Search found 58 matches

by x-tn
18 Dec 2023, 22:13
Forum: Modern Stompbox Effects (1975 - ...)
Topic: AMT BC-1 gut shot
Replies: 6
Views: 2361

Re: AMT BC-1 gut shot

From AMT website:
AMT BC-1.jpg
Frrom the manual:
AMT BC-1 block diagram.png
AMT BC-1 connections.png
AMT BC-1 connections.png (62.77 KiB) Viewed 1837 times
More gut shots and tracing attempt:
https://guitar-gear.ru/forum/topic/3701 ... unch-bass/
by x-tn
29 May 2023, 09:08
Forum: Pedal Debugging & Troubleshooting Support
Topic: VFE Windbag (delay/reverb) - volume drop/muffed sound when engaged
Replies: 3
Views: 451

Re: VFE Windbag (delay/reverb) - volume drop/muffed sound when engaged

Bobb_Lobblaw wrote: 22 May 2023, 01:42 The signal going in to R1 is strong..coming out the other leg it's severely dropped and muffled. I reflowed R1, I switched R1 out for another 220K and the same vol. drop/muffle happens.
IC1 may be faulty. Try another TL072 or a similar dual op-amp.

Also measure R24 (10 Megaohms).
by x-tn
03 Dec 2022, 19:43
Forum: Boutique Stompboxes dissected...
Topic: Loundsberry Nigel Touch Overdrive [traced]
Replies: 54
Views: 13697

Re: Loundsberry Nigel Touch Overdrive [traced]

Manfred wrote: 09 Sep 2021, 12:53 ...Also new is that the clipping diodes are now both germanium types, which are obviously matched.
Those are 1N60P schottky diodes.
by x-tn
23 Nov 2022, 02:31
Forum: Pimp-My-Cheap-Pedal
Topic: Boss GE-7 Mods
Replies: 135
Views: 132674

Re: Boss GE-7 Mods

I'm thinking about modding my GE-7 to add a clipping stage and make it essentially an overdrive with super control over the frequency response. Has anyone done this before? Any ideas on where to add a pair of clipping diodes? I've also thought about inserting a little transistor circuit (maybe an E...
by x-tn
30 Sep 2022, 12:08
Forum: Modern Stompbox Effects (1975 - ...)
Topic: Korg DTR-1000 Tuner advice please... [schematic]
Replies: 17
Views: 1820

Re: Korg DTR-1000 Tuner advice please... [schematic]

...Power and tuner lights come on. I've confirmed that the power supply, and mute relay circuit is all working correctly. ...There appeared to be a very distorted signal at the opamp pin 7 output. ... So swapped it for an LM258. Now I have an output again from the buffer circuit. But again its very...
by x-tn
16 Sep 2022, 09:33
Forum: Announcements and Forum Rules
Topic: Report Forum Problems and Make Forum Wishes Here...
Replies: 258
Views: 574917

Re: Forum Maintenance & Development News/Announcements

modman wrote: 14 Sep 2022, 21:51 ...all new stuff is always pro-silver only
I don't see 'pro-silver' in the seetings anymore. Board style only lists 'Boutique, Modern, Vintage'.
by x-tn
14 Sep 2022, 12:26
Forum: Announcements and Forum Rules
Topic: Report Forum Problems and Make Forum Wishes Here...
Replies: 258
Views: 574917

Re: Forum Maintenance & Development News/Announcements

I have nothing to do with that red fruit brand devices :)
I found the culprit, favicon is missing only on 'vintage' board style. Is it a conscious decision?
by x-tn
12 Sep 2022, 19:56
Forum: Announcements and Forum Rules
Topic: Report Forum Problems and Make Forum Wishes Here...
Replies: 258
Views: 574917

Re: Forum Maintenance & Development News/Announcements

Somehow missing for me. Tried 2 different web browsers.
Can you post the link to the icon?
Trying www.freestompboxes.org/favicon.ico results in "The requested URL was not found on this server."
by x-tn
02 Aug 2022, 17:30
Forum: Pedal Debugging & Troubleshooting Support
Topic: BYOC Bass Overdrive (DIY Clone) Fade in issue
Replies: 6
Views: 668

