Date: Mon, 25 Apr 2005 20:18:55 +0100 From: Colin Stamp <col.dustbinnospamp.plus.com> Subject: Re: I think I blew my amp??!!
On Mon, 25 Apr 2005 13:25:43 -0400, Malt_Hound <Malt_Houndnospamm*yahoo.com> wrote: >If that was true, the only thing I could see is possibly blowing out a >tweeter, since the woofer would have plenty of power handling capability >and the spikes would be very high frequency and so the crossover network >would shunt it away from the woofer and midrange and send only to the >tweeter. Yep. That's about right. > >But I don't see why driving a linear amplifier into its limits (that's >what clipping is) would cause spikes... > I don't make a study of it or anything, but I could take a couple of guesses... 1. The amp's power rating will be at a certain, reasonable, distortion level - say 5%. That 5% distortion doesn't happen *at* the clipping point but some way before it. So you can drive the amp harder and get more power than it's rating, but it sounds crap so the manufacturer can't make any claims about this higher rating. 2. If you then continue to drive the amp harder still, and into real clipping, the resulting sharp edges on the output waveform mean the amp is generating much more power at high frequencies than it would normally. The tweeters in the speaker system would normally only expect to see a small fraction of the amp's output, so when the amp starts producing serious power in the tweeter's range, safety margins can get eaten into. Cheers, Colin.