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Old 30th August 2004, 01:42 AM   #1
moofer is offline moofer  New Zealand
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Question excessive caps

been crawling the threads for months reading and researching my findings here. I have a query for the all knowing gurus of DIYAudio.
im currently in the process of building a 4 amplifier amp for biamping some HT speakers im using kitset designs sc480 and eti480 these modules require 40-0-40v rails i recenlty acquired two 78000 uF 40/50 Volt DC caps i would like youre help in designing a power supply to run all four amplifier modules.
will post schematic of prototype soon.

thanks in advance for your help
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Old 30th August 2004, 02:33 AM   #2
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You're pushing the envelope with the voltage rating of those caps if the rails are going to be 40 volts.
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Old 30th August 2004, 09:40 AM   #3
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was wondering that. ive also got a fack load of 2200uf 63v caps can just parrallel them together. my main query was what am i gonna need in the way of PSU to run 4 amp modules apart from a high VA rating transformer.??
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Old 30th August 2004, 12:37 PM   #4
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I'd go for separate transformers/PSs for each 'channel' so to speak (one for two amps).

See here:

http://www.tnt-audio.com/clinica/ssps1_e.html (this might contain 'a litlle' b******** but it's a good read nonetheless.

http://sound.westhost.com/power-supplies.htm
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Old 30th August 2004, 09:48 PM   #5
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read that and discussed it with that a mate .he said most of it was BS too.prob why i disregarded it. so two independant psu/transformer for each side so prob 300va per side .
no way at all i could use these biggie caps

cheers for the help gurus
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Old 31st August 2004, 01:01 AM   #6
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If your Buddy says that Rod Elliot's article was BS he don't know anything about electronics and should not be listened to.
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Old 31st August 2004, 01:39 AM   #7
moofer is offline moofer  New Zealand
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not rod elliots page the tnt audio one .
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Old 1st September 2004, 04:12 AM   #8
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read and comprehended as much as i could of this article was wondering if regulating the psu is really going to be worth the cost and time involved.

http://sound.westhost.com/power-supplies.htm
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