I've had my two Sundown Audio sa12 D4Vs for a couple years now hooked up to my Mono Audiopipe APSM-1300 1000w@1ohm . Hooked up in my 04 grand prix in a ported box with 4 gauge wiring, now in my 2012 optima with the LOC behind the OEM head unit and 0 Gauge wiring in a sealed box still down to...