I have only basic 6-speaker system without amp, which was sold only in europe..so radio unit is powering speakers /doesnt have crossovers built-in/ . I was thinking that disconnecting in dash speakers can help because radio unit will not power two, now unnecessary speakers..I`m assuming that my new 2-way component /with crossover/ system is covering all frequencies so midranges in dash arent necessary..

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*** X5 3.0i 6-speed manual ***