Print Page - Darkside sustain problem

Title: Darkside sustain problem
Post by: mladen on August 31, 2012, 11:23:33 PM

First, I want to say hello to everyone, I am new on this forum, and also new in building effect pedals. ;D

I made a darkside pedal on veroboard, i had problem etching board so I found verified version of darkside on veroboard, but I have problem - sustain is too low. I think the color of tone is good, potentiometers works, but when I turn sustain pot on maximum, I get only light overdrive, less gain then I get on Tubescreamer ;D

I checked everything and it seems ok, so I hope someone can help me with some idea?

Thanks. :)

Title: Re: Darkside sustain problem
Post by: mladen on September 01, 2012, 01:15:17 PM

I checked one more time, and all values match the layout, there is just differences in resistors watage - some resistors are 1W instead of 1/4, but I think that is not the problem

There didn't notice any other problem, so I hope someone can help me to find out what's wrong... :-\

Title: Re: Darkside sustain problem
Post by: gtr2 on September 01, 2012, 01:34:38 PM

You might get more help if you post a link to the vero you used.

Unfortunately it may still be hard if there is not schematic accompanying the vero

Josh

Title: Re: Darkside sustain problem
Post by: mladen on September 03, 2012, 12:02:14 PM

Quote from: gtr2 on September 01, 2012, 01:34:38 PM
You might get more help if you post a link to the vero you used.

Unfortunately it may still be hard if there is not schematic accompanying the vero

Josh

You are right, I forgot to post a link to vero layout, here it is:

http://www.sabrotone.com/?p=2990

I think it is made by the same schematic as PCB layout.

Mladen

Title: Re: Darkside sustain problem
Post by: marauder on September 03, 2012, 04:30:24 PM

Whats the forward voltage of the diodes?

I've found with ones of less than 250mV, the Darkside had very little output, but had a nice tone. The ones I used at around 320mV were much more usable.

Title: Re: Darkside sustain problem
Post by: mladen on September 04, 2012, 09:38:09 AM

Quote from: marauder on September 03, 2012, 04:30:24 PM
Whats the forward voltage of the diodes?

I've found with ones of less than 250mV, the Darkside had very little output, but had a nice tone. The ones I used at around 320mV were much more usable.

Thanks for suggestion, I will check that. :)

Title: Re: Darkside sustain problem
Post by: mladen on September 04, 2012, 09:59:09 AM

I forgot to mention, here are substitutions I use:

-Two pots are linear instead of log
-Two resistor are 1,2K instead of 1K

I don't think this could make any difference, but I didn't use socket for transistors and diodes, so I afraid heat could damage them?

madbeanpedals::forum

Projects => Tech Help - Projects Page => Topic started by: mladen on August 31, 2012, 11:23:33 PM