I have a memphis 15-PR154D 250wrms,500wp in a memphis box vented, If i power it suffeciently lets say 250-300wrms to it with a memphis amp , will this drop, what I had before was some off-brand stuff that only had a 200wp amp to two 10's in a bandpass box so the 10's werent even prolly pushin 40wrms a piece. I had someone tell me that the new stuff i bought isnt gonna do anything and he told me to go get some sony explods and two sony amps LOL LOL . The guy doesnt know what he is talkin about does he? Tell me though this stuff we hit? its in a hatchback too.