From what I've seen so far from reviews and what people say, he should get two sets of Hertz MLK 2 TWs for around $2,000 or a pair of CDT ES-62iM for $1,200 a pair if he wants to spend less. Get a Cadence ZRS-C4 4 channel amplifier for $650. Get a 12" Dayton Titanic MK III's in a 1.25 cubic...