Re: Selling the Ampeg. What will I get now?


"JimmyM" <mmm@xxxxxxx> wrote in message
news:tkb4q4dulelpea8im35rnenp5ckgbnbm5c@xxxxxxxxxx
On Sun, 22 Feb 2009 22:55:38 -0600, "Mike Rieves" <mriev@xxxxxxxxxxx>
wrote:

Clipped, square waves are also dangerous to LF drivers because they
cause
physical damage -- the voice coil former will tear itself away from the
cone. A woofer cone is too big and massive to handle the acceleration
of
the abrupt changes in direction that a square wave forces it to do, and
the voice coil will try to handle the changes without the cone, if you
push it too hard. One more time: If the power amp to your subs is
flashing its "clipping" indicator, you've got to back off, even if your
amp is rated at 500 Watts RMS and your subs are rated at 1200. Ignore
this advice at your own risk.

As I said before, you need to go take a course in elementary AC circuits.
If
your amp is rated at 500 watts RMS, it's going to put out 1000 watts even
if
driven into square wave clipping, probably less because most amp power
supplies won't provide enough current so support that. Even if it can, if
your subs are rated at 1200 watts continuous RMS, 1000 watts is still 200
watts below the max level.

That's assuming the power handling rating is accurate, which it almost
never is. However, if a cab is rated at 1200w RMS, it should
certainly be able to take a 1000w peak signal.

Since reputable speaker manufacturers live or die depending on whether
their speakers do what they say they will, speaker power ratings are usually
a bit on the conservative side. Cheapo speakers may be wildly over-rated.
There are three things to take into consideration; first, try to match your
speakers' and amps' rated power fairly closely, second, amps driven into
heavy clipping may produce up to twice their rated power, and third, if it
sounds distorted, turn it down! That pretty well convers it. :-)



.

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