Almost EVERYONE on this forum has had problems with the Concertone crap that came with almost ALL Forest River campers!! Just look at the post accessed from the homepage, and there you'll find (127 at last check) posts about this system. The ZX 600 is their newest-(as far as I know) system, and they are separate from the Digital TV (should be a Venturer). The sound to the ceiling speakers and the sub are transmitted through jacks in the rear of the TV, as well as DVD picture transmitted to the TV, also.
Other than that, the TV can be used separately from the Concertone, by unplugging the one headphone jack input wire in back of the TV, and scrolling through the set up menu for the TV's built in speakers, to turn them on. I did this while my Concertcrap was broken, the first day I got my new camper home!! Hope you have better luck with yours, and Happy Camping! Randy
/SIGPIC]'08 V-lite Flagstaff 30WRLS
'06 Ram 1500 QC hemi
Reese dual cam sway control,
K&N series 77 intake, Hellwig helper spgs. LT tires,
Flowmaster "true duals", 380 h.p., Bilstein shocks