Page 4
1.0 OVERVIEW
PRODUCT OVERVIEW
Main Features:
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12 Channel 1 into 4 (12 into 48) Active Mic Splitter
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Unique Input & Output configuration options
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Unity Gain signal path for ease of set-up
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Drives long cable runs without level loss
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Compact design e.g. a 48 channel System in 13U (including Power Supply)
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Channel Monitoring facility
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Individual Input and Output group earth lift switches
The MS1224 is a 12 channel, 1 into 4 Unity Gain Active Microphone Splitter designed for
applications where multiple feeds are required from one set of microphones without the
signal degradation experienced with passive splitting solutions. The Unity Gain design
principle combined with excellent line driving ability ensures that unity levels are delivered
at the end of each feed, even over considerable distance, thereby saving time in
recalibrating levels.
Each of the MS1224's channels has four independently buffered, transformer balanced
outputs and a fifth dedicated parallel Link output. The Link output may be used to provide
a direct, non active feed, for instance to the FOH console, or it can be used to daisy chain
adjacent channels to provide more output feeds from a single microphone, for instance
for Press Box applications. The inputs are electronically balanced with a Pad switch for
connection of line level signals. Switchable Phantom Power is provided with a Phantom
Presence LED.
The MS1224 incorporates a channel monitoring circuit, which is accessed on the PSU
unit. Each channel has a Listen button that connects it momentarily both to an LED
bargraph and headphone socket on the PSU front panel. The headphone monitor circuit
incorporates a dynamics enhancement and protection system. This controls the dynamics
of the signal in a way that amplifies very low background levels whilst limiting high signal
levels. This enables monitoring of microphone function during set up without the need of
a vocalist being present on the mic. It also provides user protection against sudden loud
signals.
A unique design feature of the MS1224 is the option to configure the way that Input and
Output connectors are presented on the front and rear of the unit. As each customer has
their own views on this we have given the flexibility of presenting the Input and two
Outputs on the front and three Outputs on the rear, or vice-versa. In addition the Output
designated as Link can be positioned either below the Input connector, or above the
group of three Outputs. Thereby giving four possible permutations. The required
configuration can be specified ex-works or simply reconfigured at a later stage.
Each XLR connector on each channel is equipped with 3 pin molex connectors for wiring
to a multicore set. A standard rear panel multicore plate is available for use with 56 way
EDAC connectors. Thereby all connectors per channel can be accessed via a multicore
cable.
