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

large caps/torroid for super amp?
large caps/torroid for super amp?
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 2nd April 2006, 09:26 PM   #1
creyc is offline creyc  United States
diyAudio Member
Join Date: Feb 2006
Default large caps/torroid for super amp?

I'm building several Leach Superamps and would like to hear any recommendations for a good capacitor for the power supply. I'm planning a 60-0-60 transformer so total rail voltage wont be over 100v. I want something very reliable and high quality, since the goal of this amp is for many years of service. I think i want around 20,000 uF total, it's a mono amp.

I also need the aforementioned transformer. I've gotten a quote from http://avellindberg.com/ but I'm not too sure about their quality. They are certainly inexpensive though. Does anyone have a good recommendation for a quality high-current toroid? I'm looking for at least 60-0-60, center tapped.
  Reply With Quote
Old 2nd April 2006, 10:56 PM   #2
chipco3434 is offline chipco3434  United States
diyAudio Member
Join Date: Feb 2004
Location: Racine, Wisconsin
Avel... audiophile quality? I wouldn't know that for sure.

The quality is very good and the value is great. They're quiet and reliable. They ship on time and the product arrives in one piece.

I am certain you could spend 3x the price. I am also certain I couldn't hear the difference.
  Reply With Quote
Old 3rd April 2006, 02:53 AM   #3
Ed LaFontaine is offline Ed LaFontaine  United States
diyAudio Member
Ed LaFontaine's Avatar
Join Date: Feb 2004
Location: where the Appalachians rise from the Blue Grass
Antek offers transformers on ebay.
2 X56V & 2 X 63V, both @ 800Va

  Reply With Quote
Old 3rd April 2006, 01:46 PM   #4
AndrewT is offline AndrewT  Scotland
diyAudio Member
Join Date: Jul 2004
Location: Scottish Borders
I recommend +-2mF/Apk.

For an output of 80Vpk into 8ohm that is 10Apk. This would need about +-20mF driving 8ohm.

For 4ohm duty you need to double this to +-40mF.

Some recommend as high as 3mF/Apk. I have seen 10W/mF recommended.
regards Andrew T.
  Reply With Quote
Old 3rd April 2006, 06:01 PM   #5
Flodstroem is offline Flodstroem  Norway
diyAudio Member
Join Date: Sep 2004
Location: Norway
Default Avel and RIFA, ok.

These capacitors will last longer than the amp, RIFAs Long life can electrolytics. Best available electrolytics, recommendable:


85C:, y.d. 75 x L 115 mm Irac /100Hz: 25.4A (85 degrees) ESR mohm/100kHz: 6. # PEH169PU522VMU2

105C: PEH169PV5220QU2 dimension: y.d. 75 x L 145 mm

Regarding Avel, they are a former supplier of transformers to KRELL, should have the experience for to make good transformer for audio application.

  Reply With Quote


large caps/torroid for super amp?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

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Large caps Stuart Easson Swap Meet 26 25th March 2009 04:57 AM
small crack in torroid!!future of torroid? sagarverma Power Supplies 24 8th November 2005 05:22 PM
Paralleling small value caps with large value PS caps xyrium Power Supplies 16 14th October 2005 05:06 PM
Large PSU caps for sale. jleaman Swap Meet 3 23rd October 2004 05:28 AM
Adding large caps? Rino odorico Everything Else 6 13th September 2002 11:16 PM

New To Site? Need Help?

All times are GMT. The time now is 04:24 PM.

Search Engine Optimisation provided by DragonByte SEO (Pro) - vBulletin Mods & Addons Copyright © 2017 DragonByte Technologies Ltd.
Resources saved on this page: MySQL 16.67%
vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2017 DragonByte Technologies Ltd.
Copyright ©1999-2017 diyAudio