The XLm4 is the next generation of our most award winning driver. The XLm4 has aN added pole vent , redesigned top plate and T yoke, larger magnets wrapped in a stylish motor boot an 8 layer flat wound voice coil, upgraded cone and surround. We are always looking to make great even better and the XLm4 is again a step in that direction. Anyone looking for a subwoofer that not only sounds great but is a beast in the SPL lanes, look no further, you have found what you have been searching for.
| Sub Size | 10" | 12" | 15" | 18" |
| Mounting Depth | 8.25" | 9.0" | 10.25" | 11.25" |
| Mounting Hole Diameter | 9.25" | 11" | 14" | 16.75" |
| Outside Driver Diameter | 11.0" | 12.5" | 15.7" | 18.5" |
| Motor Width | 8.75" | 8.75" | 8.75" | 8.75" |
| Weight | 56lbs | 57lbs | 59lbs | 60lbs |
| VC Diameter | 3" | 3" | 3" | 3" |
| Displacement | .18³ ft | .19³ ft | .23³ ft | .26³ ft |
| Magnet Weight | 50lbs | 50lbs | 50lbs | 50lbs |
| Power Handling RMS/Peak | 2200 / 4400 | 2200 / 4400 | 2200 / 4400 | 2200 / 4400 |
| Impedance (Ohm) | D.7/D1/ D1.4/D2 | D.7/D1/ D1.4/D2 | D.7/D1/ D1.4/D2 | D.7/D1/ D1.4/D2 |
| Sd | 314.00 cm² | 494.00 cm² | 791.00 cm² | 1159.00 cm² |
| Vas | 12.42 liters | 25.77 liters | 66.02 liters | 144.36 liters |
| Cms | 0.085 mm/N | 0.08 mm/N | 0.07 mm/N | 0.07 mm/N |
| Mms | 171.77 g | 213.7g | 306.7 g | 346.7 g |
| Fs | 41.7 | 38.5 | 34.3 | 32.3 |
| BL | BL 22.73 N/A | 22.73 N/A | 22.73 N/A | 22.73 N/A |
| Re | 3.98 Ohm | 3.98 Ohm | 3.98 Ohm | 3.98 Ohm |
| Le | 5.2mH | 5.2mH | 5.2mH | 5.2mH |
| Qms | 11.24 | 12.92 | 16.55 | 17.6 |
| Qes | 0.35 | 0.403 | 0.516 | 0.548 |
| Qts | 0.34 | 0.391 | 0.5 | 0.532 |
| Xmax | 26 mm | 26 mm | 26 mm | 26 mm |
| Ref SPL @ 1 watt | 85.9 dB | 87.5 dB | 89.0 dB | 91.3 dB |
| Suggested Sealed | N/A | N/A | N/A | N/A |
| Suggested Ported | 1.0³ ft | 1.5³ ft | 3.0³ ft | 5.5³ ft |