Special Features
The World 600 and World 1.2’ are 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 World 600/World 1.2 are 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 World 600/World 1.2 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 World 600/World 1.2 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.
Mono-Bridgeable
The two channels of the World 600/World 1.2 can be bridged together to form
a single channel. In this configuration the load impedance is effectively
divided between the two channels so that each channel sees half the
impedance of the load. This results in at least three times the power output of
either single channel at the same impedance.
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Bridged Operation
Operating your amplifier in Bridged (or MONO mode allows the two
channels to be used together to drive a single (monaural) load at a much greater
power level than is achievable using a single channel.
Special wiring requirements must be observed when operating in bridge mode.
Failure to install input and output wiring as specified here risks damage to the
amplifier and other system components, and could void the amplifier’s
warranty.
Before converting to bridged mode, be sure to turn off the amplifier’s power
switch, or disconnect the AC power.
Never convert from one operating
mode to the other while amplifier is on.
Set the Mono/Stereo switch to MONO position. The switch is located on the
rear panel near Channel 2’s input section.
Make the appropriate input connection to channel 1 input only (when the
Mono/Stereo Switch us in the Mono position, the Channel 2 Input is
disengaged).
Connect the positive terminal of the loudspeaker (4 ohm minimum) to the
positive (red) terminal of Channel 1
. Make no connections to the “Ground”
terminals.
To simplify hookup, a dual banana plug may be used across the positive output
terminals to make speaker connections in bridged mode.
Important: follow these speaker hookup instructions carefully. Failure to
do so could damage your amplifier.
Channel #1 Positive (+) Terminal = Speaker Positive (+)
Channel #2 Positive (+) Terminal = Speaker Negative (-)
Channel #1 Negative (-) Terminal = no connection
Channel #2 Negative (-) Terminal = no connection
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