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Chapter 2
Audio Signal
The EX6 Control Panel
The EX6 features an easy to use control panel
featuring AC power in, audio input and
output, level control, LED status light and a
High Pass filter.
Audio Input and Output
The EX6 uses a balanced, female XLR
connector for the audio input connector, and
a male XLR connector to provide through
output signal. The through output connector,
wired in parallel to the audio input, will
continue to provide the input signal if the
EX6 is turned off. The audio input circuit
presents a 20 k
Ω
balanced input impedance to
a three-pin XLR connector with the following
connections:
Pin 1 - Ground
Pin 2 - Signal (+)
Pin 3 - Signal (-)
Case - Earth (AC) ground and chassis
Audio signal can be daisy-chained using the
through output connector on the input
panel. A single source can drive multiple
EX6 speakers with a paralleled input loop.
If you are driving multiple EX6’s make certain
that the source device can drive the total
load impedance presented by the paralleled
input circuits.
The audio source must be capable of produc-
ing a minimum of 0 dB (0.775V volts rms) to
produce the maximum peak SPL over the
operating bandwidth of the loudspeaker.
To avoid distortion from the source, make sure
the source equipment provides an adequate
drive circuit design for the total paralleled load
impedance presented by the speakers. The
input impedance for a single loudspeaker is
20 k
Ω
. If “n” represents the number of EX6
loudspeakers in a system, paralleling the inputs
of n loudspeakers will produce a balanced input
load of 20 k
Ω
divided by “n”.
TIP:
If the loudspeaker produces
noises such as hiss and popping,
disconnect the audio cable from the
loudspeaker, if the noise stops, then most
likely the problem is not with the loudspeaker.
Check the audio cable, source, and AC power
for the source of the problem.
TIP
Through output
Main input
