Search found 56 matches

by bc108
22 Nov 2021, 23:58
Forum: Pedal Debugging & Troubleshooting Support
Topic: EHX Deluxe Memory Boy - no feedback
Replies: 5
Views: 1234

Re: EHX Deluxe Memory Boy - no feedback

Love my DMB. Nice gutshots.. thanks for that. The only thing I would like to improve, is the Feedback knob sweep. It is very sensible from about 1 to 3 o o'clock. Before it doesn't change much, and at 3 or after start the crazy oscillation. I've seen that theres a B5K pot there.. maybe som C5K pot c...
by bc108
17 Nov 2021, 23:37
Forum: Boutique Stompboxes dissected...
Topic: WAY HUGE Saucy Box
Replies: 2
Views: 3310

Re: WAY HUGE Saucy Box

Bump!
I've seen/read that the "Beer" limited edition, is some kind of version of this one
by bc108
13 Nov 2021, 14:03
Forum: Boutique Stompboxes dissected...
Topic: Chase Tone - Secret Preamp [traced]
Replies: 20
Views: 22996

Re: Chase Tone - Secret Preamp [traced]

Thanks everybody. Just a straight EP version 3 preamp circuit, but what gets me confused is the output stage.
Image
Is not better a straight A500K output potentiometer?

What I'm missing there?
by bc108
12 Nov 2021, 22:02
Forum: Boutique Stompboxes dissected...
Topic: Chase Tone - Secret Preamp [traced]
Replies: 20
Views: 22996

Chase Tone - Secret Preamp [traced]

https://i.ebayimg.com/images/g/WicAAOxydlFSx1jO/s-l400.jpg https://images.reverb.com/image/upload/s--jBiSErjU--/a_exif,c_limit,e_unsharp_mask:80,f_auto,fl_progressive,g_south,h_620,q_90,w_620/v1487370434/b0bu0ou2fru2dsuojxxs.jpg https://www.modulargrid.net/img/modcache/19201.f.jpg We all know that ...
by bc108
02 Nov 2021, 12:23
Forum: Boutique Stompboxes dissected...
Topic: Fairfield Circuitry - The Barbershop (gut) [traced]
Replies: 153
Views: 89516

Re: Fairfield Circuitry - The Barbershop (gut) [traced]

Skip the SAG circuit and feed the 9V directly to the collector of Q3 to see if the squealing stops. How is the circuit built PCB, Vero or point-to-point? Yes, it skips. DIscovered a bad batch of 10k pots with it too :cry: With the new KSP2222 it works. Just not good when volume and gain are at max:...
by bc108
02 Nov 2021, 00:34
Forum: Boutique Stompboxes dissected...
Topic: Fairfield Circuitry - The Barbershop (gut) [traced]
Replies: 153
Views: 89516

Re: Fairfield Circuitry - The Barbershop (gut) [traced]

Update: no matter how many times, and pots I put there.. still sounds like a metal detector or some kind of oscillation. Could be the 2n2222? Update 2: yep.. was the f*****g 2n2222. Used a KSP2222A instead.. the same thing. Something I've discover and I don't know if is only my pedal.. but with volu...
by bc108
01 Nov 2021, 22:42
Forum: Boutique Stompboxes dissected...
Topic: Fairfield Circuitry - The Barbershop (gut) [traced]
Replies: 153
Views: 89516

Re: Fairfield Circuitry - The Barbershop (gut) [traced]

How do you feed in the supply voltage? with battery, plug-in power supply or other power supply unit? I've used a regulated and filtered power supply w/LM7809. And tried a Dunlop DC-brick to check. I'll keep looking around, J-fets w/6v at Drain without SAG pot, but I assume the trouble comes from t...
by bc108
01 Nov 2021, 13:06
Forum: Boutique Stompboxes dissected...
Topic: Fairfield Circuitry - The Barbershop (gut) [traced]
Replies: 153
Views: 89516

Re: Fairfield Circuitry - The Barbershop (gut) [traced]

Going crazy with this one. Built and suddenly, start to squeal and motorboating. Unbox, tested everything everywhere.. Not ground, not bad pots.. what could go wrong? The main squealing "control" is the SAG pot/resistor. I assume something is wrong with Jfets at this time.. Any help? Thanks!
by bc108
01 Oct 2021, 17:37
Forum: Modern Stompbox Effects (1975 - ...)
Topic: Diaz - Texas Square Face [schematic]
Replies: 3
Views: 4514

Re: Diaz - Texas Square Face [schematic]

Would 2N2222 a good replacement for NTE103?
by bc108
21 Sep 2021, 13:58
Forum: Boutique Stompboxes dissected...
Topic: Zvex - Distortron [traced]
Replies: 61
Views: 33354

