i probably wouldnt do it, because i highly doubt there exactly accurate to eachother..but if the subs are hooked to separte amps i suppose it wouldnt really hurt anythingbump. i have a rockford 401s. I cant sell it (dads) so could i get an amp that does the same rating or would the subs sound diffrent? If i wired 1 sub to 400w @4 ohm and the other to 400w @ 2ohm would they sound ok (using 2 diffrent amps again). If so then im looking for something that will do 400@ 2 or 4 ohm bridged.