Go Back   Home > Forums > >
Home Forums Rules Articles diyAudio Store Blogs Gallery Wiki Register Donations FAQ Calendar Search Today's Posts Mark Forums Read

Chip Amps Amplifiers based on integrated circuits

Gainclone with DC-offset problems
Gainclone with DC-offset problems
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
Thread Tools Search this Thread
Old 28th May 2004, 09:58 PM   #11
seve is offline seve
diyAudio Member
Join Date: Sep 2002
Location: Denmark
Hi Jan,

Thanks for the help. I will try to get a non-polar cap to the input.

Though my preamp already has a output cap I thought that was enough, but probably not...

Still is it normal that there is such a big difference between using the gainclone with a passive volume where I get DC 20-50mv and using a preamp and getting up to DC 1V both places using a 10K pot?

  Reply With Quote
Old 28th May 2004, 11:01 PM   #12
ped is offline ped  United States
diyAudio Member
Join Date: Apr 2003
Location: PA
Hi Seve,

If I understand your post correctly you have stable and acceptable levels of dc offset with the gainclone by itself. When you connect your preamp and source you get large and varying levels of dc offset.

When you connect the preamp and source, are you playing music when you measure the dc offset? If so, try measuring the offset with source and preamp connected but no music playing and see what you get.

Check out this thread here:


I'm certainly no expert, and someone please correct me if I'm wrong, but I don't think you should measure the dc offset with music playing as it modulates the dc offset and produces erroneous measurements.

Good Luck!
  Reply With Quote


Gainclone with DC-offset problemsHide 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

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Problems with DC offset Buhl Chip Amps 32 6th February 2006 06:51 AM
Offset problems, again sangram Chip Amps 21 12th January 2006 02:08 PM
DC offset problems with leach amp wrl Solid State 62 3rd March 2004 12:28 AM
gainclone problems (dc offset, no sound) damitamit Chip Amps 3 6th September 2003 05:24 AM

New To Site? Need Help?

All times are GMT. The time now is 03:44 AM.

Search Engine Optimisation provided by DragonByte SEO (Pro) - vBulletin Mods & Addons Copyright © 2017 DragonByte Technologies Ltd.
Resources saved on this page: MySQL 15.79%
vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2017 DragonByte Technologies Ltd.
Copyright ©1999-2017 diyAudio