Memphis Audio MXA110SPD 10" marine powered subwoofer at Crutchfield
Amazon.com: PyleUsa 10-Inch Low-Profile Amplified Subwoofer System - 900 Watt Compact Enclosed Active Marine Underseat Car Subwoofer with Built in Amp, Powered Car Subwoofer w/Low & High Level Inputs - PLMRSBA10 :
Wet Sounds Stealth AS-10 Marine powered subwoofer — sealed enclosure with 10" sub and 500-watt amplifier at Crutchfield
Amazon.com: Pyle 8-Inch Low-Profile Amplified Subwoofer System - 600 Watt Compact Enclosed Active Marine Underseat Car Subwoofer with Built in Amp, Powered Car Subwoofer w/Low & High Level Inputs PLMRSBA8,Silver : Electronics
Pyle - PLMRBS8 - Marine and Waterproof - Vehicle Amplifiers - On the Road - Vehicle Amplifiers
JENSEN JMPSW800 8" 200 Watt Amplified Marine Subwoofer - Rock The Boat Audio
KICKER | Marine Subwoofers
JENSEN JMPSW800 8" 200 Watt Amplified Marine Subwoofer - Rock The Boat Audio