Rockford Fosgate RM18D4

General Features:

• 8" Dual 4-ohm Prime R1 Marine Subwoofer
• Power Handling:
• Peak: 300 watts
• RMS: 150 watts
• Recommended Power Range: 75 - 200 watts RMS
• CEA-2031 Compliant Subwoofer
• Klippel Verified Subwoofer
• Meets or exceeds ASTM test standards for Marine/Outdoor use
• 100% UV stable ASA injection molded plastic parts
• UV and salt fog resistant Santoprene surround
• Injection molded mineral filled polypropylene cone body with UV inhibitors
• Removable grille cover insert
• Ultra-flexible fully insulated silicone lead wire
• 1.5" aluminum voice coil diameter
• Proprietary corrosion resistant spring loaded push terminals
• Moisture, tear and fatigue resistant Aramid fiber spider
• Linear, high excursion matched motor magnetics and suspension design
• VAST Surround, provides up to a 25% more cone area
• Protected against Dust, UV, Water, Corrosion
• Dual 12 AWG compression speaker terminals
• FlexFit slot mounted frame pattern basket
• Top-mount depth: 3.60"
• Cutout Diameter: 7"
• Frequency Response: 31 - 250 Hz
• Sensitivity: 85 dB
• Xmax: 7 mm
• Resonance Frequency (Fs): 41.5 Hz
• Optimum Sealed Enclosure: 0.55 ft² (15.62)
• Optimum Vented Enclosure: 1.10 ft² (31.15)
• Also Optimized for Infinite Baffle (Free Air) Applications