JL Audio M7-12IB-S-GwGw-4 - 12" (300 mm) Marine Subwoofer Driver, Gloss White Trim Ring, Gloss White Sport Grille, 4 Ω
Engineered as the reference standard for marine subwoofer performance, the M7-12IB is capable of producing staggering amounts of jaw-dropping bass in infinite-baffle applications.
Built to withstand real-world marine duty, this M7-12IB is designed to operate without a dedicated enclosure. It boasts a monstrous 4-inch voice coil and rugged suspension system to deliver outstanding linear excursion for high output and power handling.
M7-12IB is best used with amplifier power in the 200W – 600W range and is optimized to operate with a large volume of air behind it (at least 3 cu. ft. / 84.95 l).
Like all JL Audio marine speakers, this driver is built to withstand a real saltwater marine environment and deliver years of listening enjoyment.
Specifications
Continuous Power Handling (RMS) |
600 W |
Nominal Impedance (Znom) |
4 Ω
|
Free Air Resonance (Fs) |
35.34 Hz |
Electrical “Q” (Qes) |
0.856 |
Mechanical “Q” (Qms) |
10.389 |
Total Speaker “Q” (Qts) |
0.791 |
Equivalent Compliance (Vas) |
1.99 cu ft / 56.35 L |
One-Way Linear Excursion (Xmax)* |
0.73 in / 18.5 mm |
Reference Efficiency (no) |
0.28% |
Efficiency (1 W / 1 m)** |
86.7 dB SPL |
Effective Piston Area (Sd) |
80.54 sq in / 0.052 sq m |
DC Resistance (Re) |
3.543 Ω |
Dimensions

Nominal Diameter |
12.00 in / 300 mm |
Overall Diameter (A) |
14.00 in / 356 mm |
Bolt Hole Circle Diameter (B) |
12.813 in / 325 mm |
Frontal Grilles Protrusion* (C) |
1.45 in / 37 mm |
Mounting Hole Diameter (D) |
12.0625 in / 306 mm |
Mounting Depth (E) |
7.94 in / 202 mm |
Driver Displacement |
0.148 cu ft / 4.19 L |
Net Weight |
25.35 lbs / 11.5 kg |