Alpine SWS-12D4
This Alpine 12” dual 4 ohm subwoofer has a mounting depth of 177mm. Handles a 500 watt RMS of continuous power, peaks at 1500 watt RMS.
Focal 33V2
This is a classic Focal subwoofer, smooth, unobtrusive, seamless, deep, accurate bass. This is the thinking man's subwoofer. Not for bass heads, this is for people who appreciate music reproduced accurately. Not the standard size, at 13” it plays lower and louder and handles 800 watt max power. Bonus 3 year warranty with BDL installation.
MTX 5512-44
This 12” MTX subwoofer puts out 800 watts max power (dual 4 ohm), and has a mounting depth of 157mm. It features a double stitched rubber surround and a double stacked magnet.