well they arent known to be good subs but on the positive side i did see them hit 144 db ported at a competition in a neon i think. they were on a 1000 watt or so fusion amp (just thought youd like to know)
id imagine just solder them from what i understand but i never did it never blew any i had to anyway (cheap xtant sub lowest line but im very picky with distortion so i know it wasnt from me)