Pro tip: When buying or selling speakers on CL, it is sometimes helpful to have either a battery powered T-Amp or a DC->AC inverter and a low powered (and ideally small sized) receiver. You can use your phone or iPod as a source, hook up the speakers, and verify that they are operational.
I use a 400 Watt Coleman inverter and a small Hitachi mini "receiver" from the 80's. I started doing so after getting burned on one of those Knight KN612 HC coaxial speakers.
This also prevents emails from CL buyers claiming that they got home, hooked up the speakers you just sold, and they didn't work.