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Originally Posted by Kevin7909
(two)...people claim amps produce DC when distorting...this is foolishness...put a voltmeter on the amp while the amp has the system pounding and see for yourself...if u measure anything more than about 0.1V DC then u have issues with that amp and it should be checked by a tech...
Kevin
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Thanks for clearing that up for me. I went into a BUSY local store to buy some wire and overheard the install tech telling a customer "Of course you blew the sub, you were sending it straight DC". I was pretty sure this was bunk. Household DC is prety much a 60Hz sine wave, right?
I used the Autosound 2000 Test CD to get a bit of training as to what different distortion levels sound like, and you're right, I had my gains set to a point which yielded a min. of 10% distortion. They're much lower now.
So heat is the killer. Either running a sub at max. rated power for an extended period of time or 2-3 times above max. rated for a short period. I've read that the average speaker is something like 2-3% efficient so 100 watts of input yields 97 watts of heat. How does your experience rate that?