4 hole subwoofer box

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

Memphis Audio PRXE12SFT 12" LED Loaded Subwoofer Box + PRX800.1V2 800W Mono Amp Bundle w/ 4 Gauge Wiring Kit & LED Controller

BOSS Audio Phantom 10" 2100W DVC 4-Ohm Deep Bass Car Subwoofer | P106DVC

MTX AUDIO RT8PT 8 Inch 240 Watt Car Loaded Universal Powered High Performance Amplified Tube Box Vented Subwoofer Enclosure, RCA Connectivity

Alpine SS-SB12 Single 12” S-Series Shallow Preloaded Subwoofer Enclosure

Hertz HMD1 High Power Marine Mono Amplifier with HMS 12 S4-LD-G - 12" 4-Ohm Marine Subwoofer with RGB LEDs, Gray Sport Grille

Alpine Status HDA-V90 Hi-Res 5-Channel Amplifier & RS-W10D4 10-inch R-Series Shallow Subwoofer with Dual 4-Ohm Bundle

Triangle AIO Twin Powered Bookshelf Speakers

Pyle 8 Inch 1600W DVC 4 Ohm Car Audio Subwoofer Speaker Set with 40 Oz Magnet and 1.5 Inch 4 Layer Voice Coil, Black (2 Pack)

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

Memphis Audio MOJO Pro MJP844 8" 1500w Competition Car Subwoofer DVC 4 ohm Subwoofer

MB Quart Dual 10" Subwoofer System Upgrade for Can Am Defender 17-25, 400 Watts

Diamond Audio Dmd250.1D 1-Ch 250W Amp W/Remote And One Dmdsh Shallow 12" Dvc 4Ω 200W Rms Subwoofers

Sony ULT FIELD 5 Bluetooth Wireless Speaker

Klipsch Reference Premiere RP-1000SW 10" High Excursion Subwoofer

Alpine RS-W12D2 12-inch R-Series Shallow Subwoofer with Dual 2-Ohm Voice Coils

Alpine RS-W10D4 10-inch R-Series Shallow Subwoofer with Dual 4-Ohm Voice Coils

QPower Dual 10" Subwoofer Enclosure, Sub Box for Ford F-150 SuperCrew 2004-2008

Monoprice CSW-8: 8" 100-Watt Compact Subwoofer, High-Level Speaker Inputs, Crossover Setting, RCA Inputs

Pyle Bluetooth PA Speaker System, 10" Subwoofer, 1000W MAX, FM Radio, USB/SD, Aux Input, Recording Ability – PPHP1037UB

PowerBass PS-AWB121T - 12" Single Loaded Amplified Truck Box

Monoprice 3-Gang 8.2 Surround Sound Distribution Coupler Wall Plate

Panasonic® 1080p Full HD Blu-ray™ DVD Player for TV with Dolby® Digital Sound, Upconversion, HDMI® Output, USB Input, and Remote, DMP-BD84P-K in Black