18 inch powered subwoofer

Alpine S2-W8D4 8" S-Series Dual 4 Ohm Car Subwoofer & KTE-8G.3 Grill Bundle

Cerwin-Vega V15DV2 15" 2Ω DVC Subwoofer 1500W RMS/4500 MAX

Wet Sounds Marine REVO Black SW Grill Boat Speaker Bundle (2) 8" & 10" Subwoofer, Center Console, Bay Boat Upgrade

Wet Sounds 12" Black Marine Subwoofer with Silver XS Grill

Alpine Dual 8" Halo Truck Subwoofer + 750W Amp, Bass Knob, 4GA Kit

Garmin Fusion Apollo AP-SL12SPG 12" LED Marine Subwoofer Sport Grill Gray

Memphis Audio MJMECHEV8D1V2 Dual 8" Subwoofer Loaded Enclosure, 1 Ohm, Compatible with 2007+ Chevrolet & GMC Crew Cabs

Diamond Audio DESMB10 - 10" Slot Vented Passive Subwoofer Enclosure (2Ω)

PowerBass Party Pack - Single 8" Subwoofer in truck enclosure with ASA3-200.2 Amplifier and Wiring Kit

MTX TERMINATOR 1000-Watt RMS 1Ω Mono Block Class D Amplifier and Two MTX Audio 3512-04S 35-Series 12" 300W RMS 4-Ohm Shallow Mount Subwoofer

Cerwin-Vega V15DV4 15" 4Ω DVC Subwoofer 1500W RMS/4500 MAX

Memphis Audio MJP1044 10" Dual 4 Ohm Subwoofer

PowerBass 2XL-1240D - 12" Compact Dual 4-Ohm Subwoofer

MTX TERMINATOR 500-Watt RMS 2Ω Mono Block Class D Amplifier and MTX Audio 5515-44 55-Series 15" 400W RMS Dual 4-Ohm Subwoofer

Alpine 2-R2-W12D2 Next-Generation 12" R-Series Subwoofers with Dual 2-Ohm Voice Coils

Wet Sounds REVO10FAS4-B 10" Black Marine Subwoofer 4-OHM with Included Silver Saltwater Series Grill

PowerBass 2 XL-1040T XL Series 10" Shallow Mount Subwoofers

Alpine HDZ-W10 10" Subwoofer | 800W RMS, Dual 4-Ohm Coils, Grille incl.

Alpine (2) W10S4 10-Inch Bass Subwoofer w/ Grills, KTA-200M Mono Amplifier & Rux-Knob Bundle

Memphis Audio MM1224 12" Marine Subwoofer with Integrated RGB LEDs and 2 or 4 Ohm Selectable Impedance

Alpine iLX-W670-S Receiver & S2-SB12 PrismaLink™ S2-Series 12" subwoofer Built-In RGB lighting & S2-A55V 5 Channel Amp w/ Rux Bass Knob Bundle

Alpine S2-SB12V 12" Halo S-Series Preloaded Subwoofer Ported Enclosure with ProLink

Memphis Audio MOJO1512 MOJO 7 Series 15" component subwoofer with selectable 1- or 2-ohm impedance

Diamond Audio Two Dmdsh Shallow 12" Dvc 2Ω 200W Rms Subwoofers And One Dmd500.1D 1-Ch 500W Amp W/Remote