Hey jimmie,

That's what protection circuits are for. But be careful: AV receivers like the Denons do not have unlimited amounts of power into low impedances like the M80 towers.

And if the protection circuitry didn't shut it down immediately (which it apparently did), there's a chance a severely clipped signal might fry one of your drivers.

Regards,

Alan Lofft,
Axiom Resident Expert (Retired)