Rockford Fosgate Marine PM212S4B - 30cm Subwoofer

PM212S4B - Punch Marine 12 "SVC 4-ohm subwoofer black

The PM212S4B is a white 12-inch subwoofer with waterproof technology that was specially developed for marine watercraft or powersport applications. It has a stainless steel sports grill and is UV and moisture resistant.   The versatile design enables use in free air, closed and bass reflex enclosures

• True marine grade compliance
• 100% UV-stable Centrex injection molded parts made of plastic
• Injection molded, mineral-filled polypropylene cone body with UV inhibitors
• UV and salt mist resistant TPE (Thermo-Plastic Elastomer) surround
• Corrosion-resistant, removable 18-gauge stainless steel grille cover insert
• Ultra-flexible, fully insulated silicone wire
• Proprietary corrosion resistant spring loaded pressure clamps
• Moisture, tear and fatigue-resistant aramid fiber spider
• Linear, highly deflection-adapted motor magnetics and suspension
• Internal magnetic shield
• Removable trim ring / grille
• Available in black (PM212S4B) or white (PM212S4)

Technical specifications

• 30cm marine subwoofer 12 "
• Nominal impedance: 4 ohms
• CEA-2031 Compliant to CEA-2031 Directives
• Re (Ohm) 3.10
• Power handling (watts RMS): 300 watts RMS / 600 watts max.
• Fs (Hz): 25.5
• Magnet weight (oz):  93.6 oz. (2.65 kg)
• Voice coil diameter: 2 "aluminum
• Qms: 9.00
• Le (mH): 0.3
• Qes: 0.55
• Qts: 0.52
• Vas (liter): 44.3
• Sound pressure (dB at 1 W / 1 m): 87
• Xmax (mm): 12
• Sd (cm 2): 510
• Speaker connection: Dual compression with 8 AWG
• Shipping Weight: 12.9 lbs. (5.9 kg)
• Cutout diameter: 278 mm (10.9 inches)
• Installation depth: 167 mm (6.6 inches)
• Woofer displacement: 0.258 cu. ft. (7.3 liters)