JL Audio M6-8ib-s-gwgw-i-4 M6 Marine Subwoofer Sport With Transflective Le

M6 8-inch Marine Subwoofer with Transflective™ LED Lighting for Infinite-Baffle Use (200 W, 4 Ω) - Gloss White Trim Ring, Gloss White Sport GrilleWith appropriate system setup, the addition of a subwoofer allows your smaller main speakers to be free of the burden of reproducing low frequencies. This allows your whole system to play louder and to sound cleaner at all listening levels.Purpose-engineered and built for real marine duty, the M6 infinite-baffle woofers are designed to operate without a dedicated enclosure. Long excursion capability and rugged suspension systems help produce deep, powerful bass response that will transform your boat´s audio system. This model also features the added visual impact of JL Audio's Transflective™ RGB LED lighting, a patent-pending technology that emits a smooth lighting effect through the woofer cone, with a choice of several lighting colors. Add an optional RGB controller to create thousands of color variations. Professional installation is strongly recommended.The M6-8IB is best used with amplifier power in the 50W - 200W range and is optimized to operate with a large volume of air behind it (at least 1.5 cu. ft. / 42.5 l). If you prefer to use a dedicated enclosure, refer to one of the suggested designs located in the Specifications section for optimum performance.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): 200 W- Nominal Impedance (Znom): 4 Ω- Nominal Diameter: 8.0 in / 200 mm- Overall Diameter (A): 8.80 in / 224 mm- Bolt Hole Circle Diameter (B): 7.97 in / 202 mm- Frontal Grilles Protrusion* (C): 1.45 in / 37 mm- Mounting Hole Diameter (D): 7.375 in / 187 mm- Mounting Depth (E): 5.00 in / 127 mm- Driver Displacement: 0.033 cu ft / 0.93 L- Net Weight: 8.70 lbs / 3.90 kgParameters: - Free Air Resonance (Fs): 54.92 Hz- Electrical Q (Qes): 0.852- Mechanical Q (Qms): 10.314- Total Speaker Q (Qts): 0.787- Equivalent Compliance (Vas): 0.54 cu ft / 15.29 L- One-Way Linear Excursion (Xmax)*: 0.53 in / 14 mm- Reference Efficiency (no): 0.28%- Efficiency (1 W / 1 m)**: 86.7 dB SPL- Effective Piston Area (Sd): 35.15 sq in / 0.0227 sq m- DC Resistance (Re): 2.993 ΩmSealed Enclosure- Wall Thickness: 0.75 in / 19 mm- Front Baffle Thickness: 0.75 in / 19 mm- Volume (net int.): 2.00 cu ft / 56.6 L- External Width (W): 16 in / 406 mm- External Height (H): 16 in / 406 mm- External Depth (D): 18.25 in / 464 mm- F3: 51.78 Hz- Fc: 61.89 Hz- Qtc: 0.8869Ported Enclosure: - Wall Thickness: 0.75 in / 19 mm- Front Baffle Thickness: 0.75 in / 19 mm- Volume (net int.): 1.50 cu ft / 42.5 L- External Width (W): 16 in / 406 mm- External Height (H): 16 in / 406 mm- External Depth (D): 15.125 in / 384 mm- Internal Port Diameter (ID): 4 in / 102 mm- Port Length (L): 13.50 in / 343 mm- Tuning Frequency (Fb): 37 Hz- F3: 31.26 HzMaterials:- Injection-molded mica-filled polypropylene