SXB8W 20 cm (8”) Subwoofer (Pair) Power Rating 100/200 Watts RMS/max. Impedance 4 Ohms, Frequency Range 30 – 300 Hz 216 mm Paper Cone 38,5 mm Voice Coil, Nomex Spider N38 Neodymium Magnet Driver Car-specific Connector Installation Depth: 51 mm, Installation Opening: 180 mm   Fits into: Many BMW E/F/G and MINI R/F Models Refer to Compatibility List Retrofit speakers for many BMW and Mini models at an affordable price? And this in a very good quality? The SIGNUM SXB loudspeaker systems prove that this does not have to be a contradiction. If the original factory sound system simply sounds too thin, these models are spot on. Brilliant highs, balanced mids and powerful bass are the rewarding results.   Everyone knows that it is not easy to retrofit good loudspeakers in BMW vehicles. For this reason, ESX has developed all components in such a way that this “hurdle” is easier to take. Through consistent plug + play implementation, it is quite easy to replace the original speakers without any problems. All connectors, screws and the speakers themselves fit perfectly.