Proline X P8D-S | Dual 8" Sealed Subwoofer Enclosure | V3

Two drivers. One sealed enclosure. The Proline X P8D-S is a dual 8" sealed box built for installs that need compact footprint and controlled output — front stage support, rear fill, or a clean under-seat dual setup where trunk space is limited. Sealed alignment keeps the low end tight and transient-accurate. There is no port to tune around, no flare to worry about, and no boost peak — just a flat, predictable response curve that works with your amplifier's subsonic filter rather than against it. The enclosure is CNC-cut from 3/4" Langboard Elite MDF and assembled by hand at our facility in Tullahoma, TN. V-groove and dado joinery locks every panel before adhesive is applied. Each driver bay is 0.40 ft³ net — total 0.80 ft³ — sized to work with a wide range of 8" drivers without requiring additional damping material or volume correction. The 0.75" single baffle accommodates a 7.25" cutout with up to 11.5" of mounting depth, which covers virtually every 8" driver on the market including high-excursion competition drivers. Two independent terminal cups handle wiring. Each driver gets its own recessed ABS/Carbon Fiber Composite terminal cup with stainless steel hardware, aluminum landing plates, and copper ring terminals — pre-wired internally with 12g OFC speaker wire. Finish options are Dark Gray Trunkliner or Plush Black. Shipping is included.