Building an Aleph 3. Should I bypass the feedback capacitor? - diyAudio
Go Back   Home > Forums > Amplifiers > Pass Labs

Pass Labs This forum is dedicated to Pass Labs discussion.

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 24th February 2010, 06:08 AM   #1
GregH2 is offline GregH2  Australia
diyAudio Member
 
GregH2's Avatar
 
Join Date: Oct 2009
Default Building an Aleph 3. Should I bypass the feedback capacitor?

Hi All,

I'm just wondering if it would be a good idea to bypass the 220uF feedback electrolytic with a 22uF electro and 1-2uF film cap. Would there be any advantage to doing so?

Additionally, what are the pros and cons of using a larger or smaller feedback cap value? Would using a 470uF cap improve the bass response? Interested to hear your thoughts.

Regards,

Greg.
  Reply With Quote
Old 24th February 2010, 10:47 AM   #2
diyAudio Member
 
Join Date: Feb 2007
Location: Tashkent
Quote:
Originally Posted by swordfishy View Post
Hi All,

I'm just wondering if it would be a good idea to bypass the 220uF feedback electrolytic with a 22uF electro and 1-2uF film cap. Would there be any advantage to doing so?

Additionally, what are the pros and cons of using a larger or smaller feedback cap value? Would using a 470uF cap improve the bass response? Interested to hear your thoughts.

Regards,

Greg.
Usually, two smaller electrolytics in parallel is better than one bigger, becouse of parasitic effects. If the electrolytics are not Black Gates, decent polypropilene film shunt for them could be 1 ... 10 uF. 10uF is better than 1uF, but hardly practical because of size.
  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
bypass output capacitor wicked1 Pass Labs 8 22nd August 2009 09:49 PM
Question about cathode bypass capacitor: rockgardenlove Tubes / Valves 4 24th October 2008 08:34 AM
bypass capacitor omni Parts 5 17th July 2006 12:03 PM
bypass capacitor source omni Parts 1 16th July 2006 08:28 PM
Aleph 5 DC feedback capacitor (C5) reverse polarized jwb Pass Labs 3 1st October 2003 06:20 PM


New To Site? Need Help?

All times are GMT. The time now is 11:07 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