Search found 41 matches

by kupervaser
03 Aug 2014, 17:56
Forum: Boutique Stompboxes dissected...
Topic: Black Arts Toneworks - Pharaoh [traced]
Replies: 103
Views: 58679

Re: Black Arts Toneworks - Pharaoh [traced]

Ah ok so the horus1 is the final and working layout?
Thanks.
by kupervaser
03 Aug 2014, 09:27
Forum: Boutique Stompboxes dissected...
Topic: Black Arts Toneworks - Pharaoh [traced]
Replies: 103
Views: 58679

Re: Black Arts Toneworks - Pharaoh [traced]

Hello, does anyone have the horus2.pdf file? I can;t seem to find it here.
Thanks
by kupervaser
11 Jan 2013, 08:56
Forum: Boutique Stompboxes dissected...
Topic: Crowther Audio - Hot Cake Overdrive [traced]
Replies: 323
Views: 168513

Re: Crowther Audio - Hot Cake Overdrive [traced]

Tried, but no luck.

I think I will build this layout on pcb and check if this will help:
https://dl.dropbox.com/u/3131065/Pedale ... oject2.pdf
by kupervaser
10 Jan 2013, 00:02
Forum: Boutique Stompboxes dissected...
Topic: Crowther Audio - Hot Cake Overdrive [traced]
Replies: 323
Views: 168513

Re: Crowther Audio - Hot Cake Overdrive [traced]

Tried some stuff.
Tried to use LM741 and LM351 opamps, no difference.

Tried to use a capacitor parallel with the 100k feedback resistor, didn't help either.
Tried to use a capacitor in parallel with the 470p capacitor, oscillation disappears but the gain reduces drastically.

Any ideas?
by kupervaser
09 Jan 2013, 12:31
Forum: Boutique Stompboxes dissected...
Topic: Crowther Audio - Hot Cake Overdrive [traced]
Replies: 323
Views: 168513

Re: Crowther Audio - Hot Cake Overdrive [traced]

I made this pedal from this layout:
Image

I made it true bypass.

It works well but oscillates when engaged. Does not oscillate in bypass. How should I start looking for a solution?

Thanks
by kupervaser
22 Dec 2011, 11:09
Forum: Boutique Stompboxes dissected...
Topic: Emma - Reezafratzitz [ goop-alarm ] [traced]
Replies: 176
Views: 91094

Re: Emma - Reezafratzitz [ goop-alarm ] [traced]

Built this thing last week. Didn't work in the first place, but later on I spotted a connection between traces due to a bad etch. After the fix it started working. Everything works well, sounds great, however i consistently wired all of the 4 pot meters backwards. Here are some pics and will post so...
by kupervaser
21 Aug 2009, 07:56
Forum: Vintage Stompbox Corner ( ... - 1975)
Topic: Univox - Superfuzz [schematic]
Replies: 456
Views: 299693

Re: Univox - Superfuzz [schematic]

Ok, cool, so I finished it. I ended up with 2n2222 transistors. I also tried the 2sc828 but they reduced the gain of the pedal. I find it strange because i measured the transistors and the 2sc828 had a higher HFE than 2n2222.
And i doublechecked the pin layout.
by kupervaser
21 Aug 2009, 07:53
Forum: Printed/Published Online Designs
Topic: DIEFET: Jfet simulation of the Diezel VH4
Replies: 222
Views: 104564

Re: DIEFET: Jfet simulation of the Diezel VH4

Is there already a version 1.3.?

Can you post the project files?

Thanx
by kupervaser
18 Aug 2009, 07:24
Forum: Vintage Stompbox Corner ( ... - 1975)
Topic: Univox - Superfuzz [schematic]
Replies: 456
Views: 299693

Re: Univox - Superfuzz [schematic]

...It may also produce the most noise. That would happen when both transistors are active at the same time for tiny, tiny signals; that would also account for the "least gated" note, maybe. I never noticed the noise as particularly varying, but I guess it could happen if you use noisy res...
by kupervaser
17 Aug 2009, 07:09
Forum: Vintage Stompbox Corner ( ... - 1975)
Topic: Univox - Superfuzz [schematic]
Replies: 456
Views: 299693

Re: Univox - Superfuzz [schematic]

Thanx R.G.

