Andrew/Dave: By way of odd, somewhat related observations, I recently got a new receiver which has DTS Neo:6 surround decoding. There is slight phasiness about the Neo:6 sound when used on a pure Blumlein X/Y recording that made me think it might work to externalize the stereo image when using headphones. (The surround sound seems shoved away from the listener toward the side walls of the hall.) After reading your posts, it tried listening to the front channels only on headphones. It definitely works. Of course, that leaves open the question of what to do with the rear channels. I read that some think DTS Neo:6 is good for decoding Ambisonic UHJ recordings, but it is clearly doing more than the old UHJ decoders, for which the formulas are readily available on the Internet and which did not seem to have the same kind of phasiness. Does anyone know anything about the theory behind DTS Neo:6? John
