Search found 63 matches

by alltrax
13 Oct 2020, 13:47
Forum: Pedal Debugging & Troubleshooting Support
Topic: Mesa Flux Drive (vero) low output
Replies: 14
Views: 3541

Re: Mesa Flux Drive (vero) low output

Right, I will socket R3 and C4 and try different combos. On a side note, I compared this schematic with the one from pedalpcb : WRT your previous remark concerning the resistors and capacitors in serie, on pedalpcb's schem the 100n following the 1µ is omitted, and there is a 43k for 10k + 33k in ser...
by alltrax
13 Oct 2020, 07:53
Forum: Pedal Debugging & Troubleshooting Support
Topic: Mesa Flux Drive (vero) low output
Replies: 14
Views: 3541

Re: Mesa Flux Drive (vero) low output

Thank you Deltafred, your explanations help me to understand how things work. As mentionned in my previous post, I had a wrong resistor value, R18 was 4k7 instead of 47k so according to the formula it was indeed affecting the gain at this stage. No I have plenty of output volume with the right R18 v...
by alltrax
12 Oct 2020, 19:04
Forum: Pedal Debugging & Troubleshooting Support
Topic: Mesa Flux Drive (vero) low output
Replies: 14
Views: 3541

Re: Mesa Flux Drive (vero) low output

Ok it works :) Wrong resistor value....4k7 instead of 47k (R18 between IC2 pins 1 and 2). I previously checked with color codes and both are almost identical. Knowing now that the problem was around IC2 first opamp, I checked with my DMM and bingo ! A lot of output volume now (I'll replace the pot w...
by alltrax
12 Oct 2020, 07:23
Forum: Pedal Debugging & Troubleshooting Support
Topic: Mesa Flux Drive (vero) low output
Replies: 14
Views: 3541

Re: Mesa Flux Drive (vero) low output

deltafred wrote: 11 Oct 2020, 23:30 Just a WAG but did you remember to put the link under the TL072?

Not having the +4.5v bias on pin 3 could cause the opamp to do strange things.
Yes, the link is there and the voltages look good
by alltrax
11 Oct 2020, 17:09
Forum: Pedal Debugging & Troubleshooting Support
Topic: Mesa Flux Drive (vero) low output
Replies: 14
Views: 3541

Re: Mesa Flux Drive (vero) low output

Ok, so the 1st thing I did is to check all what deltafred suggested. Actually I already did it 3 or 4 times, but this time with fresh eyes, under a magnifying light for the trace side. I didn't see anything wrong, trace cuts are good (I use a 3.5mm drill bit and always check and remove the small cop...
by alltrax
10 Oct 2020, 08:50
Forum: Pedal Debugging & Troubleshooting Support
Topic: Mesa Flux Drive (vero) low output
Replies: 14
Views: 3541

Re: Mesa Flux Drive (vero) low output

Thanks for moving the thread in the right section The G.
I'll try that and will report back, thank you
by alltrax
09 Oct 2020, 10:41
Forum: Modern Stompbox Effects (1975 - ...)
Topic: Mesa Flux Drive [traced]
Replies: 9
Views: 10898

Re: Mesa Flux Drive [traced]

Ok, there you are, thanks
Image
by alltrax
08 Oct 2020, 15:32
Forum: Modern Stompbox Effects (1975 - ...)
Topic: Mesa Flux Drive [traced]
Replies: 9
Views: 10898

Re: Mesa Flux Drive [traced]

deltafred wrote: 08 Oct 2020, 14:27 Can you post a schematic as well, a vero layout doesn't tell us much.
You have the link to the pdf just below the pics in the opening post
by alltrax
08 Oct 2020, 08:45
Forum: Modern Stompbox Effects (1975 - ...)
Topic: Mesa Flux Drive [traced]
Replies: 9
Views: 10898

Re: Mesa Flux Drive [traced]

I built this pedal on vero according to this layout : https://2.bp.blogspot.com/-jv1X87w070A/V6HR-TjEzLI/AAAAAAAAA2I/KlB5Jsyikv8bWOhL8uMPoTtYT6jVNG8zwCLcB/s1600/Flux.png https://tagboardeffects.blogspot.com/search?q=flux+drive I believe it follows the schematic posted here in the 1st post. Everythin...
by alltrax
12 Nov 2018, 13:22
Forum: Boutique Stompboxes dissected...
Topic: Pete Cornish - NG-2
Replies: 165
Views: 61598

Re: Pete Cornish - NG-2

roseblood11 wrote:Who will post the first vero layout? Should fit in a 1590B
anders posted one at Guitar FX Layouts, not verified
http://guitar-fx-layouts.42897.x6.nabbl ... 44578.html
by alltrax
29 Sep 2017, 07:57
Forum: Modern Stompbox Effects (1975 - ...)
Topic: Diezel VH4 Pedal [schematic]
Replies: 284
Views: 168915

