Dave - don't give up yet. The odds of you getting two non-functional 350s in a row are astronomical, so I'm hoping that someone here or at Axiom can take you through some other troubleshooting that might explain what's happening.
One the one hand, you could be the "unluckiest" man alive... it seems more likely though that it's something in your setup, but for the life of me I can't figure out what it is that would cause a direct MP3 player connection to the amps on the 350s to produce such noticeably different sound on one sub versus the other. [just to check, is that the case? Your last post said that there was a little more volume with a direct connection, but did you do the same connected to your Kenwood sub to compare output levels?]
Jason
