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Wiring the unit
The use of twin-and-screen cable is recommended for both
inputs and outputs.
Inputs
Preferred wiring for both balanced and unbalanced sources is
illustrated below:
Balanced
Unbalanced
A 'ground lift' facility is available on the dBZ-48's inputs, which
may be useful in resolving earth hum issues. Normally the input
XLR's pin 1 is connected to ground, but this connection may be
broken by moving an internal pcb jumper.
Overview
The Apex dBZ-48 can be used in any situation where one or two
stereo audio signals need to be routed and mixed at different
levels to up to four destinations.
Each of the two inputs is provided with electronic balancing,
RFI filtering, mono/stereo switching, level control, a muting
circuit and LED metering. The A & B inputs are each split to the
four output channels, and summed separately in each.
The level of each input signal fed to each output channel may be
individually set. Again, mono/stereo switching, muting and LED
metering are available for each output. The servo-balanced
12
groundlift jumpers on pcb
Outputs
Preferred wiring for both balanced and unbalanced destinations
is illustrated below:
Balanced
Unbalanced
output stage design results in a very low output impedance,
making it possible to drive long balanced lines (e.g., from a
FOH mix position to stage amp racks).
Overview
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