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Old November 12th 11, 10:21 PM posted to uk.rec.audio
Phil Allison[_2_]
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Posts: 635
Default Anyone Remember Gale's Chrome Ended Speakers?




( Heavy weight name dropping deleted, to protect those underneath ... )

I have also owned a set of Yamaha NS1000's. Not a superb speaker, but
an excellent speaker.


** Psuedo poetic drivel.


Getting past the "toaster" comments, the reason the Gales have an
excellent midrange is the Peerless driver they used is optimized in
the crossover- there's some serious audio engineering that transpired
in the design. The crossover points are outside the vocal
bandwidth.



** Where is the " vocal bandwidth " defined ??

The spectrum of human voices, speaking or singing, ranges all the way from
70Hz up to 20kHz.

If you disconnect the woofer and tweeter from any good 3 way system, what is
left sounds like a telephone.


I've never actually read where Quad specified their crossover point
between the bass and treble panels- likely because it was within the
vocal range and would damper the "perfect midrange" commentary.


** The ESL57 was 3 way, while the ESL63 and later designs have no actual
crossover points - the six concentric drive rings are fed with full
bandwidth. The upper and lower 'bass" units are filtered -6dB oct at a few
hundred Hz.

In the ESL57, the responses of the panels roll off at only 6 db per octave
and overlap in the crossover regions resulting in an audibly seamless
result. Transient response test signals ( ie 4 cycle tone bursts ) are
reproduced perfectly at *any frequency* in the range from 65Hz to 18kHz. I
have done such testing myself.



.... Phil