Special Features
The CVA-7400 and CVA-7800 is the result of many years of experience in
the research, development, and manufacturing of amplifiers and other sound
equipment. It is a combination of old and new, cutting-edge electronics and
timeless purity of sound. As such, it represents Stewart Audio’s commitment
to developing the latest available technology to achieve the absolute audio
quality and reliability.
Please take a few minutes to read through this section of the manual, which
provides an overview of the features that make these amplifiers unique.
Low Impedance/High Current Design
The design of the CVA-7400/CVA-7800 is exceedingly conservative with
regard to current capabilities. This ensures that the amplifier’s output devices
remain within their Safe Operating Area, even under extreme conditions. As a
result, the CVA-7400/CVA-7800 runs low impedance loads safely while
retaining the high impact dynamics for which they were designed.
Auto Impedance Optimization
The High-Frequency Switch Mode Power Supply and amplifier design used in
the CVA-7400/CVA-7800 adapts to the demands placed upon the amplifier,
enabling them to run with maximum efficiency regardless of the load
impedance. Thermal management problems normally associated with
amplifiers of this capacity are therefore greatly reduced. Resources otherwise
applied toward dealing with thermal problems can be put to better use in
higher quality active components for increased reliability and improved
performance.
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Input Wiring
The CVA-7400/CVA-7800’s input sections allow the use of the XLR or
Barrier Strip connectors, and will accept either balanced or unbalanced input
signals.
Pinouts are standard (see diagrams below; Pin 2 of the XLR connector are
“Hot” of Positive.
Input connections should always be made with the amplifier’s power turned
off.
Balanced XLR Connections are made
with the following pin assignments:
#1 = Ground
#2 = Positive (+)
#3 = Negative (-)
Balanced XLR Connections are made
with the following pin assignments:
#1 = Ground
#2 = Positive (+)
#3 = Ground
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