Join Date: Dec 2008
Location: San Diego County, CA, USA
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From the perspective of manufacturers of "real good" speakers, I doubt that they'd want to give the impression that current Bluetooth audio fidelity represents the limit of what their products are capable of. If there is reason enough to generally avoid integrating amplifiers in hi-fi speakers in the first place, and many would argue that there is, then Bluetooth integration is definitely out (until market forces dictate otherwise, which seems unlikely in this market for the foreseeable future). The market for existing Bluetooth speakers is very different from the hi-fi market, of course.
As for Bluetooth integration in receivers for the surround and back channels, I think that this (or a similar solution) will eventually happen when the audio quality is high enough, and competition and market forces compel the manufacturers. Until then, I think they'd rather make some money on separate wireless solutions, either current Bluetooth for those who don't mind compromising some quality for neatness, convenience, and lower cost, or higher quality proprietary solutions that they can charge a lot more for.
By the way, one major barrier is that speakers still need amplification, which means having to buy and install additional equipment anyway, so one additional component for wireless transmission is not going to discourage those who are determined to avoid running 2-4 speaker cables along or inside a wall. If hi-fi speakers had built-in amplifiers as a rule, then things would be different, but short of that people would need two receivers, both with Bluetooth integrated, and that seems even less integrated than a single receiver plus a few cables run around the viewing area.