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Old 31st August 2008, 06:32 AM   #1
llmobll is offline llmobll  United States
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Default Multiple Channel gainclone (transformer question)


I'm trying to figure out how to power my monster 7.1 gainclone beast. I haven't mapped out the power (watts) per channel part out, but i was wondering..

Will a single retifier work for all 8 channels? Reason I ask is i'm trying to convert my 2 channel amp to multiple channels, and i'm not entirely sure if i should use a retifier for every 2 channels.

might sound dumb, but i'm curious.

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Old 31st August 2008, 09:26 AM   #2
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You want to know, if there is a rectifier big enough for a power handling that you haven't defined yet?

Well - don't worry. There are recifiers big enough for any amplifier that you can design. Look here for an example. That thing is good for 2000A at 250kV.
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Old 31st August 2008, 10:00 AM   #3
AndrewT is offline AndrewT  Scotland
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you can run multiple channels inside one amplifier chassis. I wouldn't.
I like the amps beside the speakers, with very short speaker cables resulting in long interconnects at line level.

Do you have a single rectifier fed by a centre tapped transformer or dual rectifiers fed from dual secondaries?
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Old 3rd September 2008, 03:56 PM   #4
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MY input:

This is going to be used for movies? Depending on your standard listening volume one 500VA transformer should be good. 600VA should be more than good enough.

Build a decent dual bridge rectifier circuit with a decent 2 winding toroidal.

Read through this web page:
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Old 4th September 2008, 12:41 PM   #5
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for my 8-chennel amplifier basedon lm4780, i am using a 800 va transformer with dual rectifier units (one for each channel).

And the system is running fine in terms of normal heating of rectifier diodes and transformer.
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