I use 4 amps WA9 to drive two pairs of heads and four subs Ev 46cm. Rponse good time, with little diffrence Crown (no, no, but be careful ...); thermal protection s'embale easily into 4 ohms (do not talk about at 2 ohms). For large and medium Systmes I rsolu little trouble in turning the heating foam filters derrire the ventilators. Feedback, I have 4 amps powerful for the price of two, and I am delighted ... Thank you the Chinese continue as a.
PS, my Socit is based in the Camargue, and 40 amps cashing dj shadow, even before receiving a modulation ...