so what, he'd loose wha a tenth wit teh car off. but i wouldnt question the single 10 of tommy. it does that score and its also loud at the headrest. everyone knows wha they can do. so y still question em. its gettin kinda old. they are loud, cheap, and can hang wit the best of em. i did a 49.6 on the dash wit 2 12Rs car off wit 2500d@1ohm wit 4 i did 53.4 sealed up car off dash 2500d@.5ohm 43hz. they wang. juss matter of testin and gettin the right box for em for ya vehicle. if u are on a budget and want sumthin that wangs, dont see y u wouldnt pick a pair of these up.