bigdep, there's not much written about these sound systems in the Winnie black bag of "instructions". However, dealers are instructed on the operation of the latest electronics; -it might be helpful to contact your dealer. I'm not trying to put you off, but there's been a lot of threads on this forum regarding the TV sound & surround sound subjects. The systems operated differently from one year to the next. Some needed the proper selection of options, or "activation", using the tv remote (selecting correct audio out and type of sound); others were not plugged/wired correctly from the factory; still others had weird quirks when flipping the RV Radio power source button (on the dash) from engine to house batteries...
But one thing sure, here's where you can get some good help:
Winnebago Owner Relations, ph. 800-537-1885, or e-mail to
[email protected]