4 hole subwoofer box

Kicker Marine KPX500.1 Powersports Amp & (2) 12" 4 Ohm ( White Grill ) Subwoofer Audio Upgrade

Kicker (2) 50CWCS124 CompC 12" Subwoofer, Single 4-Ohm with CXA8001 Amp Bundle ( Includes Bass Knob )

Kicker Marine KPX500.1 Powersports Amp & (2) 10" Free Air 4 Ohm ( Charcoal Grill ) Subwoofer Audio Upgrade

Kicker 51MWE124 - MWE 12-Inch Premium Marine Subwoofer (Enclosure) 4-ohm & 48KMA6004 Marine Amp Bundle

Kicker (2) 45L7R104 L7R 10" Subwoofer, Dual Voice Coil, 4-Ohm & 52GL710 Grill Bundle

Wet Sounds REVO 12 FA S4 V3 - REVO Series 12" Free Air 4 Ohm V3 Subwoofer, Black and Wet Sounds REVO 12 XS-W-SS GRILLE V3 - White & Stainless XS St...

Kicker (2) 51MWF124 - MWF 12-Inch Premium Marine Subwoofer (free-air) 4-ohm & 48KXMA8004 Marine Amp Bundle

Kicker Pontoon - Tritoon Boat Premium Audio Upgrade, (4) 6.5" LED Marine Speakers, 10" Subwoofer tube & KXMA 5Ch. Marine Amplifier Bundle

Wet Sounds REVO 10 FA S4 V3 - REVO Series 10" Free Air 4 Ohm V3 Subwoofer, Black and Wet Sounds REVO 10 SW-W GRILLE V3 - White Salt Water Grille fo...

Memphis MM1024 10" Marine Subwoofer and SRXPT SRX 4" Pro Tweeters and SRXP62V2 SRX Pro 6.5" with All-In-One enclosure Compatible with Ford bronco t...

Kicker (2) 51MWE104 - MWE 10-Inch Premium Marine Subwoofer (Enclosure) 4-ohm & 51KXMA15001 Marine Amp Bundle

Hertz HMS 10 B4-LD-W - 10" 4-Ohm Marine Subwoofer with RGB LEDs, Black Classic Marine Grille

Kicker 48PXA6001 Weatherproof Powersport Mono Amp & (2) 8" TB 4 Ohm Loaded Enclosure Subwoofer

Focal SUB 10 DUAL 10" Subwoofer, Dual 4-Ohm Voice Coil, 250W RMS - 500 W MAX

Hertz Dieci Series DS-303 12" (300mm) 150 Watt RMS 4-Ohm SVC Subwoofer

Wavtech THINPRO10-4 10” Professional Series Shallow 4 Ohm Subwoofer (PAIR)

Kicker 51MWE124 - MWF 12-Inch Premium Marine Subwoofer (For Enclosures) 4-ohm and 51MWG12W White Grill Bundle

Kicker 48PXA6001 Weatherproof Powersport Mono Amp & 12" 4 Ohm Premium Marine Subwoofer (Charcoal Grill )

Hertz Venezia V1 Monoblock Subwoofer Marine Amplifier with 2 HMS 12 S4-LD-G - 12" 4-Ohm Marine Subwoofer with RGB LEDs, Gray Sport Grille

Wet Sounds REVO 12 FA S4 V3 - REVO Series 12" Free Air 4 Ohm V3 Subwoofer, Black and Wet Sounds REVO 12 SW-W GRILLE V3 - White Salt Water Grille fo...

Kicker (2) 51MWE124 - MWE 12-Inch Premium Marine Subwoofer (Enclosure) 4-ohm & 48KMA8001 Marine Amp Bundle

PowerBass XL-1040TD - 10" Dual 4-Ohm Shallow Mount Subwoofer

Kicker 48CWRT102 Subwoofer BR-DS10U Add-On Compatible With 2021-2025 Ford Bronco 4-Door Rear Door

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