Logitech Z407 Bluetooth Speaker System - 40 W RMS - Black
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5 Core 5 Inch Subwoofer Car Speaker 40 Watt RMS Mid Range DJ Sub Woofer 4 Ohm Premium Magnet Raw Replacement Stereo Subwoofers -CS-05-74 Pair | Reverb
5 Core 8" Full Range Subwoofer Car Audio Speakers, RMS 40W Peak 400W, 4 Ohm Car Vehicle Audio Full Range Drivers, Wide Range DIY Loudspeaker Woofer Replacement Black SP 872 B - Walmart.com
Bluetooth Speakers Denver Electronics 40 W RMS Black 400 W
ZXI 3.5" Full-Range Speakers with Kevlar Cone 40 Watts Rms 4-Ohm | Car speakers, Subwoofer, Ds18