Hey I have 1 Sundown Audio 12" SA-D4 wired to a Hifonics Brutus Brz1200.1D 1200w RMS Monoblock Amplifier and a Kenwood KDC-358u headunit. Everything is working great. But my Sundown isn't as loud as I have heard sundowns are supposed to be... It is wired in parallel and my amp is stable on 2...