JL Audio M12IB6-SG-TB: 12-inch (300 mm) Marine Subwoofer Driver, Titanium Sport Grille, 4 Ω
M-Series 12-inch Marine Subwoofer Driver for Infinite-Baffle Use (600 W, 4 Ω) - Titanium Sport Grille
Engineered as the reference standard for marine subwoofer performance, the M12IB6 is capable of producing staggering amounts of jaw-dropping bass in infinite-baffle applications.
Built to withstand real-world marine duty, this M12IB6 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.
The M12IB6 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.
Continuous Power Handling (RMS) 60 W
Nominal Impedance (Znom) 4 Ω
Nominal Diameter 12.0 in / 300 mm
Overall Diameter (A) 14 in / 356 mm
Mounting Hole Diameter (B) 12.065 in / 306 mm
Bolt Hole Circle Diameter (C)12.813 in / 325 mm
Motor Outer Diameter (D) 8.84 in / 225 mm
Mounting Depth (E) 8.05 in / 204 mm
Driver Displacement 0.064 cu ft / 1.81 L
Net Weight 23.8 lb / 10.8 kg
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
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
* Xmax specifications are derived via one-way voice coil overhang method with no correction factors applied.
** Efficiency (1 W / 1 m) is not an accurate indicator of a subwoofer’s output capability and should not be used as a comparison to other subwoofers to determine which one is “louder”.
Infinite Baffle Use Yes (preferred)
Min. Sealed Enclosure Volume 2.0 cu ft / 56.6 L (or larger)
Optimum Sealed Enclosure Volume 3.0 cu ft / 70.8 L