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From: emrath@uiuccsb.UUCP
Newsgroups: net.audio
Subject: Re: Re: ILP Power Amps - (nf)
Message-ID: <3003@uiucdcs.UUCP>
Date: Tue, 27-Sep-83 04:28:58 EDT
Article-I.D.: uiucdcs.3003
Posted: Tue Sep 27 04:28:58 1983
Date-Received: Thu, 29-Sep-83 01:30:40 EDT
Lines: 15

#R:pucc-h:-30900:uiuccsb:5700012:000:760
uiuccsb!emrath    Sep 27 02:39:00 1983

I'm a tad skeptical about that 240W rating (into 4 ohms)
from a +/-45V supply. To get 240W rms into 4 ohms, you need 43.8 Volts
(and 10.95 Amps) 0-peak at the output. Even assuming you could get a
+/-45V supply to do this, I doubt very much that the output stage could
deliver something like 10 amps with only 1 volt drop.
I realize that this was a manufacturer spec, but did it say that you can
run these at higher than 45V, in fact must, in order to get the 240W?

The 480W output from a bridged setup is more plausible, since if an
amplifier is voltage supply limited (not current supply limited and not
thermal limited), then two amps bridged will put out four times the power
of a single amp. For that, your supplies would have to put out 15.5 Amps peak.