Binger,

On the face of it, it certainly sounds like a tiny short, either with a stray strand of wire between the terminals of perhaps a short (rare) in one of the speakers themselves.

By the way, the 6-ohm VP150 is an easy load for any AV receiver. Does your Yamaha have an impedance switch or setting on the rear panel? It should be at the highest setting--8 ohms. If it's at a lower setting, that will impose a current/voltage restriction on the power supply, dramatically reducing the output power and could be causing the shut-down.

As some have noted, individual swapping out of the speakers and cables might reveal the source of the short.

But check the impedance switch first, if there is one.

Regards,
Alan


Alan Lofft,
Axiom Resident Expert (Retired)