KV2 Audio EX2.5 - Manual (Page 7)

EX2.5 USER GUIDE P. 7
REAR CONTROL PANEL
The EX2.5 features an easy to use rear control panel
featuring audio input and output connections, level
control, LED status lights, phase reverse switch and
speaker level output.
Audio Input and Output
The EX2.5 uses balanced, female XLR connectors for
audio signal input, and a male XLR connector to
provide through output signal. The EX2.5 features
Left and Right stereo inputs and outputs allowing the
product to be integrated into stereo systems that
require one subwoofer.
The EX2.5 also features Left and Right High Pass
Outputs that can be used to provide audio signal to
full range speakers being used in conjunction with
the EX2.5. The high pass filter provides a crossover
point of 125Hz.
The through output connector, wired in parallel to the
audio input, will continue to provide the input signal if
the EX2.5 is turned off. The audio input circuit presents
a 20 kOhm balanced input impedance to a three-pin
XLR connector with the following wiring:
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 EX2.5 subwoofers with a paralleled
input loop. If you are driving multiple EX2.5’s in an
array, make certain that the source device can drive the
total load impedance presented by the paralleled input
circuit of the array.
Main Input
Signal applied to the left channel Main Input is
summed with any signal applied to the right channel
Main Input and then fed to the EX2.5 amplifier. When
using the EX2.5 with a mono signal, then either Main
Input can be used.
Mid-Hi Output
Signal applied to either Main Input also passes through
a stereo crossover. This gives each respective channel a
Mid-Hi Output (crossover frequency 125Hz) that can be
used to feed other enclosures such a EX6, 26, 10 and
12.
EX2.5 CONTROL PANEL
NOTE: 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
EX2.5 subwoofers produces an input imped-
ance of 2000 ohms (20kOhms divided by 10).
The source equipment should have output
impedance of 200 ohms or less. This is also
true when connecting EX1.8’s in parallel (loop
out) with other KV2 Audio amplifiers, active
speakers and subwoofers.
NOTE: 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.
EX2.5 Rear panel
SIGNAL PRESENT
R
SIGNAL PRESENT
L
LIMITER
POWER ON/ THERMAL
PHASE
MAIN INPUT
180 °
0 °
0
-6dB + 6dB
LEVEL
THROUGH SIGNAL OUTPUT
MID - HI OUTPUT
MAIN INPUT
THROUGH SIGNAL OUTPUT
MID - HI OUTPUT
1 2
3
1 2
3
1 2
3
1 2
3
2 1 2 1
3 3