Search found 80 matches
- 26 Oct 2022, 11:04
- Forum: Amplifiers
- Topic: Marshall - JMP-1: footswitch schematic?
- Replies: 10
- Views: 9652
Re: Marshall - JMP-1: footswitch schematic?
Thanks very muck Karul, I didn't even know such an upload was possible. One seller en Reverb builds one, which contains a small PCB, with 2 IC's, a few resistors and capacitors. Il found a schematic for a 6100 pedalboard (3 button). patafix, keep in mind for the next time, links for the schematic li...
- 25 Oct 2022, 16:46
- Forum: Amplifiers
- Topic: Marshall - JMP-1: footswitch schematic?
- Replies: 10
- Views: 9652
Re: Marshall - JMP-1: footswitch schematic?
Caution necro bumb ! I Just bought a JMP1, and plan to build a 4 button pedalboard for it. One seller en Reverb builds one, which contains a small PCB, with 2 IC's, a few resistors and capacitors. Il found a schematic for a 6100 pedalboard (3 button). http://home.myfairpoint.net/vze1u14s/sitebuilder...
- 26 May 2020, 13:57
- Forum: Modern Stompbox Effects (1975 - ...)
- Topic: Fender - Yngwie Malmsteen Overdrive
- Replies: 41
- Views: 19178
Re: Fender Yngwie Malmsteen Overdrive
Could it be some kind of Voodoo Lab OD, which essentially is a DOD250 + additionnal gain stage.
- 30 Dec 2018, 08:08
- Forum: Modern Stompbox Effects (1975 - ...)
- Topic: Maxon - OOD-9 ( Organic Overdrive )
- Replies: 18
- Views: 9917
Re: Maxon - OOD-9 ( Organic Overdrive )
Some kind of boss od-1 cousin ???
- 24 Nov 2018, 09:58
- Forum: Modern Stompbox Effects (1975 - ...)
- Topic: Seymour Duncan - Pickup Booster [schematic]
- Replies: 38
- Views: 38842
Re: Seymour Duncan - Pickup Booster [schematic]
Since the topology of its circuit is basically a discrete opamp, has someone tried to build it using an IC ???
- 04 Jul 2014, 18:07
- Forum: ICs (Integrated Circuits)
- Topic: Building A 4558 opamp from scratch.
- Replies: 20
- Views: 17605
Re: Building A 4558 opamp from scratch.
If I were you, I'd build a very simple disrete opamp for audio applications.
I made two of them, including the diode opamp (https://www.diystompboxes.com/analogalc ... opamp.html)which sounds quite good for distortion applications.
I made two of them, including the diode opamp (https://www.diystompboxes.com/analogalc ... opamp.html)which sounds quite good for distortion applications.
- 04 Jun 2014, 16:45
- Forum: Electric Guitar/Bass Wiring
- Topic: RMC - Poly-Drive X [schematic]
- Replies: 10
- Views: 18148
Re: Poly-Drive X by RMC -schematic [schematic]
They made a revision in 2011. I ordered one. I can offer shots since I haven't installed it in my guitar yet.
There are a couple of mods from what I see, the most noticeable is the presence of two additional transistors and the swap of a tone cap from 33n to 47n...
There are a couple of mods from what I see, the most noticeable is the presence of two additional transistors and the swap of a tone cap from 33n to 47n...
- 24 Jul 2013, 09:53
- Forum: Printed/Published Online Designs
- Topic: Trouble with the blend circuit of a bass fuzz I'm working on
- Replies: 1
- Views: 1671
Re: Trouble with the blend circuit of a bass fuzz I'm workin
One thing to have in mind is that Fuzz Face type circuits (which the Wooly Mammoth essentially is) don't like buffered signals. unfortunately your splitter/blender circuit needs the signal to be buffered. I would suggest you to put a 10k trimpot between C5 and C6 so that it forms a LPF to remove som...
- 30 Apr 2013, 09:58
- Forum: Boutique Stompboxes dissected...
- Topic: Noisemaker Donner Party
- Replies: 4
- Views: 2028
Re: Noisemaker Donner Party
IMHO, just a simple "Buzz Box" with two 1N914...
