Trending 12 inch 300w loaded subwoofer box plexiglass speaker box subwoofers for car sound system - AliExpress
Q-Logic QB-212.4 Dual 12" bandpass subwoofer box at Crutchfield
Amazon.com: Dual Electronics BP1204 High Performance 12 inch Car Audio Subwoofers in a Tuned Bandpass Enclosure with Blue illumiNITE LED Illumination and Plexiglass Viewing Windows and 1,100 Watts of Peak Power : Electronics