JL Audio CP108LG-W3v3 8" Loaded Sub Enclosure This incredible MicroSub™ subwoofer system delivers the kind of output and extension that is normally possible with only much larger systems. The key to its performance lies in the precise tuning of its 8W3v3 subwoofer driver into an efficient slot-ported design. Extensive interior bracing permits the use of thinner wall material that maximizes the enclosure's internal volume relative to its exterior volume. The port wraps around two walls of the enclosure to produce the necessary low tuning frequency that ensures excellent extension and response smoothness. The flared port entry and exit further enhance sound quality by minimizing air-flow noises through the port. This subwoofer system is shipped wired, loaded and ready to connect via a five-way binding post terminal. FeaturesFinish: Black, high-grade automotive carpet with silver "JL AUDIO" embroidery on front baffle.A steel mesh grille is included to protect the subwoofer driver.Construction: CNC-Cut High-Grade MDFRecommended amplifier power: 100 - 250WNominal Impedance: 4 Ohm General SpecificationsContinuous Power Handling (RMS): 250 WSystem Nominal Impedance: 4 OEnclosure Type: Slot-ported, Low-profileFinish: Black carpetGrille Included: Black Steel Mesh Physical SpecificationsExternal Width (W): 18.625 in / 473 mmExternal Height (H): 11.0 in / 279 mmExternal Depth (D1): 5.125 in / 130 mmNet Weight: 17.40 lb / 7.89 kg