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
Element Ready™ - Subwoofers
These subwoofers are protected against Dust, UV, Water, Corrosion, and
feature Stainless hardware.
Power handling on Rockford Fosgate speakers conform to CEA-2031 industry
Klippel is a speaker certification program allowing us to deliver the best
ASTM Test Standards
Marine Grade standards ensure resistance to extreme environments.
VAST Surround - Marine
The Vertical Attach Surround Technique significantly increases a
subwoofer's effective radiating...
FlexFit 2 Basket - Marine Sub
The slot mounted frame pattern allows for variable adjustments to the
mounting position of the...
Anodized Aluminum Voice Coil Former
Rockford Fosgate subwoofers use anodized aluminum voice coil formers for
superior heat dissipation...