Re: Zvex Distortron [traced]

deeno wrote: 22 Nov 2013, 22:08 and of course the schematic.
a correction, there is an error in the part list, the 47k resistors are R14 and R25, R26 does not exist, other hand the 5K1 resistors are
R3, R8, R12 and R24.
Years looking for this schematic. The "ultimate" version :lol:
by bc108
26 Aug 2021, 13:37
Forum: Boutique Stompboxes dissected...
Topic: Way Huge - Red Llama 25th Anniversary with Hi Cut
Replies: 12
Views: 6474

Re: Way Huge Red Llama 25th Anniversary with Hi Cut

Is the "hi cut" a low pass filter? Totally useless. Not a good sweep/range.
Use instead a BigMuff tone stack there, bypasseable by a switch, bumping some mids and get a lot more usable tone palette.
by bc108
01 Jul 2021, 15:33
Forum: Boutique Stompboxes dissected...
Topic: Boss - TB2W Tone Bender
Replies: 16
Views: 3676

Re: Boss Tone Bender TB-2W

Loved your video..! Thanks a lot... Looks like a normal GE Tone Bender MKII with a charge pump and/or voltage inverter and relay bypass... (all the hype is based in the crossover and of course, limited run) Thank you! There is the added feature of switching between 7V/9V/12V supply. I first thought...
by bc108
30 Jun 2021, 23:01
Forum: Boutique Stompboxes dissected...
Topic: Boss - TB2W Tone Bender
Replies: 16
Views: 3676

Re: Boss Tone Bender TB-2W

Loved your video..! Thanks a lot...

Looks like a normal GE Tone Bender MKII with a charge pump and/or voltage inverter and relay bypass...

(all the hype is based in the crossover and of course, limited run)
by bc108
15 Jun 2021, 13:21
Forum: Boutique Stompboxes dissected...
Topic: Earthquaker Devices - Disaster Transport JR [traced]
Replies: 12
Views: 12077

Re: EQD - Disaster Transport JR [traced]

I'm thinking in build this one into a small veroboard, and add before some Echoplex Preamp.
Is this one more "lo-fi" compared to Deep Blue, or Wampler Faux?
by bc108
27 May 2021, 23:24
Forum: Boutique Stompboxes dissected...
Topic: Way Huge - Red Llama 25th Anniversary with Hi Cut
Replies: 12
Views: 6474

Re: Way Huge Red Llama 25th Anniversary with Hi Cut

Built it on proto-board today. Nice, sounds almost the same compared with the classic one. R5+R6 (2M) adds a bit more of gain, but cut a bit of lows. C1 is EXTREMELY NECESSARY after R1 (at least on my test rig) to aboid motorboat or squealing when gain is at max. R8, C1 and VR1 makes almost not diff...
by bc108
19 May 2021, 01:00
Forum: Vintage Stompbox Corner ( ... - 1975)
Topic: Roger Mayer - Octavia [schematic]
Replies: 19
Views: 34160

Re: Roger Mayer - Octavia [schematic]

Found this little same pcb (from Tonepad) out there. Finished it, and sounding. http://tonepad.com/getFile.asp?id=120 A bit gated, to be honest. Any hint or thread where found some voltages? As I know, the important here are Q1 to Q3. My readings, V in 9.3: Q1 E=4.4V B=3.0V C=3.0v Q2 E=2.1V B=2.9V C...
by bc108
16 Apr 2021, 02:44
Forum: Boutique Stompboxes dissected...
Topic: Top Tone - Light Drive [traced]
Replies: 118
Views: 71224

Re: Top Tone - Light Drive [traced]

Found this great and usefull tracing of the SS-3 by Aion: https://aionfx.com/news/tracing-journal-cornish-ss-3-soft-sustain/ I've combined both versions: https://i.postimg.cc/VkXwZ5Kq/SS2-a-3.png Verdict: Now this overdrive sounds AMAZING. Not fizzy and saturated on highs: gain clarity on bass and m...
by bc108
09 Apr 2021, 18:40
Forum: Boutique Stompboxes dissected...
Topic: Top Tone - Light Drive [traced]
Replies: 118
Views: 71224

Re: Top Tone - Light Drive [traced]

A few years later: which is the most accurate SS-2 schematic? Thanks in advance :-) I built the GuitarPCB version and it sounds good to me. Didn't sound f@#)&d up, sounded about right from the first play. Thanks! I'll check that schematic I've used the effectslayouts.blogspot layout. Sounds rea...
by bc108
09 Apr 2021, 13:58
Forum: Boutique Stompboxes dissected...
Topic: Top Tone - Light Drive [traced]
Replies: 118
Views: 71224

Re: Top Tone - Light Drive [traced]

A few years later: which is the most accurate SS-2 schematic?

Thanks in advance :-)