pitfalls of running my amp to hard, tech advise needed

[TypeR0149 10+ year member]

I put a JL a1400 I had laying around my house into my 300C the other day, i took the signal from my already there factory amp.

well I kow it was gonna be a very high voltage input signal, well I was right my amp with the gain all they way down, is putting out 44 volts (almost 500 watts) it should be doing 30 volts.

i kinda like running this much power out of a small amp, think i can get away with it for a while, or will the amp go soon.

amp does get hot though, LOL

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[Bake 10+ year member]

If that amp has thermal management, And I suspect it does, there should be no issues at all.

 

[thch 10+ year member]

well, it is possible to overdrive an amplifier's input. i've never seen anyone actually do this though.

from the circuit, it becomes clear that for a bjt input stage, bringing the input too high (or low depending on type) will forward bias the base-collector junction, and cause current to flow.

FET input amps can invert phase (clip, but to the wrong polarity) with over driven inputs.

some ICs can enter a latchup condition which will usually result in the rapid destruction of the IC in some entertaining manner.

that said, i've never seen these issues in commercial audio amplifiers. but also i don't use excessive voltage inputs.

--edit -- i've seen the issue with amplifiers used in non-audio applications.