MATCH UP W8BMW-S Ultra Flat Subwoofer Upgrade kit for BMW’s. Maximum POWER for BMW sound concepts. The ultra-flat UP W8BMW-S subwoofers are playing extremely dynamically and punchy. Especially the exceptionally rigid fiberglass cone generates maximum sound pressure without distortions. The BMW-specific baskets and connectors allow fast and easy installation into the original mounting positions of all BMW model ranges with under-seat subwoofers. Nevertheless these subwoofers are also perfectly qualified for universal applications. With their 1 x 2 Ohms single voice coil the UP W8BMW-S are the perfect replacement for the original subwoofers of the BMW HiFi sound system. Additionally they are the perfect playmate for our MATCH Upgrade amplifier MATCH UP 7BMW and MATCH UP 7DSP. No matter if these subwoofers are used for a bass upgrade in your BMW or as supplier of low-frequencies in universal concepts, they will definitely add loads of powerful bass for musical enjoyment. 2 x 8 BMW upgrade subwoofer. Fits perfectly into the original mounting positions under the front seats of all BMW model ranges with under-seat subwoofers. Extremely stiff fiberglass cone for maximum sound pressure. 1 x 2 Ohms impedance per woofer. Perfectly combinable with the MATCH UPGRADE amplifiers MATCH UP 7BMW and UP 7DSP. Also ideal for universal use in ultra-flat subwoofer constructions. Power RMS / max. 200 / 400 Watts. 1 x 2 O. Efficiency 1 W / 1 m. Extremely stiff fiberglass cone. Voice coil winding height. +/- 4.0 mm. 239 mm / 9.41. 175 mm / 6.89. 40 mm / 1.57. Lower limiting frequency (-3dB). Highpass: Butterworth; 12 dB/octave; crossover frequency 40 Hz. Additional EQ filter: center frequency 90 Hz; Q factor 3.0; gain -4 dB. Lowpass: Butterworth; 24 dB/octave; crossover frequency 80 – 100 Hz. 60 mm / 2.36. Or 80 mm / 3.15. 28 cm² or 50 cm². 25 cm / 9.84″ or 20 cm / 3.94″. 46 Hz or 46 Hz. Highpass: Self-Define; crossover frequency 40 Hz; Q factor 1.3. Additional EQ filter: center frequency 67 Hz; Q factor 3.0; gain -3 dB. 2 x Subwoofer MATCH UP W8BMW-S. 2 x BMW connection cable. 1 x Mounting material. 1 x Instruction manual.