Search found 464 matches

by MoonWatcher
05 Apr 2019, 01:57
Forum: Pimp-My-Cheap-Pedal
Topic: MI Audio Crunchbox Mods
Replies: 7
Views: 1965

Re: MI Audio Crunchbox Mods

It`s just an opamp and diodes to ground that cut the signal. It`s possible to make simple diode clipping circuits more responsive, but it needs a few more parts. The issue with the cleanup in a design like the Crunchbox has to do with the tone circuit. You're losing a lot of treble being shunted to...
by MoonWatcher
21 Mar 2019, 21:16
Forum: Boutique Stompboxes dissected...
Topic: J. Rockett Archer IKON gold
Replies: 13
Views: 2674

Re: J. Rockett Archer IKON gold

I really do think that the pedal business is a glorious opportunity that is squandered by lazy people that can't be bothered to learn basic electronics. While I won't argue that some of them are no doubt lazy, I think that a lot more of them are simply interested in making a profit with "a job that...
by MoonWatcher
24 Feb 2019, 01:51
Forum: Boutique Stompboxes dissected...
Topic: Rockett Blue Note OD [traced]
Replies: 49
Views: 23544

Re: Rockett Blue Note OD [traced]

All the Rockett pedals I have opened up have used 4001s, not 4007s. Not that it would make much difference either way. It should make absolutely no difference, at all. And, these types of diodes have very small dynamic resistance, so it's typically helpful to combine them in series with other diode...
by MoonWatcher
23 Feb 2019, 21:21
Forum: Boutique Stompboxes dissected...
Topic: Keeler Designs Push
Replies: 19
Views: 6320

Re: Keeler Designs Push

I seem to need to have the tone control almost full to be usable. Otherwise it's quite dark. Maybe I should try an audio taper pot there? You may want to try to either wire a log taper pot "in reverse," like a Rat's filter control, or get a reverse-log taper pot, if wiring it "normally." You might ...
by MoonWatcher
21 Oct 2018, 15:38
Forum: Boutique Stompboxes dissected...
Topic: Lovepedal - Dover Drive [traced]
Replies: 54
Views: 21153

Re: Lovepedal - Dover Drive [traced]

It just dawned on me that there's no real reason to have the silicon Fuzz Face portion of the Dover Drive use PNP transistors, is there? Wouldn't it almost make more sense just to translate that circuitry to be NPN-based (2N3904)? Epiphany number two - it might be cool to have both a Fuzz Face and a...
by MoonWatcher
23 Dec 2016, 21:27
Forum: Boutique Stompboxes dissected...
Topic: J Rockett - The Dude (gut Shots)
Replies: 15
Views: 5295

Re: J Rockett - The Dude (gut Shots)

MGaburriJazzDude wrote:It's just me, or there are too many OP Amps in there?
If it's mostly copied from an existing design, then 3 op amps would be 'just right.' :P
by MoonWatcher
11 Oct 2016, 13:48
Forum: Amplifiers
Topic: 5 Watt Amp mods
Replies: 27
Views: 14414

Re: 5 Watt Amp mods

Did you try upgrading the OT? Did it make a noticeable difference? I can only speak for my experiences. I put a Weber WSE15 in a Blackheart Little Giant, and the improvement was unbelievably good. And whatever OT comes factory installed in the VHT Special Six (yes, installed from the factory :thumb...
by MoonWatcher
24 Sep 2016, 15:54
Forum: Boutique Stompboxes dissected...
Topic: Amptweaker - Tight Metal [traced]
Replies: 634
Views: 202252

Re: Amptweaker - Tight Metal [traced]

I have not yet tried running this at 18V, but James Brown in his demo showed it gave the pedal a more expansive, less compressed sound. Apropos to that, if I had to build this pedal again, I might add a 18V/9V switch with a voltage double in the circuit. I finally got around to building one a littl...
by MoonWatcher
24 Sep 2016, 14:11
Forum: Boutique Stompboxes dissected...
Topic: Bondi Effects - Sick As Overdrive
Replies: 24
Views: 13987

Re: Bondi Effects - Sick As Overdrive

It doesn't look like there are enough resistors alone to be the same as a Klon. But how about for starters just listing out their values? Some would have to match what the Klon has, right? So next, you look for what are probably pairings with some of those resistors with uncommon cap values, like 10...
by MoonWatcher
18 Sep 2016, 15:05
Forum: Boutique Stompboxes dissected...
Topic: Friedman BE-OD Pedal [traced]
Replies: 663
Views: 190759

Re: Friedman BE-OD Pedal [traced]

I don't doubt that the schematic bmxguitarsbmx created will work but, it's a lot of corrections and guesswork based on a schematic that was wrong to begin with so... ? who knows?? Ya never know, it may sound better than the BE100, give it a try and let us know. I myself am not satisfied until it's ...
by MoonWatcher
12 Sep 2016, 21:46
Forum: Boutique Stompboxes dissected...
Topic: Friedman BE-OD Pedal [traced]
Replies: 663
Views: 190759

