5. Boston Acoustics G112-4 12 ($79.95)
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The G112-4 subwoofers feature a hefty foam surround that allows it to give out plenty of cone excursion for a powerfully deep bass. The subwoofer is a particularly powerful choice when looking for a device that will hit hard and clean. It beautifully holds up when driven hard, thanks to its heat-dissipating vents. The single 4ohm voice call allows you to connect an extra subwoofer for extra bass to better suit your sound needs.