Pearl - bypass caps yes or no? - 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 26th September 2003, 03:43 PM   #1
Boban is offline Boban  Canada
diyAudio Member
 
Boban's Avatar
 
Join Date: Feb 2003
Location: Toronto
Default Pearl - bypass caps yes or no?

Hi ,
I am wondering if 0.1uf film bypass caps at each of the 10000uf PS caps will help? What about C1, C2 and C3 on the board (they are 10000uF as well).
If yes, can anyone recommend good but not expensive caps?

Regards
Boban
  Reply With Quote
Old 28th September 2003, 03:22 AM   #2
diyAudio Member
 
Join Date: Dec 2002
Location: Houston
Default Re: Pearl - bypass caps yes or no?

Quote:
Originally posted by Boban
Hi ,
I am wondering if 0.1uf film bypass caps at each of the 10000uf PS caps will help? What about C1, C2 and C3 on the board (they are 10000uF as well).
If yes, can anyone recommend good but not expensive caps?

Regards
Boban

I think the large caps after the regulator have more effect on the sound. But I bypassed all 7 large caps in mine.
For cheap, good quality these stacked film are hard to beat. The 1 ufd, 100v ones shown are available locally and are 1.00 each at one store and 0.25 at another.
The caps are very low impedance.

George
Attached Images
File Type: jpg caps.jpg (9.2 KB, 386 views)
  Reply With Quote
Old 28th September 2003, 03:24 AM   #3
diyAudio Member
 
Join Date: Dec 2002
Location: Houston
Default Bottom of Pearl Boards

Looks ugly, but just use long standoffs.
Attached Images
File Type: jpg backside of pearl boards.jpg (28.6 KB, 404 views)
  Reply With Quote
Old 28th September 2003, 03:26 AM   #4
diyAudio Member
 
Join Date: Dec 2002
Location: Houston
Default Stuffed Pearl Phono Boards

I even used a 0.33 stacked film in the EQ section.

George
Attached Images
File Type: jpg stuffed pearl boards.jpg (40.7 KB, 390 views)
  Reply With Quote
Old 28th September 2003, 03:58 PM   #5
Boban is offline Boban  Canada
diyAudio Member
 
Boban's Avatar
 
Join Date: Feb 2003
Location: Toronto
Hi George,
Thanks for the reply. I had the same idea in mind before I posted the question. Glad I am not alone. Do you know where I can order these caps online? Not sure that I can find them locally (to be honest I don't have much time to go around and look).
btw. Looking at your boards (nice job) I noticed you are using electrolytic for coupling C9; end even 2 caps is series. Why is that? Never seen that before. Care to explain?
Regards
Boban
  Reply With Quote
Old 28th September 2003, 04:11 PM   #6
jam is offline jam  United States
diyAudio Member
 
jam's Avatar
 
Join Date: May 2001
Location: Auburn, CA, USA
George,

Are those polycarbonate? I have been looking for some.

Regards,
Jam
  Reply With Quote
Old 28th September 2003, 06:39 PM   #7
diyAudio Member
 
Join Date: Dec 2002
Location: Houston
[QUOTE]Originally posted by jam
[B]George,

Are those polycarbonate? I have been looking for some.

Regards,
Jam

Jam,
I am not sure of the dielectric. I think they are the same as MKT caps.
If you want me to get you some of the 1 ufdl, 100v for 25c each. Shoot an email. They have hundreds.
George
  Reply With Quote
Old 28th September 2003, 06:44 PM   #8
diyAudio Member
 
Join Date: Dec 2002
Location: Houston
Quote:
Originally posted by Boban
Looking at your boards (nice job) I noticed you are using electrolytic for coupling C9; end even 2 caps is series. Why is that? Never seen that before. Care to explain?
Regards
Boban

The final coupling cap is a pair of 47 ufd 50v Elna Silmics connected tail to tail. This is a poor mans BG NX.
I prefer the sound of good quality electrolytics to very large value film caps. Once you get above 4-5 ufd the electrolytics just seem less colored to my tin ears.
I have no idea on an online source for these caps. They are not insulated on the end caps. That limits the commercial application.

George
  Reply With Quote
Old 28th September 2003, 08:32 PM   #9
diyAudio Member
 
Join Date: Dec 2002
Location: Houston
Quote:
Originally posted by Boban
Looking at your boards (nice job) I noticed you are using electrolytic for coupling C9; end even 2 caps is series. Why is that? Never seen that before. Care to explain?
Regards
Boban

The final coupling cap is a pair of 47 ufd 50v Elna Silmics connected tail to tail. This is a poor mans BG NX.
I prefer the sound of good quality electrolytics to very large value film caps. Once you get above 4-5 ufd the electrolytics just seem less colored to my tin ears.
I have no idea on an online source for these caps. They are not insulated on the end caps. That limits the commercial application.

George
  Reply With Quote
Old 29th September 2003, 01:30 AM   #10
Boban is offline Boban  Canada
diyAudio Member
 
Boban's Avatar
 
Join Date: Feb 2003
Location: Toronto
George,
how about some for me as well? Please contact me off-line if you agree. Thanks
Boban
bsn_nikolic@yahoo.com
  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
Best Bypass Caps? Ben Reginato Multi-Way 1 2nd March 2008 01:58 PM
bypass caps for bypassing mylar caps? crippledchicken Multi-Way 4 27th February 2008 04:24 AM
Bypass caps on crossover caps... :D quickshift Multi-Way 19 27th November 2005 12:59 PM
PSU bypass caps Sunsun22 Chip Amps 2 30th August 2004 01:02 PM
PSU Bypass Caps JoeBob Solid State 1 18th February 2002 09:00 AM


New To Site? Need Help?

All times are GMT. The time now is 10:39 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