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Showing results for tags 'e38 non dsp amplifier'.
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All good things must come to an end over the new year break I removed my 2 Pioneer 4 channel amps from.my E38 and installed them in my sons Passat (all 8 speakers in the doors upgraded). This meant no sound in the E38. As I had never got arround to upgrading the rear door speakers I reconnected the rear speaker signal from the radio to the X605 connector, and reconnected the rear speakers to the X606 connector. All worked fine so last weekend I installed 2 Sony 2 way amps and an SSL active crossover. This is where I hit trouble. When I power on the car all the speakers are playing and it sounds great - for about 5 seconds - then the front speakers and subs stop making sound. I connected my phone using an aux cord to the input of the SSL active cross over and the crossover and amps are working perfectly. So I am faced with sone cutout operating in the BMW radio unit. I must admit being a little bemused. It work perfectly with all aftermarket amps, or all OEM amps, but not 1/2 and 1/2. Tomorrow I will diconnect the X605 connector taking the OEM amp out of the equation and try connecting the radio output signal back into the active cross over. The only thing I can think of is it is detecting some impedance mismatch and a protection circuit is activating. Fun for the weekend. If anyone know any tips I'd love to hear them. I'm not keen on pulling everything out to eyeball the radio hidden as it is behind the amp. Jim
