) so you have 47k center, you add 47k on the other side and you get close enough to 22k, other side you have a 4.7k and you end up with close enough to 4.7k.
Make sense?
(Appologies for spelling, had a few drinks :icon_mrgreen: )
Scruffie! do have the final schematic so that i can make a layout out of it :D
Quote from: askwho69 on May 30, 2011, 11:01:37 PM
Scruffie! do have the final schematic so that i can make a layout out of it :D
No Schematic i'm afraid, take the schematic at the start of this thread and slip a Big Muff (or whatever) tone stack before the volume control, that's all I did.
ohh ok how about the schematic of the tonestack"your modification" ? :D that may help :D
Wait, wait. Sorry for my absence. So, did you redo your layout? Or am I misunderstanding?
If so, I suggest you to send the file(s) here: http://www.mediafire.com/ It's simple, everything is shown.
I'm getting back to DIY, so I'll soon be able to see how the circuit works.
Also, did you think about doing something like that
(http://www.beavisaudio.com/techpages/BigMuffToneControl/BodySchematic.gif) from that? :D (http://www.beavisaudio.com/techpages/BigMuffToneControl/OriginalSchematic.gif)
[EDIT]
And as the topic lacks it, here's the BOM:
(Tonestackless Boogey)
C1 1uF
C2 22nF
C3 2.2nF
C4 1nF
C5 20pF
C6 1uF
C7 22nF
C8 22nF
C9 1uF
C10 27nF
C11 2.2nF
C12 2.2nF
C13 220pF
C14 220pF
C15 220pF
C16 100uF
C17 5nF
C18 1nF
Q1 J201
Q2 J201
Q3 J201
Q4 J201
R1 1M
R2 1.8K
R3 2.2M
R4 680K
R5 470K
R6 1.8K
R7 470K
R8 1M
R9 3.9K
R10 330K
R11 220K
R12 1.8K
R13 15K
R14 15K
TRIM1 100K
TRIM2 100K
TRIM3 100K
TRIM4 100K
GAIN 1M-A
VOLUME 100K-A
(Added with Scruffie's version; from the post on 2nd page - to be corrected)
TR5 - 1M
R15 - 4.7k
C19 - 6.8nF
C20 - 6.8nF
Change R16 Between
10k - Scooped
47k - Flat Mids
100k - Mids Hump
I did a different version with a Baxandall Tone Stack, have a search.