electronic battery powered speaker

4) HIFONICS HFX12D4 12" 2400W Car Audio DVC Subwoofers Power Bass Subwoofers

B&C 21-in Woofer w/4 Ohms Impedance & 3400 Watts Continuous Power Handling Capacity & Neodymium Magnet 21DS115-4

Hifonics 12" 800 Watt 4 Ohm DVC Car Audio Subwoofer Power Bass Sub (3 Pack)

RCF 18-in Woofer w/neodymium transducer, the lowest power compression, 8 Ohms 2400 Watts Max LF18N401

Q Power Dual 10 Inch Vented Port Subwoofer Sub Box w/ Bedliner Spray (2 Pack)

Pyle 10" In-Wall/In-Ceiling Subwoofer, 360W Peak Power - PDIWS10

Kanto Kanto SUB8 8" Powered Subwoofer Bundle with AudioQuest Jack Russell 4m

Polk Audio Monitor XT10 10" Powered Subwoofer

Kanto SUB8 8" Sealed Powered Subwoofer

Fluance Fi70WW Three-Way Wireless High Fidelity Music System with Powerful Amplifier & Dual 8" Subwoofers

SVS SB-3000 R|Evolution 13" Powered Subwoofer

SVS SB-3000 R|Evolution 13" Powered Subwoofers - Pair

Polk Audio Monitor XT12 12" Powered Subwoofer

SVS SB-5000 R|Evolution 15" Powered Subwoofer

JBL Professional EON718S 18 Inch Powered PA Subwoofer

Yamaha NS-SW100 Powered Subwoofer Bundle w/ AudioQuest Jack Russell Cable

Kanto SUB6 6 In Sealed Powered Subwoofer

RadioShack 450W Party Tower PA Speaker With Dual 15" Woofers, LED Lights, Bluetooth And FM Radio, Powerful Sound System For Home, Events, And Parties

SVS PB-5000 15 Inch Ported Powered Subwoofer (Piano Gloss)

Kanto SUB6 6" Powered Subwoofer Bundle with AudioQuest Jack Russell Subwoofer Cable - 4m

Bose TV Speaker (2nd Gen)