Alright, I have two alpine subs, running on a pioneer amp. Alpine d8601 500 rms, 1500 or so max. My subs are alpine sws 12d4 and alpine sw12d4 the sw12d4 has 600 rms 1800 max 4 ohms(wired to two ohms dual voice coil etc) my sws12d4 is 500 rms 4 ohm wired to 2 ohm which is okay dual voice coil...