I have a CSi40 as my center speaker and it is Bi-Wired to my Denon 3802 Reciever. Center Speaker is set to Small.
A few weeks ago I blew the drivers on my CSi40 -- I could hear both of the old drivers scraping when I pushed in on the cones slightly, and Polk replaced both without question. The new drivers arrived today and I installed them with ease.
My CSi40 sounded wonderful immediately after I put in the new drivers when I ran the speaker setup and tested the levels with internal Denon Speaker Level setup. The test tone matched the sound that came from the other 4 speakers. I set all speakers to 75db.
I then put in the Avia DVD to adjust the levels a bit more. At this time the Denon switched to outputting the sound as a Dolby Digital signal as it should. The Volume knob was set around -15db as I started.
I began the first test, which is just the speaker identification test (Left Front, Center, Right Front . . .) As the test cycled to the Center speaker for the first time the Denon almost immediately did its self-protection shut-off. I heard no popping or buzzing from the center speaker. The whole system just shut off.
When I tried the test with the Avia DVD again, it did not shut off when I got tot the center speaker, but sound only came from the tweeter. However, when I hold my hand over either driver I can feel slight vibrations.
At this time I tried the internal Denon Level check again and only got sound from the tweeter.
I checked all the speaker wires and they seem fine and the connectiions look solid. I switched the top and bottom wires, and still sound only came from the tweeters with the larger cones only vibrating slightly. I checked the wires inside the speaker and they seem to be conneted firmly to the drivers. As a last ditch effort I *gently* pushed on the driver's cones -- no scraping sounds thankfully.
I'd love to call Polk Customer Service but the are closed now, and I will be calling tomorrow, but in the meantime woudl anyone have any idea what the problem may be? I'm at a complete loss.