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In the Forum: Audio Discussions
In the Thread: It’s mad, mad, mad... electricity.
Post Subject: Topology...Posted by Romy the Cat on: 6/17/2013
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 Bill wrote:
I don't know how much current his amps pull on turn on but I was running just two of the 1500's with 20 channels of amplification including two large subwoofer amps and 4 Class A SET's and sundry source components turning on all at once and didn't have any problems with them going into bypass. Also, they were both running normally at 75% power, and on peaks I noticed that the 1500's were running at beyond 100% with no problem. I have since put the subs and rear channel amps on an old pp 2000, so the 1500's are now running at a steady 50% as all amps connected now to them are Class A. The 3000+ units are supposed to be able to sustain 200% peaks for 10 seconds, or about 6000 v-a, so Romy's must be sucking more than that on turn-on of his amps, so this could be alleviated by plugging in the amps separately.
The loading current is not as much property of amplifiers amount but rather the amplifier topology.  The fact that it is SET does not say anything unfortunately. Still, the same amps with old PP did not go bypass but new one do sometimes. If the new units are more powerfull then the reson migh be in some kind of miscalibration of bypass sensitivity on new units?

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