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* Public Address System

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

Acoustically simulate the column speakers of different shapes, e.g. inclined, concave, convex

and more complicates shapes.

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.

This unit has AUX signal input, AUX signal output and constant voltage power signal input (70V

or 100V).

Volume, tone and other parameters of the column speaker can be adjustable.

The LED screen on the lower part of the unit can display different parameters and messages.

Operate from infrared remote controller.

Compact size, easy installation and high electro-acoustic sensitivity.

3. Description of Remote Controller Keypad

Key

Function

Power ON/OFF

Sound ON or

OFF

Equalization

adjustment

Increase

AN+

directivity angle

Decrease

AN-

directivity angle

V+

Increase volume

Decrease

V-

volume

FOCUS+

Focus backward

FOCUS-

Focus forward

S Key

Select sensitivity

Operation

One touch of this key slightly

One touch slightly to enter into equalization

interface. See Page 4 for operating methods.

One touch to increase by 1°. Hold down for 3s

to increase continuously

One touch to decrease by 1°. Hold down for 3s

to decrease continuously

One touch to increase by 1 level. Hold down for

3s to increase continuously

One touch to decrease by 1 level. Hold down

for 3s to decrease continuously

Every touch to move 1m backward. Hold down

for 3s to move continuously

Every touch to move 1m forward. Hold down for

3s to move continuously

One touch to view sensitivity; hold down to

select value of sensitivity

It takes approx. 5s for startup.

14-section equalization;

amplitude ±12dB

Max. angle: +45°

Min. angle: -45°

Max. volume: 32 levels

Min. value: 0

Nearest: -30m

Farthest: +30m

0dB, -6dB and -10dB available

for selection

Operating Instructions

Remarks