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Rockford Fosgate RM18D4B 8" Marine Subwoofer - Black

$139.99
Out of stock
SKU
RM18D4B

Key Features

  • 8” Black marine subwoofer
  • Dual 4-ohm voice coil
  • True Marine Grade compliance
  • Designed for sealed, vented or infinite baffle installations
  • High temperature Kapton former with polyimide insulated copper wire
  • UV and salt fog resistant Santoprene surround
  • Ultra-flexible fully insulated silicone lead wire
  • Moisture, tear and fatigue resistant aramid fiber spider
  • Black removable trim ring/grille
Unit Includes: 8" Dual 4 ohm Black subwoofer driver, Black subwoofer grille, Mounting hardware, and Instruction manual

Features:
  • Rockford Fosgate RM18D4B 8" Black Marine Subwoofer
  • True Marine Grade compliance
  • High temperature Kapton former with polyimide insulated copper wire
  • Injection molded mineral filled polypropylene cone body with UV inhibitors
  • 100% UV stable ASA injection molded plastic parts
  • 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
  • Linear, high excursion matched motor magnetics and suspension design
  • Moisture, tear and fatigue resistant aramid fiber spider
  • Black removable trim ring/grille
  • 1.5" aluminum voice coil diameter


Element Ready:
  • Dust Resistant
  • UV Inhibitor Materials
  • Thermal Shock Resistant
  • Water Resistant
  • Corrosion Resistant
  • Stainless Hardware


Power Handling Max:
  • 300 Watts Maximum Power


Power Handling RMS:
  • 150 Watts nominal continuous power handling RMS


Quick Specs:
  • Nominal Impedance: 4 -Ohm
  • Frequency Response: 30-250Hz
  • Sensitivity: 89 dB @ 1Watt / 1meter
  • Magnet Weight: 17.7 oz


Dimensions:
  • Mounting depth: 3.6 inches
  • Cutout diameter: 7 inches
More Information
Manufacturer Rockford Fosgate
Part Number RM18D4B
Driver Size 8 inch
Subwoofer Shape Round
Voice coils Dual voice coil
Impedance (per voice coil) 4 ohm
FS 41.5 Hz
QES 0.89
QMS 8.48
QTS 0.81
RE 6.3 Ohm
VAS 19 L
Xmax (millimeters) 7 mm
Sensitivity 89 dB
Frequency Response 31-250Hz
Sub enclosure type Banpass, Freeair, Ported / Vented, Sealed
Power Handling RMS 100 Watts
Power Handling Peak 300 Watts
Shallow Mount Subwoofer No
Mounting Depth 3.60 Inches
Cutout Dimensions 7.00 Inches
Sealed Enclosure Recommended Size 0.55 ft3
Ported Enclosure Recommended Size 1.1 ft3
Color Black
Warranty 1 Year
UPC Code 780687345402
Return period 30 days
Exchange period 30 days
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