My none Bose, Audi sound system is great except there is no sound, or better put, almost no sound emanating from the rear speakers.

Because I can hear a tiny amount of sound coming from the rear speakers, it tells me there is wire connection from the unit.

My question is, is it a common issue for rear speaker malfunction with these Audi sound systems, or, maybe my rear speakers are blown........I doubt they are blown and believe that if I hooked up new speakers for the rear that I would only discover something wrong with the Audi sound system, not speakers, but radio unit, itself...............

Anyone have this problem?