Kana: That's a good suggestion about measuring the DC leakage. My brother did this after having problems with some speakers. What he found was that one amp was passing 3 volts of DC on one channel and 2.5 volts on the other. Luckily, this problem arose while he was running some junk speakers. Needless to say, that amp is out of the system until we can get it straightened out. 500 millivolts ( 1/2 a volt of DC ) is considered to be "acceptable" by most, but that is way high in my opinion. The amp that i gave my Brother to use measured less than .02 volts of DC on either channel.
As to the Perreaux's, the 2150's and 3150's are very similar amps ( cosmetically and in terms of basic circuitry ) that have very different sounds to them. I don't know anyone that has ever chosen a 2150 over a 3150 after hearing them side by side. Having said that, i run my 3150's strictly for woofers, as that is what they do best. Sean
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