My Trailer Automotive Receiver use the fader lever for Front/Back or BOTH zones in the middle.
My daughter introduced me to the portable BLUE TOOTH speakers like found at WALMART and these solved all of my speaker sound problems. these are battery operated and can be recharged or just run off a 120VAC source...
The BLUE TOOTH transmitter module plugs into a USB port or you can just plug in mini audio cable to any audio source...
Great sound too... Great or carrying outside to the patio area as well...
Roy and Carolyn
I claim Horse Creek Country in Southern Ill - Momabear is from North Texas
We live in King George VA
RETIRED DOD DOAF DON CONTRACTOR Electronics Tech 42YRS
"We're burning daylight" - John Wayne
2008 STARCRAFT 14RT OFF-ROAD POPUP with PD9260C and three 85AH 12VDC batteries
2010 F150 FX4 5.4 GAS with 3.73 gears - Super Cab - Towing Package - 2KW Honda EU2000i Gen
K9PHT (since 1957) 146.52Mhz
"We always have a PLAN B"