Re: Diezel VH4 Pedal [schematic]

Optical wrote:I think i'll try the other configuration anyway to see how it sounds
Let us know :thumbsup
by alltrax
27 Sep 2017, 07:44
Forum: Modern Stompbox Effects (1975 - ...)
Topic: Diezel VH4 Pedal [schematic]
Replies: 284
Views: 168915

Re: Diezel VH4 Pedal [schematic]

Bummer, just finished building two and the output is messy and lots of oscillation and motorboating :( I must have stuffed something up, time to start tracing with a scope! Actually im just using 9v to power them at the moment. Would a low voltage or current supply ability cause this? Did you put t...
by alltrax
08 Sep 2017, 12:46
Forum: DIY Projects
Topic: Box of Hall - Accutronics BTDR-2 Reverb [documentation]
Replies: 65
Views: 16214

Re: Box of Hall - Accutronics BTDR-2 Reverb [documentation]

I built it without the damp control (center position 2x5k resistors) and like it very much, but it's a bit on the bright side comparing to my dry signal.
Is there somewhere on the schematic I can tweake that ? (damp pot had 0 effect on my build)
Thanks
by alltrax
15 Aug 2017, 20:19
Forum: Modern Stompbox Effects (1975 - ...)
Topic: Diezel VH4 Pedal [schematic]
Replies: 284
Views: 168915

Re: Diezel VH4 Pedal [schematic]

But I have no sound in bypass and the indicator led does not light. I checked with my DMM and there is nowhere on the 3pdt where I have continuity with the output (front amp output) It should be something stupid I guess... ...actually there is no sound on purpose - if you use the output which is me...
by alltrax
15 Aug 2017, 18:08
Forum: Modern Stompbox Effects (1975 - ...)
Topic: Diezel VH4 Pedal [schematic]
Replies: 284
Views: 168915

Re: Diezel VH4 Pedal [schematic]

And here is mine. I know it's not very smart to label the pedal with the brand of the original but this one is for me I don't intend to sell it http://nsm07.casimages.com/img/2017/08/15//17081508290514005915221620.jpg http://nsm07.casimages.com/img/2017/08/15//17081508291214005915221621.jpg http://n...
by alltrax
14 Aug 2017, 10:11
Forum: Modern Stompbox Effects (1975 - ...)
Topic: Diezel VH4 Pedal [schematic]
Replies: 284
Views: 168915

Re: Diezel VH4 Pedal [schematic]

There are 2 mistakes in by BOM above : R26 is 1k instead of 110 ohms, and R28 is 100 ohms instead of 1k There are also a few in 440hz's one, I let you check I finished building Bajaman's board and wow, what a great distortion, very different from the BE-OD as expected, sounds killer, well worth havi...
by alltrax
14 Aug 2017, 07:57
Forum: Boutique Stompboxes dissected...
Topic: Friedman BE-OD Pedal [traced]
Replies: 670
Views: 299609

Re: Friedman BE-OD Pedal [traced]

On my vero build I shielded the input and upped the 120p to 2n2
Now there is absolutely zero background noise, even with gain and treble full opened, no hum, no wistle, no shhhhh, only great distortion :thumbsup
by alltrax
14 Aug 2017, 07:55
Forum: Boutique Stompboxes dissected...
Topic: Friedman BE-OD Pedal [traced]
Replies: 670
Views: 299609

Re: Friedman BE-OD Pedal [traced]

I find all the tone controls very useful, except perhaps that the treble and presence controls are not very different. The Tight control is the most important one, IMHO. It enables you to tweak the sound from fat for relativly low-gain sounds, to tight hot-rodded high-gain sounds. The bass control ...
by alltrax
07 Aug 2017, 15:13
Forum: Boutique Stompboxes dissected...
Topic: Friedman BE-OD Pedal [traced]
Replies: 670
Views: 299609

Re: Friedman BE-OD Pedal [traced]

Thanks psychepool, that must be a tight fit
The C12 change from 120 to 470p does not change the sound (at least to my ears)
by alltrax
07 Aug 2017, 12:35
Forum: Boutique Stompboxes dissected...
Topic: Friedman BE-OD Pedal [traced]
Replies: 670
Views: 299609

Re: Friedman BE-OD Pedal [traced]

alltrax, thanks for the clips of your vero build! At 1:29-1:30 between setting 2 and 3 there seems to be quite a bit of noise! I was playing sitting on the floor just in front of the amp :wink: I'd like to verify traces also (maybe something wrong with the PCB), but the Buggs boards are dark and a ...