also base allllll numbers off rms if your amp and sub both rms at 600W i dont care if your subs max is 650W and your amps max 5000000000w you will never really blow the sub casue you over powered it lol we used to **** around with old system parts we replaced IE some replacing an explode system after we told them not to get it.... any way we put some cheep amps on a scope and tried to see "what they could do" yea not even closes to what there max was. and there was no shortage of juice for it