help in changing cap values for a disto stompbox - diyAudio
Go Back   Home > Forums > Design & Build > Parts

Parts Where to get, and how to make the best bits. PCB's, caps, transformers, etc.

Please consider donating to help us continue to serve you.

Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving
Reply
 
Thread Tools Search this Thread
Old 21st June 2008, 05:47 PM   #1
diyAudio Member
 
Join Date: Feb 2008
Default help in changing cap values for a disto stompbox

Hi,

I hope this is the right forum to post, if not just tell me.

I'm building this:

Click the image to open in full size.

and I just noticed I don't have any 0.1 uF cap. My guess is that both 0.1 uF caps are used to filter out DC voltage, so I plan to replace them with 1 uF ones. As I'm quite new at DIY audio electronics though, maybe I'm missing something.

So, what do you think? Is my guess correct ? Will the stronger cap values cause the universe to implode ?

Thanks in advance for your answers.
  Reply With Quote
Old 22nd June 2008, 08:09 AM   #2
Nordic is offline Nordic  South Africa
diyAudio Member
 
Nordic's Avatar
 
Join Date: Sep 2005
They also form a lowpass filter, I would not venture too far from the original values... just about any broken electronics (pre surface mount) should yield a few 100n caps... they might be marked 104, or 100n or 0.1u
  Reply With Quote
Old 22nd June 2008, 02:44 PM   #3
diyAudio Member
 
Join Date: Feb 2008
Thanks for the answer. I have finally found a broken radio with a few cermacic caps labelled 104M, I guess they will do the trick.

About the lowpass filter I wasn't sure since there was no resistor with the cap (all the low and highpass filters I've seen in schematics have a resistor to ground). I'm guessing the resistance between base and emitter of Q1 plays the part of the resistor in the filter, ,am I right ?

Thanks again.
  Reply With Quote
Old 22nd June 2008, 03:26 PM   #4
impsick is offline impsick  United States
diyAudio Member
 
impsick's Avatar
 
Join Date: Dec 2006
Location: Huntington Beach, Ca
you might be able to get away with .082uf if you have that value.
__________________
"Nothing happens for a reason. There are just reasons why things happen." Quote me on that. http://stores.ebay.com/AudioGrade?_rdc=1
  Reply With Quote

Reply


Hide this!Advertise here!
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
My DIY stompbox Dr. Zoidberg Instruments and Amps 7 17th December 2010 08:17 PM
Stompbox problem lukeareid Instruments and Amps 0 16th December 2008 02:56 PM
changing (de)coupling cap values Klimon Tubes / Valves 14 25th April 2005 09:33 AM
Changing ZEN to Ret. of ZEN boq Pass Labs 1 28th May 2004 10:30 AM
Changing BF's for MJE's Bensen Solid State 2 27th May 2003 05:39 AM


New To Site? Need Help?

All times are GMT. The time now is 06:17 AM.


vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2014 DragonByte Technologies Ltd.
Copyright 1999-2014 diyAudio

Content Relevant URLs by vBSEO 3.3.2