Specifications
Page 10
Build quality
The quality of construction is typical of the finest
components made today.
All exterior and interior aluminum parts are
anodized. Steel parts are powder-coated.
Resistors are high reliability, precision metal
film, 1% tolerance.
Capacitors are of the highest quality, and none
are used in the signal path.
Connectors are either rhodium or gold plated.
Both balanced and unbalanced connectors are
standard.
Wire has been eliminated wherever possible by
using modular construction.
DESCRIPTION
The Electrostatic Amplifier is designed with the
same level of thoroughness usually reserved for
the finest amplifiers. Differential voltage gain
throughout provides exceptional rejection of
external noise and contributes to the inherent DC
stability of the circuit. This allows direct
coupling at the balanced inputs without servo
circuitry and virtually eliminates any DC offset
that could overload the step-up transformers
found in all electrostatic speakers.
The front end is designed to provide a slew rate
of 50 V/µS without entering Class B operation, as
is common in many other designs. This,
combined with excellent high frequency design,
insures linear operation at high speed. The
power supplies take a very direct approach to
high performance. A top-quality 1700VA
toroidal transformer with independent rectifiers
and capacitors are used with large amounts of
storage capacitance.
The current stage is capable of producing peak
currents in excess of 135 Amperes with a degree
of linearity and speed that is not matched by
other designs when producing only a fraction of
this current. This is achieved by the
implementation of several distinct circuit
features.
Each channel uses eighteen individual output
transistors with a combined power rating of
4500 watts and a bandwidth of 10 Mhz.
The bias section is designed to produce a
precision transition with no abrupt changes in
distortion or output impedance. This “Precision
Bias” technique allows for extremely high
efficiency operation and yields seamless
performance regardless of the complexity of the
load impedance.
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