Originally Posted By: Ken.C
I don't think speakers without amplifiers would usually have that sort of thing.

I had a pair of Fisher speaker that had auto-resetting circuit breakers in them (probably a bi-metallic compound that would flex and break the connection if it got too hot, and then bend back when it cooled down). They were not amplified, it was there supposedly for the speaker's protection.

Pioneer PDP-5020FD, Marantz SR6011
Axiom M5HP, VP160HP, QS8
Sony PS4, surround backs
-Chris