Turn your TV & sound system on. Keep pushing the "MODE" until you see "TV Sound" on the screen readout. You should now have sound thru your sound system. Be sure to turn off your outside speakers ( mine are button #3) or you'll be blasting the TV sound outside and your neighbors may not be watching the same program your watching. On my system, you MUST have some level of sound coming out of your TV speakers as your sound system is amplifying your TV sound. No sound out of TV, no sound out of your sound system. You can play with the sound levels on both to get the sound to where you like how it sounds.
Days camping (2016)----181 days
Days camping (2017) --- 52 days
2016 Wildcat MAXX 28RKX (33' TT), 2007 13' Scamp
2015 Ram Laramie Hemi, w/air suspension
30 years RV'ing
12 different RV's