i had 2 1205db subs. i blew four of them, had to keep taking them back to the shop. the shop said there was a manufacturing error with them, cos the lead that goes to the cone was too short and kept snapping(i think its a tinsel lead or something). Anyhow, i changed to jl audio w3's, and they sounded a lot cleaner, and hit a bit harder. also i've got a kenwood mp3 head unit, just the cheap one. it gets really warm, and the cd's come out like they've been in the oven. the head unit puts out a very unpleasant distortion in the midrange and vocals. its like a resonant screeching sort of noise. i've had different speakers running off it, but am lead to believe its the head unit. in my opinion, kenwood sucks.