Go Back   TalkBass Forums > Bass Guitar Forums > Bass Guitar Forums > Effects [BG]
Register Rules/FAQ/CUP Members List Search Today's Posts Mark Forums Read



Supporting Membership
Thank You

Latest Supporting Member
Donate to Upgrade Today

Reply
 
Thread Tools Search this Thread
  #1  
Old 08-11-2008, 04:58 PM
Registered User
 
Join Date: Nov 2004
Location: Santa Cruz CA
new pedal- bypass switch popping noise

Sign in to disble this ad
so- i just got a robotfactory meatwad in the mail this afternoon- and i have a problem with the bypass switch. there is a pretty loud popping noise when clicking the effect on and off- but only when placed toward the end of the signal chain.

power supplies and cables are all fine. i have 9 effects between bass and preamp- and would like the envelope filter 9th. i put it 1st- 4th- 8th and 9th. 1st and 4th are fine. last 2 are noisy- 9th much more so. putting it after a zvex tremorama makes things much worse for some reason.

testing everything one pedal at a time will take a while and require dealing with lots of velcro and wires- so if theres an easy fix for this let me know. thanks.
  #2  
Old 08-11-2008, 05:55 PM
Registered User
 
Join Date: Jun 2005
Location: Canberra, Australia
This is par for the course with true bypass pedals - offset DC voltages present on different switch terminals suddenly equalise when you hit the switch, manifesting as an audible "thump".

Several methods exist, none are perfect. The simple approach is to try adding resistors to the input and output jacks to 'drain away' the leaking DC currents that cause the offset voltages. Another approach might be to upgrade DC blocking capacitors inside pedals - sounds like the Zvex might benefit from this treatment.

This phenomenon is well understood, but there are no 'silver bullet' solutions.
__________________
niftydog

"My feet itch." Mike Patton
Reply


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

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

Follow TalkBass on Twitter   Visit TalkBass on Facebook  

All times are GMT -6. The time now is 03:57 PM.




Copyright 2011 Talk Music Group Inc. All rights reserved.
Play guitar? Visit our new sister site TalkGuitar.com [beta]
Powered by vBulletin® Version 3.6.12
Copyright ©2000 - 2012, Jelsoft Enterprises Ltd.