18 inch subwoofer cabinets

Alpine iLX-W670-S Receiver & S2-SB12 PrismaLink™ S2-Series 12" subwoofer Built-In RGB lighting & S2-A60M Amplifier Bundle

Kicker L7S 10" Subwoofer & Amp Bundle – 44L7S104 Square Sub w/ White LED Grill + 48KMA8001 Marine Amplifier – DIY Boat & UTV Bass Upgrade

Kicker (2) 50CWCD154 CompC 15" Subwoofer, Dual 4-Ohm with CXA18001 Amp Bundle

Kicker 48CWR102 CompR 10" Subwoofer, DVC, 2-ohm - Includes Speaker Wire

Kicker (2) 45L7R152 L7R 15" Subwoofer, Dual Voice Coil, 2-Ohm & 52GL715 Grill Bundle

Alpine KTA-200M Mono Power Pack Amp with Alpine W10S4 10" Subwoofer

Kicker 48CWRT124 CompRT 12" Subwoofer, DVC, 4-ohm w/ 47Key5001 Amp Bundle

Kicker 46CWTB102 10" Subwoofer with LED Ring for UTV Pontoon Boats

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

Kicker L7S154 L7S 15" Subwoofer, Dual Voice Coil, 4-Ohm & 52GL715 Grill Bundle

Kicker (2) L7S104 L7S 10" Subwoofer, Dual Voice Coil, 4-Ohm & 52GL710 Grill Bundle

Kicker 48TRTP122 Comp RT 12" Subwoofer Enclosure Package + 47KEY5001 Amp, Bass Knob Bundle

Kicker 46L7T124 L7T L7-Thin 12" Subwoofer, Dual Voice Coil, 4-Ohm & 52GL712 Grill Bundle

Kicker (2) 46L7T104 L7T L7-Thin 10" Subwoofer, Dual Voice Coil, 4-Ohm & 52GL710 Grill Bundle

Memphis MJP1022 MOJO Pro Series 10" Subwoofer With Dual 2-ohm Voice Coils with a MJP1000.1 1000W Monoblock Amplifier and Memphis 4 ga Wire Kit

Kicker (2) 48CWR82 CompR 8" Subwoofer, DVC, 2-ohm - Includes Grill

Kicker 48CWRT122 CompRT 12" Subwoofer, DVC, 2-ohm - Includes Grill

Kicker SoloXS 18" 1-Ohm Sub with LX3000.1 2000W Amp

Kicker Marine Audio System – KM654L White 6.5" LED Speakers (6 Total) & 10" Subwoofer with 48KXMA800.8 8-Channel Amplifier – Pontoon & Wake Boat Up...

Kicker DIY Boat Audio System – KM654L 6.5" LED Speakers (6 Total), 10" Subwoofer & KXMA800.8 Amp – Pontoon & Center Console Upgrade

Kicker Marine Audio System – KM654L 6.5" LED Speakers (6 Total) & 10" Subwoofer with KXMA800.8 8-Channel Amplifier – Pontoon & Center Console Boat ...

Wet Sounds REVO 12 FA S4-B 12" Black 4-Ohm Subwoofer with REVO 12SW-BGRILL 12" Subwoofer Grill with RGB LED kit

Memphis PRX824V2 8in Subwoofer & PRXG8 Protective Grille

Kicker SoloXS 18" 2-Ohm Sub with LX3000.1 3000W Amp