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Originally Posted by Chris F.
Great writeup Ken. Why on earth manufacturers do this is beyond me. How are other brands -- MB, Audi, Lexus, Acura, Volvo, etc? Are they that bad too?
I was really surprised that the rear speakers have such 'holes' in the frequency response and don't even play full range! I though it was a two way system back there -- apparently there are no tweeters.
I have the regular (Non DSP) stereo in my X5 and my shop did the same thing you guys did for a subwoofer -- they just tapped into the low frequency wires with a high to low level converter. We added a Alpine 4313 to adjust the bass and all is well...
Have you guys had a chance to play with the new Logic 7 systems yet? I'm not sure I want to even touch that one, I heard they are using fiber optics and an interface similar to Firewire now? Yeesh....
Chris
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Thanks for the kind words.
Optical MOST buses are becoming very popular. The aftermarket is working on the MOST protocol to make a MOST gateway to allow inputs and outputs, but none have arrived yet. Mercedes and Volvo are two who use the optical - Mercedes on everything, and Volvo on at least the XC90. You address these the same way we did the X5 system.
I haven't played with the Logic 7 systems yet but I believe the innovation is all in the UI - the output side is about the same as the X5 we did, I suspect. Only so many ways to push around a moving coil, after all : )
In one way I respect what BMW did with the rear speakers - almost. Rear speakers don't help sound quality. Rear vocals and highs confuse the stereo image - but many people want them anyway. What they SHOULD have done IMO is programmed the DPS to essentially do the same thing, but include full-range drivers, and then it's a selectable feature.