- 27 Apr 2012, 10:35
- Forum: Boutique Stompboxes dissected...
- Topic: Resonant Manifold Drive
- Replies: 53
- Views: 12333
Re: Resonant Manifold Drive
Anything news from a verified schemo ???
- 18 Apr 2012, 12:45
- Forum: Boutique Stompboxes dissected...
- Topic: Resonant Manifold Drive
- Replies: 53
- Views: 12333
Re: Resonant Manifold Drive
...such a pity.
I promise I'll be patient...
I promise I'll be patient...
- 18 Apr 2012, 06:31
- Forum: Boutique Stompboxes dissected...
- Topic: Resonant Manifold Drive
- Replies: 53
- Views: 12333
Re: Resonant Manifold Drive
I think (for myself and a lot more) that we've been patient enough Traced ? Projected ? PDF-ed ?
- 23 Mar 2012, 20:21
- Forum: Modern Stompbox Effects (1975 - ...)
- Topic: Mods for Boss SuperOverdrive?
- Replies: 3
- Views: 1957
Re: Mods for Boss SuperOverdrive?
Changing the resistor between (-) input and the cap tied to ground or Vbias for a one with a higher value can also do the trick : increase in bass response & lower gain...
- 01 Mar 2012, 09:15
- Forum: Boutique Stompboxes dissected...
- Topic: Way Huge - Swollen Pickle
- Replies: 96
- Views: 40664
Re: Way Huge - Swollen Pickle
Wow - It's quite tempting to build one of these with all seven pots on the outside to create some kind of uber-Muff... how many pots does the Way Huge have? I don't see any trimmers. it looks like he scaled back the bias resistors(/10)- less noise, more current draw, lower input impedance. I like t...
- 10 Feb 2012, 14:53
- Forum: Boutique Stompboxes dissected...
- Topic: Resonant Electronic Design Acceleron Fuzz
- Replies: 35
- Views: 15446
Re: Resonant Electronic Design Acceleron Fuzz
... to ensure clean dirt of course ! Anyway I'm looking forward to learning more (from another gutshot, if available) !!!
- 21 Dec 2011, 12:02
- Forum: Modern Stompbox Effects (1975 - ...)
- Topic: GFS - Bluesdrive Classic Overdrive
- Replies: 7
- Views: 4234
Re: GFS Bluesdrive Classic Overdrive
Kind of a dist+ / DOD OD ... and many more !
- 20 Dec 2011, 07:42
- Forum: Modern Stompbox Effects (1975 - ...)
- Topic: GFS - Bluesdrive Classic Overdrive
- Replies: 7
- Views: 4234
Re: GFS Bluesdrive Classic Overdrive
I'm not sure it's a "pure" RAT clone :
- Only one set Resistor / Capacitor, from NFB of the opamp to ground.
- No output buffer.
My guess is just an single opamp stage with LEDS to ground...
- Only one set Resistor / Capacitor, from NFB of the opamp to ground.
- No output buffer.
My guess is just an single opamp stage with LEDS to ground...
- 14 Dec 2011, 09:54
- Forum: Modern Stompbox Effects (1975 - ...)
- Topic: GFS - Bluesdrive Classic Overdrive
- Replies: 7
- Views: 4234
Re: GFS Bluesdrive Classic Overdrive
Looks modded ! (Clipping red LEDs instead of regular Si diodes I presume).
- 06 Dec 2011, 17:01
- Forum: Boutique Stompboxes dissected...
- Topic: Burford Electronics - Reactor Fuzz
- Replies: 14
- Views: 5153
Re: Burford Electronics - Reactor Fuzz
Photos gone !!! Anyone has a copy ??? Thanks !
- 21 Jul 2011, 09:49
- Forum: Boutique Stompboxes dissected...
- Topic: Jetter - Gain Stage Black [traced]
- Replies: 31
- Views: 10249
Re: Jetter - Gain Stage Black [traced]
Pretty close to any "single opamp dirt pedal"... even a dist+. The main difference is the fact that the signal is not clipped by any diode... The dirt comes from the opamp itself. It must have a huge output level !