KV2 Audio EX1.8 - Manual (Page 7)

EX1.8 USER’S GUIDE P. 7
REAR CONTROL PANEL
The EX1.8 features an easy to use rear control panel
featuring audio input and output connections, level
control, LED status lights and a low pass filter that can
be engaged when the loudspeaker is used as a stage
monitoring device.
Audio Input and Output
The EX1.8 uses balanced, female XLR connectors for
audio signal input, and a male XLR connector to
provide through output signal. The EX1.8 features
Left and Right stereo inputs and outputs allowing the
product to be integrated into stereo systems that
require one subwoofer.
The EX1.8 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 EX1.8. 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 EX1.8 is turned off. The audio input circuit
presents a 20 kOhm balanced input impedance to a
three-pin XLR connector with the following connec-
tors:
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 EX1.8 subwoofers with a paralleled
input loop. If you are driving multiple EX1.8’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.
EX1.8 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
EX1.8 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.
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.
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.
EX1.8 Rear panel
Through output Main input
MAIN INPUT
THROUGH OUTPUT LEVEL
0
+ 6dB - 6dB
PHASE
NORMAL 0 °
REVERSE 180 °
HIGH PASS OUTPUT
LIMITER POWER ON/
THERMAL
SIGNAL PRESENT L
MAIN INPUT
THROUGH OUTPUT
HIGH PASS OUTPUT
SIGNAL PRESENT R
ON
DESIGNED BY KV2 AUDIO, MANUFACTURED IN THE CZECH REPUBLIC WWW.KV2AUDIO.COM
OFF
WARNING: THIS SURFACE MAY REACH HIGH TEMPERATURE DURING STANDARD USE.
TO ENSURE PROPER OPERATION ALLOW A MINIMUM OF 6 INS. OF CLEARANCE FROM
THIS SURFACE AND ADEQUATE VENTILATION. TO REDUCE THE RISK OF ELECTRIC SHOCK
DO NOT REMOVE THIS PANEL OR ANY ATTACHED COMPONENT. NO OPERATOR SERVICEÐ
ABLE PARTS INSIDE. REFER SERVICING TO QUALIFIED PERSONNEL. TO REDUCE THE RISK
OF FIRE OR ELECTRIC SHOCK, DO NOT EXPOSE THIS APPLIANCE TO RAIN OR MOISTURE.
SERIAL NUMBER
230 VAC 50/60 Hz
1200 WATTS
CAUTION
AVIS:
RISQUE DE CHOC ELECTRIQUE
NE PAS OUVRIR
WARNING:
RISK OF ELECTRIC SHOCK
DO NOT OPEN