Originally Posted by cedrastump
The camper has a ZX700, not sure of the manufacturer. I could not find anything in the manual that stated the manufacturer. Also the different sections of speakers (A,B and C) dont really work, they all work on A.
The ZX700 is made by Concertone.
This is most likely a botched wiring job on the speakers.
The ZX700 has 3 different sets of speaker wires and each pair must be
connected to the correct speaker with the correct polarity.
There are probably 30 wires in the rear of your unit and EVERY one
of them needs to be connected correctly and securely.
If you're out of warranty, you can give it a shot yourself or take it to
a decent car stereo shop and let them figure it out.
If you want to tackle it yourself it's not as bad as I make it sound IF you take
them one wire at a time.
If you remove the unit from the cabinet and look at the rear the wires
coming from the ZX are probably marked.
IF that's the case your best bet is to disconnect all the speaker wires
and label them.
How can I do that? you ask--- easy. Take an AA battery and touch a speaker
wire to the ends. Tap or scratch the wire on the battery. The speaker
in question will make a popping or scratching sound. Put masking tape
on the wire and label it as to which speaker is doing the popping.
Mark them all this way. You might need a helper to listen at each speaker
so you know which is which.
Once you've got all the wires marked, you just gotta hook them up to
Use wire nuts of the correct size and make secure connections so they
won't vibrate loose some day.
Good luck. I did this to my unit and it was pretty much a 1 beer job