KV2 Audio EX10, User Manual

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EX10 · Audio Signal
The EX10 Control Panel
The EX10 features an easy to use rear control
panel with audio input and output, level control,
LED status lights and a low pass filter that can be
engaged when the loudspeaker is used as a stage
monitoring device.
EX10 Rear panel
Audio Input and Output
The EX10 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 EX10 is turned off. The audio
input circuit presents a 20 kOhm balanced input
impedance to a three-pin XLR connector with the
following connectors:
Main input Through output
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 EX10 speakers with a paralleled input loop. If you are driving multiple EX10's in an ar ray, make certain that
the source device can drive the total load impedance presented by the paralleled input circuit of the array.
The audio source must be capable of producing a minimum of 20 dB volts (10 volts rms into 600 ohms) 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 array. The input impedance for a single loudspeaker is 20 kOhms. If "n" represents the number of EX10
loudspeakers in a system, paralleling the inputs of n loudspeakers will produce a balanced input load of 20 kOhms
divided by "n".
Most source equipment is safe for driving loads no smaller than 10 times the source's output impedance. For
example, cascading an array of 10 units consisting of EX10 speak - ers produces an input impedance of 2000
ohms (20kOhms divided by 10). The source equipment should have an output impedance of 200 Ohms or
less. This is also true when connecting EX10's in parallel (loop out) with other KV2 Audio amplifiers and active
speakers and subwoofers.
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.
Ensure that all cabling carrying signal to multiple amplifiers and active speaker systems is wired correctly. Make
sure that the polarity has not been reversed. Reversed polarity can cause severe degradation in frequency
response and can also impact the dispersion characteristics of the speaker.
EX10 · A
udio Signal
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