18 inch subwoofer cabinets

Diamond Audio DESMB12 12" Slot Vented Passive Subwoofer

Cerwin Vega Marine Bass Upgrade 4 Channel Amplifier with (2) 10" 4-Ohm Black Subwoofers and Install Kit

Kicker (2) 50CVX104 10" CompVX 4 Ohm Subwoofer & 46KW1620 16AWG 20ft Speaker Wire

ATG Transcend Series 2500 Watt Class D Mono Amplifier with (2) 10" 4 Ohm DVC Subwoofers and 0 Gauge Amp Kit

Diamond Audio DESMB8D - Dual 8" Slot Vented Passive Subwoofer Enclosure (2Ω)

Kicker (2) 50CVX104 10" CompVX 4 Ohm Subwoofer & 46QW1220 12AWG 20ft Speaker Wire

Hertz HMD1 High Power Marine Mono Amplifier with 2 HMS 10 S2-LD-SW 10" 2-Ohm Marine Subwoofer with RGB LEDs, White Sport Grille

Kicker 49L7TDF102 Down-Firing 10" L7T 2-Ohm Subwoofer Enclosure & KEY5001 Smart Sub Amp / Processor, Bass Knob Bundle

Diamond Audio DESMB10D - Dual 10" Slot Vented Passive Subwoofer Enclosure (2Ω)

Alpine RS-W12D4 12-inch R-Series Shallow Subwoofer with Dual 4-Ohm Voice Coils

Hertz HMS 10 B2-LD-C - 10" 2-Ohm Marine Subwoofer with RGB LEDs, Black Classic Marine Grille

Wet Sounds ZERO 10 S2 XZ-B - Black 10" ZERO Series Marine Subwoofer with Shallow Mounting Depth and Hidden Mounting Hardware

Cerwin Vega Marine Bass Upgrade 4 Channel Amplifier with (2) 10" 4-Ohm White Subwoofers and Install Kit

Kicker LX1650.1, 15" CompQ 2 Ohm, Subwoofer & 1650w Mono Class-D Amp Bundle (51LX16501)(51CWQ152)

Kicker 48PXA6001 Weatherproof Powersport Mono Amp & (2) 12" 4 Ohm Marine Subwoofer ( White Grill ) Includes LED Remote

Hertz HMS 12 S2-LD-G - 12" 2-Ohm Marine Subwoofer with RGB LEDs, Gray Sport Grille

Alpine RS-W12D2 12-inch R-Series Shallow Subwoofer Dual 2 Ohm & Grill Bundle

Kicker LX3000.1, (2) 15" CompQ 4 Ohm, Subwoofer & 3000w Mono Class-D Amp Bundle (51LX30001)(51CWQ154)

Hertz Venezia V1 Monoblock Subwoofer Marine Amplifier with 2 HMS 12 S2-LD-SW 12" 2 Ohm Marine Subwoofer with RGB LEDs, White Sport Grille

Hertz HMS 12 B2-LD-W - 12" 2-Ohm Marine Subwoofer with RGB LEDs, White Grille

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

QPower QBOMB12VL 12 Inch Dual Vented Ported Car Subwoofer Sub Box Enclosure

QPower QBASS Dual 10 Inch Heavy Duty MDF Material Car Audio Subwoofer Enclosure Boxes with Shared Slot Port Vent and Dual Chamber Design, Charcoal

QPower Quad 4 Hole 12 Inch Sealed Divided Speaker Box Subwoofer Enclosure