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Amazon.com: Car Audio Dual 12" SPL Bass Subwoofer Labyrinth Vent Sub Box Stereo Enclosure : Electronics
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Ground Zero - GZRW 8XSPL - 8″ high quality SPL subwoofer with reinforc| Maverick's Custom Motorsports
Street Sound Electronics - AAA 200 EURO BOX SPL 152 Db:Per rinnovo nostro magazzino SVENDIAMO questo bellissimo box(solo il box senza subwoofer e amplificatore) sia per SPL puro che per elevata pressione
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Amazon.com: Atrend Digital Designs 15” Dual Vented SPL Subwoofer Enclosure - SPL-Tune Subwoofer Box Improves Audio Quality, Sound & Bass - Woofer Specific Enclosure Certified - Made in USA : Electronics
![Hertz SX 250D 10" dual 2-ohm voice coil component subwoofer — designed for SPL competition at Crutchfield Hertz SX 250D 10" dual 2-ohm voice coil component subwoofer — designed for SPL competition at Crutchfield](https://images.crutchfieldonline.com/ImageHandler/trim/750/457/products/2018/27/301/g301SX250D1-F.jpg)