Re: Friedman BE-OD Pedal [traced]

All ops should bias up. presence is dubious at best Assuming the schematic is now more close to what's actually going on than not, some of the familiarity in the sounds seems kind of apparent. The tightness control does appear to be similar to what Amptweaker is doing - a highpass filter that's als...
by MoonWatcher
07 Sep 2016, 21:54
Forum: Boutique Stompboxes dissected...
Topic: Friedman BE-OD Pedal [speculation thread]
Replies: 19
Views: 3390

Re: Friedman BE-OD Pedal

...no ground-shunted clippers. ...The SOT-23 series pair diode clipping is different... Interesting... Any chance the diodes are in the negative feedback loop of an op amp stage that's got the signal going thru the inverting input? That's actually pretty similar to hard clipping. The Runoffgroove.c...
by MoonWatcher
07 Sep 2016, 21:45
Forum: Boutique Stompboxes dissected...
Topic: Friedman BE-OD Pedal [speculation thread]
Replies: 19
Views: 3390

Re: Friedman BE-OD Pedal

here's Fred Briggs blog post on the lovepedal superlead (similar to the marshall guv'ner) with scheme :) . http://revolutiondeux.blogspot.com/2012/01/lovepedal-superlead.html here's a good demo of the lovepedal. the demo dude rolls his volume back at the end and it cleans up. Tones are similar. Add...
by MoonWatcher
07 Sep 2016, 21:33
Forum: Boutique Stompboxes dissected...
Topic: Friedman BE-OD Pedal [speculation thread]
Replies: 19
Views: 3390

Re: Friedman BE-OD Pedal

Pete Thorn's video shows a ton of knob turning. I also wouldn't be surprised if there is a gyrator in there for that resonant bass response: https://www.youtube.com/watch?v=NVotKbmlDic If there's anything active for the bass, it actually sounds kind of fixed. The bass response doesn't seem to compl...
by MoonWatcher
07 Sep 2016, 03:16
Forum: Boutique Stompboxes dissected...
Topic: Friedman BE-OD Pedal [speculation thread]
Replies: 19
Views: 3390

Re: Friedman BE-OD Pedal

I know you will probably think I'm crazy but have you checked out the schematic for the Danelectro Fab Metal? I know that the Fab Metal is like a simplified version of the Dano Fab Tone, which is like a simplified MT-2. No, I don't think you're crazy - it's that type of pre-gain into the primary ga...
by MoonWatcher
06 Sep 2016, 22:58
Forum: Boutique Stompboxes dissected...
Topic: Friedman BE-OD Pedal [speculation thread]
Replies: 19
Views: 3390

Re: Friedman BE-OD Pedal

Though the dynamics aren't as subdued as the shredmaster...This video shows that there is very little control over the gain. The pedal seems to be full bore or slightly less full bore. So I went back and listened to the audio in the video more closely, and don't think it's probably much of a Shredm...
by MoonWatcher
06 Sep 2016, 22:14
Forum: Boutique Stompboxes dissected...
Topic: Friedman BE-OD Pedal [speculation thread]
Replies: 19
Views: 3390

Re: Friedman BE-OD Pedal

The op-amp choice and LED clipping arrangements look very similar to a Marshall Shredmaster. Though the dynamics aren't as subdued as the shredmaster. https://www.youtube.com/watch?v=BeKQtf0QJCM This video shows that there is very little control over the gain. The pedal seems to be full bore or sli...
by MoonWatcher
25 Jul 2016, 23:50
Forum: Boutique Stompboxes dissected...
Topic: Wampler Sovereign Distortion [traced]
Replies: 36
Views: 22145

Re: Wampler Sovereign Distortion [traced]

Bloodman wrote:I have already traced this pedal
Please post your schematic from your tracing.
by MoonWatcher
24 Jul 2016, 16:36
Forum: Boutique Stompboxes dissected...
Topic: Wampler Sovereign Distortion [traced]
Replies: 36
Views: 22145

Re: Wampler Sovereign Distortion [traced]

The monolithic circuit and parameters of the sovereign are very similar with the pinnacle Indeed. It seems that there are a bit of similarities, in particular, with it and the Pinnacle LE. The latter was traced out in what I think was a Pinnacle II thread. So I went and dropped in the capacitor val...
by MoonWatcher
15 Jul 2016, 12:19
Forum: DIY Stompbox designs
Topic: THE OPAMPs WAR differences between different types of opamps
Replies: 36
Views: 15317

Re: THE OPAMPs WAR differences between different types of op

Uh, actually, you can measure well below 0.1% distortion and hear it too. There are limits of course, but lower than 0.1%. There are limits both to hearing and to measuring. As it turns out, people can hear some things that are pretty hard to measure, but that's just a limitation of existing test t...