I got this sub runnin on a apsm 1500 @ 2 ohms paired with dbxi 10 in seperate boxes ( both subs are single4ohm) sub is seein 500 rms ..it holds its on ...the cone works a lot harder then the dbxi (polypropelyn vs pressed pulp) and voice coil gets hot but the sub has performed beautifully without a flaw...I even dropped it a couple times accidently before installing...if your looking for something low on the price bt big on the sound this is it...not a lot to look at but it sounds great when given over the recommended wattage rms