I have no real experience with the model you have so I'm probably not helping
My bass speaker is just a non powered large speaker with dual voice
It was simply paralleled to one of the channels.
I replaced my player and re-did all the speaker and power and antenna
connections because they were such a tangled mess and some weren't
secure. I cut 6 or 8 feet out of the coiled up antenna wire
and that seemed to help with radio reception. The antenna ground wasn't
connected to anything so I connected it to the battery neg. Radio
reception seemed to improve somewhat but still never was as good as
the one in my truck. It seems like the radio should have been as good
or better than my truck since the antenna is sitting up there on top of
I put my bass in parallel with the bedroom speakers because we watch
a lot of DVDs from bed. I wanted good sound. And since the bedroom
is just 2 channel left and right, it wasn't hard to figure how to connect
I just leave the BR speakers on when we're sitting at the table or on the couch with
the main cabin speakers on.
Our trailer is just one big room with no real bedroom anyway.
Good luck with your concertone!! My last one was haunted or something.
It started flashing off and on in the middle of the night.
I think it was trying to communicate with the mother ship!