Ok i was having a previous issue with my stereo ended up being a dead deck so i bought a new one now that i have a new aftermarket deck (sony cdx-gt260mp) i have hooked it up and all was well except i noticed i wasn't getting any sound to the rear speakers so i faded to the back and lo an behold i am getting sound except it is extremely quiet for example at Vol. 50 to the rear speakers its is equivelent to the front speakers at Vol. 20 i made sure all the speaker wires were correctly tied in a checked the radio and nav fuses (even though i dont have nav i have nav fuses lol) all are good anyone know what the problem could be? also the setup of the system is factory which is basicly head unit to amp to speakers.