My brother has four 15" Crystal Comps that have been sitting around. He use to have them in a minivan in these tiny ported $hitboxes he ordered online running of of 3 $hit Kole Audio amps and four caps. I know he had a ghetto a$$ setup but these subs DID get insanely loud for the price! We ended up blowing up the boxes and amps with them. The subs themselves are still in perfect condition.
Anyways, I'm wondering about these. I don't know anything about the company or if they're worth dropping (money) into another vehicle