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ROCKFORD FOSGATE

ROCKFORD FOSGATE Prime 8" Dual 4-Ohm Subwoofer

$139.99 USD
RM18D4

The RM18D4 is a white 8” Prime R1 subwoofer designed for marine watercraft or powersports applications. It features color matched grille and is UV and moisture resistant. Can be used in sealed, vented or infinite baffle installations.

The RM18D4 is a white 8” Prime R1 subwoofer designed for marine watercraft or powersports applications. It features color matched grille and is UV and moisture resistant. Can be used in sealed, vented or infinite baffle installations.

 

  • True Marine Grade compliance
  • 100% UV stable ASA injection molded plastic parts
  • Injection molded mineral filled polypropylene cone body with UV inhibitors
  • UV and salt fog resistant Santoprene surround
  • Ultra-flexible fully insulated silicone lead wire
  • Proprietary corrosion resistant spring loaded push terminals
  • Moisture, tear and fatigue resistant Aramid fiber spider
  • Removable trim ring/grille
  • Available in black or white
  • 2 Year Warranty
Nominal Impedance
Dual 4-Ohm
Magnet Weight (oz)
17.72 oz. (0.50 Kg)
Voice Coil Diameter
1.5" aluminum
Speaker Connector
Dual 12 AWG compression
Mounting Depth
3.6 in. (91.7 mm)
Shipping Weight
CEA-2031 Compliant
CEA-2031 Guidelines
Fs (Hz)
41.5
Qes
0.89
Qms
8.48
Vas (Liters)
19.0
Xmax (mm)
7.0
Re (Ohms)
6.3
Le (mH)
2.48
Size
8"
Power Handling (Watts RMS)
150 Watts RMS
300 Watts Max
SPL (dB @ 1w/1m)
85
Qts
0.81
Cutout Diameter
7.0 in. (177 mm)
Woofer Displacement
0.05 cu. ft. (1.41 Liters)
Sd (cm2)
277