[tonyvdb]

The only big issue is that Car audio is almost always 4ohms and this will put quite the strain on a receivers amplifire section. If all your sorrounds are 4ohm thats way to much for the receiver to handel.

 

[tonyvdb]

Unfortunatly most receivers can not drive al 7 channels with 4ohm spaekers atached, only the mains. You will damage the receiver if you do.