Powerful upgrade for a discrete bolide: If there is demand for additional bass the MS 8B-BMW. 2 car specific 8 under-seat subwoofers with neodymium magnet are the perfect choice. Due to their flat yet robust basket construction they fit perfectly into original under-seat enclosures. Their high-efficient neodymium magnet system features fringe-field magnet structure for excellent heat dissipation and high linearity. The MATCH woofer MS 8B-BMW. 2 is a winning-around sound improvement for vehicles featuring solely 160 mm woofers – and definitely a must if powerful amps are on duty. 150 / 300 Watts Frequency range 30 – 140 Hz Sensitivity 90 dB 1W / 1m Impedance 4 Ohms Diameter 200 mm / 8. 1-series E81 3-door 2004 – 2011 Under-seat E82 Coupe 2004 – 2011 Under-seat E87 5-door 2004 – 2011 Under-seat E88 Convertible 2004 – 2011 Under-seat F20 5-door 2011 – Under-seat F21 3-door 2011 – Under-seat 2-series F22 Coupe 2011 – Under-seat F23 Convertible 2011 – Under-seat 3-series E90 Sedan 2005 – 2011 Under-seat E91 Touring 2005 – 2011 Under-seat E92 Coupe 2005 – 2011 Under-seat E93 Convertible 2005 – 2011 Under-seat F30 Sedan 2012 – Under-seat F31 Touring 2012 – Under-seat F34 Gran Turismo 2013 – Under-seat F35 Sedan Long Version 2012 – Under-seat 4-series F32 Coupe 2014 – Under-seat F33 Convertible 2014 – 5-series E60 Sedan 2003 – 2010 Under-seat E61 Touring 2003 – 2010 Under-seat F10 Sedan 2011 – Under-seat F11 Touring 2011 – Under-seat 6-series F12 Convertible 2011 – Under-seat F13 Coupe 2011 – Under-seat 7-series F01 Sedan 2008 – Under-seat X1 E84 SUV 2009 – 2012 Under-seat X3 E83 SUV 2003 – 2010 Under-seat F25 SUV 2010 – Under-seat X4 F26 SUV 2014 – Under-seat X5 E70 SUV 2006 – 2013 Under-seat X6 E71 SUV 2008 – Under-seat.