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Old 05-09-2012, 10:12 AM
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lazzer408 lazzer408 is offline
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Default Re: Check out what I built this weekend!

Originally Posted by VOLKSWAGNER420 View Post
No not yet. They sell them at the shack. I am building a pre-amp for it (A good one with a tube) and maybe a few other bells an whistles. Home made stuff is only awesome if it is as good or better than what you could buy! So what was the verdict on those numbers I gave you? Is it really pushing 350W form such a small package?
With a +/-65V supply into an 8ohm speaker = 200W (rms)
With a +/-50V supply into a 8ohm speaker = 120W (rms)
With a +/-50V supply into a 4ohm speaker = 240w (rms)

If they're claiming 350w, that's peak. Don't forget to sink those transistors.

Radioshack sells DC/DC converters?

If you can find one cheap, grab an old Jenson 4ch amp like the one shown below. The power supply in those are seperated. Handy for powering little projects like yours off of a 12v source. They are typically +/-35 to 45v output but can be modified for other voltages.

Doc: "Are you saying that the problem is the dia of the shaft or the small length and shape?"
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Old 05-09-2012, 07:08 PM
Join Date: Apr 2012
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Default Re: Check out what I built this weekend!

Yeah I was going to wait till I put the other one together and attach both to a common heatsink, and if the shack doesen't have 'em ebay does!
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amplifier, pre-amp

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