Hi rdwarn,

Another possibility is that you are running the H/K's speaker-level outputs for your surrounds into that Bose bass module. If memory serves, Bose puts all its amplifiers into the bass module. So, you'd be connecting speaker-level outputs into inputs intended to receive a low-level (a few volts) signal.

I suspect the H/K protection circuitry is triggered by the strange impedance it senses when you connect the surrounds to the Bose low-level inputs.

Regards,

Alan Lofft,
Axiom Resident Expert (Retired)