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Bizarre amp behaviour :()

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olly_k

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Hey folks, just watching the telly when something odd catches my eye - the bass drivers on my speakers are slowly oscillating at a rate of about 3Hz, and what looks to be + / - deflection!!! Really weird looking and very rhythmic and almost sinusoidal in motion.

The amp is a Yamaha DSP A5 which atm is on 'cd' (connected to computer audio out).

I guess this must be some sort of feedback fault within the amp but wandering if anyone could shed light on anything similar like this?

BTW It has stopped now but if it starts again I will try to get a video!

Olly.
 
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