Re: New G-K 1001RB-II Going Thermal and Cutting Out........

"5 String" <catdriver@xxxxxxxxx> wrote in message
news:f03hkq$kj7$1@xxxxxxxxxxxxxxxxxxxx

OK got it, some where we crossed tracks as it were. OP described his set
up as pre at 75% post away up there as well and his bass with "hot"
pickups at 1/4 (if I recall..). My thought was to drive a hotter signal
at the amp and lower both the pre and post. Therefore we're not
necessarily altering the the gain ratio, but feeding a hotter initial
signal. Shouldn't that decrease the amount of power required to generate
a given SPL? Wouldn't that lower the amount of excess heat?

The amount of power to generate a given SPL is what it is. If a cabinet
needs 300 watts to generate 100dB at 10 meters, then it needs 300 watts to
generate 100dB at 10 meters. That means the amp needs to kick out 300W. If
the amp has a meltdown at 250W, tough luck. It doesn't matter if the
original signal was hot or weak. It's the output section that needs to be
able to handle the 300W. It doesn't matter whether there's a high gain ratio
on a weak signal or a low gain ratio on a hot signal, the output section
still has to kick out 300W.

What I think is confusing you is that the amp is *not* simply adding some
electricity to the incoming signal and sending it along its merry way. It's
creating a whole *new* signal that looks like the incoming signal. The power
amp section is making a copy of the original signal (so to speak) at a much
higher power level. Likewise the preamp is doing the same thing with the
signal from your pickups. Each is a separate circuit.



.

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