KLH Model Nine loudspeaker JGH October 1968

JGH summarized the KLH Nine in October 1968 (Vol.2 No.10):

KLH Nine: Low efficiency, highly reactive loading characteristic, and superb transient response make this speaker extremely critical of the driving amplifier and input signal cleanness; drivers well-blended; tweeter highly directional, best heard off-axis; sound very smooth, liquidly transparent, likened to a spotlessly clear window on the sound; "Row-M" perspective places sound rather behind panels; somewhat cold sound; two panels (one complete Nine system) essentially flat to around 40Hz with panels together, gradually rolled-off below 60Hz with panels separated for wider stereo separation; with usable bass to around 32Hz in a large room, plus somewhat warmer sound; imaging with two panels (apart) good but optimum listening area restricted; listening area fairly large with four panels, but imaging only fairly good.

This is probably the most nearly perfect loudspeaker we have tested until this time.—J. Gordon Holt

COMPANY INFO
KLH Research & Development
Cambridge, MA (1966)
ARTICLE CONTENTS
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