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Public Address System
Operating Instructions
2
1. Product Description
The phased-array column speaker is a new type of public address device. By applying the electronic and
digital signal processing (DSP) technologies, it can simulate the directivity of different shapes of column
speakers, while the inherent performances of the phased-array column speaker will not be affected, e.g.
rated power, range of frequency response and max. sound pressure level.
With DSP technologies, we may operate from the remote controller to change the directivity of speaker
system at some extent. This is suitable for public address in a hall where the building acoustics is poor
(especially long reverberation time). This product is most suitable for the hardware (speaker, DSP
processor) of the public address system in sports venues (where the volume of space is large, the
building acoustics is poor, the reverberation time is long and the sound is muddy), that it can be
combined with special software to make the controllable sound cover useful area (auditoria, etc)
correctly and prevent it from diffusion to useless area (e.g. ceiling, door or window). In this case, it can
reduce the investment in material of acoustic decorations in venues and decrease the energy loss
caused by public address system. This leads to reduced investment in both the acoustic decorations and
public address system in the sports venue.
2. Functions
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Acoustically simulate the column speakers of different shapes, e.g. inclined, concave, convex
and more complicates shapes.
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Active column speaker with built-in digital signal processor and digital power amplifier, so that it
is no need for driving of external power amplifier.
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This unit has AUX signal input, AUX signal output and constant voltage power signal input (70V
or 100V).
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Volume, tone and other parameters of the column speaker can be adjustable.
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The LED screen on the lower part of the unit can display different parameters and messages.
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Operate from infrared remote controller.
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Compact size, easy installation and high electro-acoustic sensitivity.
3. Description of Remote Controller Keypad
Key
Function
Operation
Remarks
Power ON/OFF
One touch of this key slightly
It takes approx. 5s for startup.
Sound ON or
OFF
One touch of this key slightly
EQ
Equalization
adjustment
One touch slightly to enter into equalization
interface. See Page 4 for operating methods.
14-section equalization;
amplitude
±
12dB
AN+
Increase
directivity angle
One touch to increase by 1
°
. Hold down for 3s
to increase continuously
Max. angle: +45
°
AN-
Decrease
directivity angle
One touch to decrease by 1
°
. Hold down for 3s
to decrease continuously
Min. angle: -45
°
V+
Increase volume
One touch to increase by 1 level. Hold down for
3s to increase continuously
Max. volume: 32 levels
V-
Decrease
volume
One touch to decrease by 1 level. Hold down
for 3s to decrease continuously
Min. value: 0
FOCUS+
Focus backward
Every touch to move 1m backward. Hold down
for 3s to move continuously
Nearest: -30m
FOCUS-
Focus forward
Every touch to move 1m forward. Hold down for
3s to move continuously
Farthest: +30m
S Key
Select sensitivity
One touch to view sensitivity; hold down to
select value of sensitivity
0dB, -6dB and -10dB available
for selection