OPTISOUNDBMW4: Optisound 4 Inch BMW Plug and Play Component Speaker - Direct Replacement Front door speakers - BMW adaptors and cables included - OEM Upgrade Plug and Play BMW Front Door speaker upgrade Easiest plug play installation due to car-specific baskets and harnesses, High-end crossover with reference curve setup, System can be used as passive or semi-active system. - 2-way, 4” (100mm) - 115 watts RMS - 345 watts Peak - 55 watts Minimum input - Sensitivity 90dB - Frequency response 55Hz – 25kHz - Impedance 4Ω - Recommended amplifier: POWERBOX65.4 Vehicle Fitment - Front Doors Series Type Model Model year Front door .
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