Audison Prima APBX 8 R 8 Passive Compact Subwoofer Sub Ported Enclosure 250w. The aim was to exploit the natural boost in output found in most cars below 60 Hz known as cabin gain. Ultra-low profile 5.16 in. / 131 mm box with slot-ported design perfectly tuned to fully exploit the APS 8 R driver. 2S² (2 Sides/2 Sounds) design provides the ability to choose between Down-Firing mounting to increase the low-frequency extension and Up-Firing install to obtain more punch and definition. Levelling feet with velcro inserts included for a secure grip with the carpet while maintaining easy removal. SSP (Sub Smart Plug) features both traditional push contacts and a Plug-&-Play terminal block to easily configure the impedance as required and provides a quick release. Rounded corners allow easy positioning in the trunk and act as reinforcement to reduce enclosure resonance. Special designed cone-dustcap-basket geometry which guarantees a long linear excursion capability (9 mm, one-way). Massive driver motor assembly, optimized with FEM (Finite Element Modeling) for perfect control under high excursion conditions. Water-repellent pressed paper 8 in. Cone, featuring a profile developed with FEM and optimized with the Klippel Scan Vibrometer. Specifically developed to be combined with either the AP8.9 bit (2 CH bridged) or AP4.9 bit /AP4 D (2 CH bridged) amplifiers taking advantage of the bass boost feature and integrated parametric equalizer of the built-in DSP. Sturdy metal grid included for a total protection of the subwoofer driver. The 8-inch single 4 ohm voice-coil subwoofer has a powerful motor that maximizes efficiency in combination with the AP8.9 bit amplifier. The low-resonant frequency of the subwoofer, matched to the reflex enclosure keeps excursion low within the entire audio spectrum, allowing also the use with a pair of AP4.9 bit / AP4 D bridged channels, capable of delivering 260 W rms. Prima APBX 8 R. The APBX 8 R loaded enclosure was developed with reflex loading, with tuning designed to concentrate SPL in the lowest frequency range. Magnet Material HIGH DENSITY FLUX FERRITE. Cone Material COTTON-FIBRE PRESSES PAPER CONE. Dimension A 470 mm. Dimension B 334 mm. Dimension C 109 mm. SSP (Sub Smart Plug) terminal block Provided with a Plug&Play connector to be able to disconnect the box easily and safely. 2S² (2 Sides / 2 Sounds) design Provides the ability to select between Down-Firing positioning to increase the low frequency extension and Up-Firing install to obtain more punch and definition. To be eligible for a return, your item must be unused and in the same condition that you received it, and it must be in the original packaging. By visiting our website and/or purchasing something from us, you are deemed to have accepted these terms and conditions. A downloadable software product or a software, voucher codes, gift cards or gift wrapping service. Highly recommend this vendor. This item is exactly what I was after at a brilliant price. Great communication and the item was well packaged. Thank you very much. Great stuff – thanks! Ordered Friday 1.30 arrived Saturday 2.30 amazing service well packaged and beat everyone else on price. Item arrived on time, well packaged and exactly as described. Delivered on time and packaged suitable for courier. Product box protected well by extra packing. Good price, good service. Item came as described at a great price!