Has anyone measured the frequency curve of a base model receiver like the 51807? I ask because it seems like the rear speaker wires get a more solid bass signal than the fronts. Either that if I have seriously mismatched speakers which could be true. It could also be that there are a lot more holes in the front door inside panel. I have Infinity PR6500CS for the fronts and Kicker 43CSC654 for the rears. Could be my choice of speakers. iPhone ?
