John Robertson wrote:


Check the 'time to open' for your Polyswitch


** There is no set time - it is a function of the degree of overcurrent.

some values are in the
seconds, plenty of time to blow a voice coil..


** To burn a voice coil in a few seconds implies an extreme event - not just playing music too loudly.

Small Polyswitches, with ratings of say 1 amp, trip very quickly if overloaded by a few times - as they would be with an oscillating amplifier.


..... Phil