Audiooracle writes:
And to keep this in perspective, Yamaha made a beryllium midrange driver in the late 70s through to late '80s - as used in the NS1000 range.
Regards,
ALSO I will say it again, USHER MAKES THEIR OWN pure Beryllium Midrange Driver and are the only ones to do so!That's untrue. Consider Technical Audio Devices, who first built a beryllium compression driver in 1975, and who continue to build beryllium tweeters and MIDRANGE units to this day. The TAD Coherent Source Transducer is a concentric midrange-tweeter unit.
And to keep this in perspective, Yamaha made a beryllium midrange driver in the late 70s through to late '80s - as used in the NS1000 range.
Regards,