I have Concertone in my 2007 Lexington - not sure of the model. From the very beginning, the sub woofer "crackled", and very loudly. We finally couldn't stand it anymore and cut the wire to the subwoofer. The sound system now works 'acceptably', except for playing DVDs. When we play a DVD the sound is very low and at maximum volume we can barely hear.
I was hoping someone could tell me if the problem is likely with the subwoofer itself, the subwoofer wiring, or with the Concertone unit. The easiest solution would be to buy another Concertone subwoofer and see if the problem goes away. However, I don't want to waste $60 if that is not the problem. I would prefer to just replace the unit since it is anything but easy to use, but I'm not an electrical engineer....