Yes, the newbies have to learn a lot yet.

What can you tell me about the delayed blast of hiss about a split second after you hit a note or chord Brad was talking about in the earlier posts. I am experience them too.

Thanx in advance,
by kupervaser
15 Aug 2009, 10:05
Forum: Vintage Stompbox Corner ( ... - 1975)
Topic: Univox - Superfuzz [schematic]
Replies: 456
Views: 299693

Re: Univox - Superfuzz [schematic]

I am still wondering what this intern trimpot really does? This comes from the byoc manual for the Leeds Fuzz: There are rumors circulating the internet that this trimpot controls the amount of octave effect that mixes in with the fuzz. This is somewhat true, but keep in mind that if you used this t...
by kupervaser
29 Jul 2009, 10:57
Forum: Printed/Published Online Designs
Topic: DIEFET: Jfet simulation of the Diezel VH4
Replies: 222
Views: 104564

Re: DIEFET: Jfet simulation of the Diezel VH4

What size enclosure is this and can you post the inside pictures?

THanx
by kupervaser
09 Jun 2009, 21:34
Forum: Modern Stompbox Effects (1975 - ...)
Topic: Vox - CT07DO Cooltron Duel Overdrive
Replies: 13
Views: 8120

Re: Vox Duel Overdrive tube / cloning?

Here you can find the schematic for the Vox Big Ben Overdrive.
I've been told that the Vox Duel overdrive is basically twice the big ben.
by kupervaser
09 Jun 2009, 09:54
Forum: Modern Stompbox Effects (1975 - ...)
Topic: Vox - CT07DO Cooltron Duel Overdrive
Replies: 13
Views: 8120

Re: Vox Duel Overdrive tube / cloning?

This pedal is actually 2 times VOX Big Ben Overdrive only with a bass boost.

I thought already that the tube isn't really doing any huge overdrives here. There is way too much gain in thi pedal to come from a tube.
by kupervaser
09 Jun 2009, 07:00
Forum: Modern Stompbox Effects (1975 - ...)
Topic: Vox - CT07DO Cooltron Duel Overdrive
Replies: 13
Views: 8120

Re: Vox Duel Overdrive tube / cloning?

Oh yeah exaclty, it has one of those blue leds behind the tube, looks fancy.

So what would be the procedure to convert this into a schematic and a new pcb + layout?
by kupervaser
08 Jun 2009, 18:03
Forum: Modern Stompbox Effects (1975 - ...)
Topic: Vox - CT07DO Cooltron Duel Overdrive
Replies: 13
Views: 8120

Re: Vox Duel Overdrive tube / cloning?

Oh yeah like that, i see. At least there are components on one side!
by kupervaser
08 Jun 2009, 17:38
Forum: Modern Stompbox Effects (1975 - ...)
Topic: Vox - CT07DO Cooltron Duel Overdrive
Replies: 13
Views: 8120

Re: Vox Duel Overdrive tube / cloning?

Hey I opend it up and actyally it is singlesided and doesn;t look really complicated, however i find it very difficult to track down. Here are the pictures: https://i642.photobucket.com/albums/uu144/kupervaser/Vox%20Duel%20Overdrive/P1010333.jpg https://i642.photobucket.com/albums/uu144/kupervaser/V...
by kupervaser
08 Jun 2009, 14:47
Forum: Modern Stompbox Effects (1975 - ...)
Topic: Vox - CT07DO Cooltron Duel Overdrive
Replies: 13
Views: 8120

Re: Vox Duel Overdrive tube / cloning?

Sorry, i am not used this forum yet. Thanx
by kupervaser
08 Jun 2009, 14:18
Forum: Modern Stompbox Effects (1975 - ...)
Topic: Vox - CT07DO Cooltron Duel Overdrive
Replies: 13
Views: 8120

Vox - CT07DO Cooltron Duel Overdrive

I own this pedal: Vox Duel Overdrive. http://www.mydukkan.com/media/vox.voxcooltrondueloverdrive.jpg I like this pedal so much, i would like to replicate it. I opened it up once and it is full of smd components. Is there anyone who can help me trace it and make a schematic and a pcb layout and a com...