Re: BYOC Bass Overdrive (DIY Clone) Fade in issue

...Using an audio probe I listened at various points on the board while turning the effect on and off and here's what I found: Pin 2 of Q1: No fade. Pin 1 of Q1: Fade on. So I swapped out the transistor (I originally used a 2N3904) to a 2N5088. The problem still persists. Which one is 'Pin 1' of Q1...
by x-tn
25 Jul 2022, 23:35
Forum: Modern Stompbox Effects (1975 - ...)
Topic: Solidgold FX rosie
Replies: 4
Views: 940

Re: Solidgold FX rosie

Manfred wrote: 23 Jul 2022, 22:17 i searched the internet for the schematic but could not find it...
Is this a different thing?
SolidGoldFX Rosie schematics
by x-tn
10 May 2022, 17:55
Forum: Boutique Stompboxes dissected...
Topic: Smart People Factory - Red Threat [traced]
Replies: 22
Views: 4771

Re: Smart People Factory - Red Threat [traced]

Manfred wrote: 03 Apr 2022, 17:19 R1 appears two times on the original PCB...
You mean R6?
by x-tn
07 May 2022, 13:41
Forum: Boutique Stompboxes dissected...
Topic: Darkglass - Duality Fuzz Engine [traced]
Replies: 27
Views: 9983

Re: Darkglass - Duality Fuzz Engine [traced]

aionios wrote: 28 Nov 2021, 21:12 Here's the updated schematic
darkglass-duality-trace-schematic.png
I think the C16 should be connected at the other pin of the R20 (=IC6 pin3).
by x-tn
08 Nov 2021, 13:49
Forum: DIY Projects
Topic: Clearglass - some new glass for your bass [documentation]
Replies: 15
Views: 5088

Re: Clearglass - some new glass for your bass [documentation]

OK, thanks. On the traced VMT schematics it's connected to Vr, that's why I thought...
by x-tn
08 Nov 2021, 13:25
Forum: DIY Projects
Topic: Clearglass - some new glass for your bass [documentation]
Replies: 15
Views: 5088

Re: Clearglass - some new glass for your bass [documentation]

dylan159 wrote: 01 Oct 2021, 11:46
THE FIRST GAIN STAGE
On Mk2 schematic, I guess the C7 should be connected to Vr instead of GND.
by x-tn
07 Jul 2021, 18:38
Forum: Boutique Stompboxes dissected...
Topic: Roger Mayer - Purple Haze Limited Edition
Replies: 15
Views: 733

Re: Roger Mayer Purple Haze Limited Edition

"Roger Mayer on making the Purple Haze Octavia, a faithful recreation of the iconic pedal made famous by Jimi Hendrix" https://www.guitarworld.com/features/roger-mayer-purple-haze-octavia "The pedal that Jimi used to record Purple Haze with uniquely featured a hand-wound ferrite trans...
by x-tn
04 Jul 2021, 20:34
Forum: Pedal Debugging & Troubleshooting Support
Topic: How to Mod Rat distortion pot to be less sensitive in super low range
Replies: 4
Views: 1367

Re: How to Mod Rat distortion pot to be less sensitive in super low range

I basically use my rat between 8 and 8:30 o'clock - or right above zero on the the pot sweep... This is the only part of the pot range I use, so I'm wondering if there is any modification I can do to get more sweep in this range... Replace the distortion pot with a A10k pot and try. If the maximum ...
by x-tn
24 Jan 2021, 16:37
Forum: Modern Stompbox Effects (1975 - ...)
Topic: Boss - TW-1 issue
Replies: 8
Views: 1714

Re: Boss TW-1 issue

...the points show no voltage in relation to the ground. 9V is on many points in relation to the negative battery terminal however. I was just questioning why voltage tests were showing relative to negative circuits rather than ground. I do appreciate the ideas. There is a 470ohm resistor and a dio...