18 inch powered subwoofer

Audison AV-12-D2-II 300MM (12 INCH) 2 Ohm DVC Subwoofer

Alpine S2-W8D4 8" S-Series Dual 4 Ohm Car Subwoofer & S2-S40C Next-Generation S-Series 4" Component 2-Way Speaker Set

Alpine iLX-W670-S Receiver & S2-SB10 PrismaLink™ S2-Series 10" subwoofer Built-In RGB lighting & S2-A55V 5 Channel Amp w/ Rux Bass Knob Bundle

Alpine iLX-W670-S Receiver & (2) S2-SB12 PrismaLink™ S2-Series 12" subwoofer Built-In RGB lighting & S2-A120M Amplifier w/ Rux Bass Knob Bundle

PowerBass XL-1240SS - 12" Single 4-Ohm Powersports Subwoofer with Grill

Wet Sounds REVO12FAS4-B 12" Black Marine Subwoofer 4-OHM with Included Black XS Series Grill

Wet Sounds Marine REVO White/Stainless XS Grill Boat Speaker Bundle (2) 8" & 10" Subwoofer, Center Console, Bay Boat Upgrade

MTX TERMINATOR 500-Watt RMS 2Ω Mono Block Class D Amplifier and Two MTX Audio TN12-04 Terminator 12" 200W RMS 4-Ohm Subwoofer

MTX TERMINATOR 1000-Watt RMS 1Ω Mono Block Class D Amplifier and Two MTX Audio 5512-44 55-Series 12" 400W RMS Dual 4-Ohm Subwoofer

Diamond Audio Dmd250.1D 1-Ch 250W Amp W/Remote And One Dmd 10" Dvc 4Ω 200W Rms Subwoofers

MB Quart Reference 12" Subwoofer with 3" Voice Coils for Car Audio, Vented Motor Assembly & Pressure Treated Double Stitched Foam Surround, 1200W

Wet Sounds Marine Zero Series Black XZ Grill Boat Speaker Bundle (4) 8" & (2) 10" Subwoofer, Center Console, Bay Boat Upgrade

Wet Sounds - Two pairs RECON 6-S 6.5" 60-W RMS Coaxial Speakers With Silver XS Grille And Cone & Two RECON 10 FA-S 10" Free Air Subwoofers

MTX TERMINATOR 1000-Watt RMS 1Ω Mono Block Class D Amplifier and Two MTX Audio 7515-44 75-Series 15" 750W RMS Dual 4-Ohm Subwoofer

Kenwood XM1041BL eXcelon Motorsports 10" All-Weather Outdoor Subwoofer with Adjustable Lighting - Each (Black)

Hertz Marine Audio System – HMX White 6.5" Speakers (4 Total) RGB LED, 10" Subwoofer & Venezia-Compact-V4C – Complete Pontoon & Center Console Boat...

Alpine S2-W8D2 8" S-Series Dual 2 Ohm Car Subwoofer, 900W Max, 300W RMS

Wet Sounds REVO 10 FA S2 V3 - REVO Series 10" Free Air 2 Ohm V3 Subwoofer, Black and Wet Sounds REVO 10 SW-B GRILLE V3 - Black Salt Water Grille fo...

MTX 12-Inch 1200-Watt Car Audio Dual Loaded Subwoofer Box Enclosure & Crunch PowerDriveX 1000 Watt 2 Channel Exclusive Blue A/B Car Stereo Amplifier

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

MTX TERMINATOR 500-Watt RMS 2Ω Mono Block Class D Amplifier and MTX Audio 5510-44 55-Series 10" 400W RMS Dual 4-Ohm Subwoofer

Memphis Audio 2 VIV1212 VIV 12" 1 OR 2 OHM Subwoofers with MJP3000.1 Monoblock Subwoofer Amplifier

Clarion CMSP-101RGB-2 10" Marine Subwoofer with RGB LEDs, Single 2-Ohm, 250 Watts

Memphis Audio SRX300.1V Mono 2-Ohm 300 Watt with SRX1044V 10" Street Reference Dual 4-Ohm Subwoofer