4 hole subwoofer box

Wet Sounds Zero Series 4Ω 12” Subwoofer w/ XZ Black Grille and PORTED-12-ENC 12" Rotomold Ported Enclosure

Hertz ML 2500.3 Millie Legend Series 4 Ohm 1400 W Max 10" Subwoofer with MPG 250.3 Aluminium Grille

Kicker (2) 51MWF104 - MWF 10-Inch Premium Marine Subwoofer (free-air) 4-ohm & 48KXMA9005 Marine Amp Bundle ( Includes LED Remote )

Kicker 51MWF124 - MWF 12-Inch Premium Marine Subwoofer (free-air) 4-ohm & 48KXMA9005 Marine Amp Bundle ( Includes LED Remote )

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

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

Memphis Audio 2 SRXS1044V 10" Street Reference Dual 4-Ohm Shallow Mount Subwoofers with SRX600.1V Mono 1-ohm 600 Watt Amplifier

PowerBass 2 S-10T Shallow Mount 10" 4-Ohm Subwoofer

Kicker 10" LED Marine Subwoofer – Charcoal, 4 Ohm Free-Air (45KMF104) – Boat Audio Bass Upgrade

Kicker (2) 50CVX124 CompVX 12-Inch Subwoofer, Dual 4-Ohm & 46KW1620 16AWG 20ft Speaker Wire

Kicker 48CWRT102 Subwoofer BR-DS10U Add-On & 47KEY5001, Bass Knob Bundle Compatible With 2021-2025 Ford Bronco 4-Door Rear Door

PowerBass 2 S-10TD Shallow Mount 10" Dual 4-Ohm Subwoofer + 1 ASA3-600.1D Amplifier

Kicker 45L7R124 L7R 12-Inch (30cm) Subwoofer, Dual Voice Coil, 4-Ohm & 46QW1220 12AWG 20ft Speaker Wire

Kicker 51MWF124 - MWF 12-Inch Premium Marine Subwoofer (for free-air applications) 4-ohm

Hertz Marine Audio System – HMX White 6.5" Speakers (4 Total) RGB LED, 10" Subwoofer & SP-4.500 4 Ch. Marine Amplifier – Complete Pontoon & Center...

Kicker (2) 51MWF124 - MWF 12-Inch Premium Marine Subwoofer (free-air) 4-ohm & 48KXMA12002 Marine Amp Bundle

Wet Sounds REVO 10 HP S4 V3 - REVO Series 10" High Power 4 Ohm V3 Subwoofer, Black and Wet Sounds REVO 10 FA SW-W GRILLE V3 - White Salt Water Gril...

Kicker 48CWRT84 CompRT 8" Subwoofer, DVC, 4-ohm - Includes Speaker Wire

PowerBass 2 S-1204D 12" Dual 4-Ohm Subwoofers + 1 ASA3-600.1D ASA Series Amplifier

Kicker Marine KPX500.1 Powersports Amp & (2) 12" 4 Ohm Premium Marine Subwoofer (Charcoal Grill ) Includes LED Remote

Wet Sounds REVO 12 FA S4 V3 - REVO Series 12" Free Air 4 Ohm V3 Subwoofer, Black and Wet Sounds REVO 12 ADP XZ-B Grille Kit 12” Revo Sub Grille Ki...

Wet Sounds REVO 12 FA S4 V3 - REVO Series 12" Free Air 4 Ohm V3 Subwoofer, Black

Kicker 47KEY2004 4-Channel DSP Smart Amplifier, 4x50W w/ 51PTRTP10 10" 400w Powered Down Firing Loaded Subwoofer Enclosure Bundle

Kicker 47KEY2004 4-Channel DSP Smart Amplifier, 4x50W w/ 51HS10 Hideaway Compact Powered Subwoofer, 10-Inch Bundle