Thinking About Using A Speaker Switch

[Robert-The-Rambler]

I have a pair of DCM KX12 Series 2 speakers. I have an Onkyo 804 model receiver that has a pretty good amp but I'm looking to experiment with a setup that includes a Behringer EP 2500 for 2 channel audio only. For 2 channel music I want to use the Behringer amp and for home theater I want to use the built-in amp for the Onkyo. I don't have enough current available nor the desire to use the Behringer and the Onkyo amp in a multi channel setup for this room. The Behringer amp is a high wattage class H amp that outputs 450 watts RMS into 8 ohms 20hz - 20khz in stereo. The speaker switches I see at Amazon.com all mention a limit of 100 watts or 150 watts. Am I SOL here? And how do I set this thing up? I'm assuming that I run speaker wires from the amps to the switch and run a single speaker output to the speakers. Is this a workable project?

Was looking at this...

http://www.amazon.com/Monster-Cable-.../ref=de_a_smtd

I was looking further at that product and that doesn't seem to be the right product, no? The goal is to use the same speakers and two different amps at different times. Is that possible with a switch?

Here is the manual.

http://www.monstercable.com/lit/Spea...d_6_Manual.pdf

I'm on vacation and I'm looking for an audio project that does not include burning down the house.