Nominal diameter ( woofer ): 100mm / 4" midrange Nominal diameter ( tweeter ): 25mm / 1" Tweeter Impedance: 4 Ohm Frequency response: 70 Hz – 24 kHz Cross frequency: 5000 Hz Power handling (RMS): 70 Watts Power handling (max): 110 Watts Efficiency (SPL): 87 dB Resonance frequency: 77 Hz (midwoofer) Xmax (p2p): 7 mm Compatible with: BMW: Z4 E89 roadster front G29 roadster front 1-series E81 3-door hatchback front E82 coupe front E87 5-door hatchback front E88 cabriolet front F20 5-door hatchback front F21 3-door hatchback front F40 5-door hatchback front / rear F52 4-door sedan front / rear 2-series F22 coupe front F23 cabriolet front F44 gran coupe front / rear F45 active tourer front / rear F46 gran tourer front / rear F87 M2 coupe front G42 coupe front U06 active tourer front / rear 3-series E90 sedan front E91 touring front / rear E92 coupe front E93 cabriolet front F30 sedan front / rear F31 touring front / rear F34 gran turismo front / rear F35 sedan long version front / rear F80 M3 sedan front / rear G20 sedan front / rear G21 touring front / rear G28 sedan front / rear G80 M3 sedan front / rear 4-series F32 coupe front F33 cabriolet front / rear F36 cran coupe front / rear F82 M4 coupe front F83 M4 cabriolet front G22 coupe front G23 cabriolet front 5-series E60 sedan front / rear E61 touring front / rear F07 gran turismo front / rear F10 sedan ( F18 ) front / rear F11 touring front / rear G30 sedan ( G38 ) front / rear G31 touring front / rear 6-series E63 coupe front E64 cabriolet front F06 gran coupe front / rear F12 coupe front F13 cabriolet front G32 gran turismo front / rear 7-series E65 sedan front / rear E66 sedan long version front / rear F01 sedan front / rear F02 sedan long version front / rear G11 sedan front / rear G12 sedan long version front / rear 8-series G14 cabriolet front G15 coupe front G16 gran coupe front / rear I12 i8 roadster front X1-series E87 SUV front F48 SUV front / rear F49 SUV long version front / rear U11 SUW & iX1SUV front / rear X2-series F39 SUV front / rear X3-series E83 SUV front / rear F25 SUV front / rear G01 SUV front / rear F97 X3 M SUV front / rear G08iX3 SUV front / rear X4-series F26 front / rear G02 front / rear X5-series E70 SUV front / rear G05 SUV front / rear X6-series E71 SUV ( E72 ) front / rear G06 SUV front / rear X7-series G07 SUV front / rear iX I20 iX SUV front / rear MINI: R60 with Harman/Kardon Sound System front / rear R61 with Harman/Kardon Sound System front / rear F54 with Harman/Kardon Sound System front / rear F55 with Harman/Kardon Sound System front / rear F56 with Harman/Kardon Sound System front / rear F57 with Harman/Kardon Sound System front / rear F60 with Harman/Kardon Sound System front / rear