-17-
FIG 9
Model 70 Bass
Radiator low pass
section
FIG 10
Underside of
Model 70 power
supply showing
E.L.S. matching
transformer and
various component
parts.
Before discussing all design and electrical characteristics
of these units it may be of interest to note from Figs. 7 - 1 0
how stray capacities have been reduced to a minimum by careful
design and positioning of units. This factor plays an
important part in sensitivity and "top octave" performance of
electrostatic units.
A poor crossover unit or incorrectly chosen crossover
frequencies can mar an otherwise good loudspeaker system. The
writer has always felt that somewhere in the 400 Hz to the 600 Hz
