ported under seat subwoofer box

Kicker 51HS12 Hideaway Compact Powered Subwoofer, 12-Inch

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

Q-Power Shallow Single 12 Inch Heavy Duty Sealed MDF Material Truck Audio Subwoofer Enclosure Box with Durable Carpeted Exterior, Charcoal Gray

Q-Power Single 10-Inch Universal Downfire/Behind Seat Subwoofer Sub Box (2 Pack)

HIFONICS 12" 1600W Car Audio Subwoofers, DVC Speakers (2 Pack), Bundled with QPower Ported Enclosure Box

QPower QBOMB15VL Single 15" Vented Ported Car Subwoofer Sub Box Enclosure QBOMB

Kicker 51HS12 Hideaway Compact Powered Subwoofer, 12-Inch & 46KISL K-Series Interconnect, Speaker Wire To RCA Adapte

QPower SHALLOW110 Single 10 Inch Vented Shallow Subwoofer Sub Box Enclosure

VEVOR 8" 400W Underseat Car Subwoofer, Slim Powered Car Subwoofers Under the Seat, Low Profile Audio Sub Built-in Amplifier, Black

QPower QBOMB8V Dual 8 Inch Vented Port Subwoofer Sub Box with Bedliner Spray

QPower QBOMB12TB Dual 12" Triangle Ported Car Audio Subwoofer Box Enclosure

VEVOR Subwoofer Bass Package, 12 in, 245W RMS, Complete Car Audio Subwoofer and Amp Package, with Loaded Enclosure, Built-in Amplifier, Black

Q Power QBomb 10 Inch Single Vented Subwoofer Sub Box with Black Bedliner Spray

QPower QBOMB8VL Single 8 Inch Vented Ported Car Subwoofer Sub Box Enclosure

QPower QTW12 Single 12" Sealed Car Audio Subwoofer Sub Box Enclosures, Pair

QPower Single Triangle Car Audio Ported Subwoofer Box, Fits Most 12-Inch Subwoofers - Deep Bass MDF Enclosure, Tuned to 54 Hertz, 2.2 Cu Ft Air Space

Wet Sounds REVO 12 HP S4 V3 12" High Power 4 Ohm Subwoofe with REVO 12 XS-S GRILLE V3 - Silver XS Style Grille and PORTED-12-ENC 12" Rotomold Porte...

Wet Sounds REVO 12 HP S4 12" High Power 4 Ohm Subwoofer with REVO 12 SW-W GRILLE V3 - White Salt Water Grille and PORTED-12-ENC 12" Rotomold Ported...

Wet Sounds REVO 12 HP S4 V3 - 12" High Power 4 Ohm Subwoofer with REVO 12 ADP XZ-B Grille Kit and PORTED-12-ENC 12" Rotomold Ported Enclosure

Wet Sounds REVO 12 HP S4 V3 12" High Power 4 Ohm Subwoofer with REVO 12 XW-B GRILLE V3 - Black XW Style Closed Grille and PORTED-12-ENC 12" Rotomol...

Alpine S2-A55V S-Series 5-Channel Amplifier & S2-SB12V 12" Halo S-Series Preloaded Subwoofer Ported Enclosure

Wet Sounds REVO 12 HP S4 V3 12" High Power 4 Ohm Subwoofer with REVO 12 SW-B GRILLE V3 - Black Salt Water Grille and PORTED-12-ENC 12" Rotomold Por...

QPower Non HD Crew Cab Behind Seat Dual 12 Inch Subwoofer Box (2 Pack)