DSPPA DSP1502 Gebruiksaanwijzing - Pagina 3

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* Public Address System

1. Product Description

The phased-array sound column is a new type of public address system. By applying the electronic and

digital signal processing (DSP) technologies, it can simulate the directivity from different shapes of

sound columns, while the inherent performances of the sound column will not be affected, e.g. rated

power, range of effective 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 loud speaking in a hall where the building acoustics is poor

(especially long reverberation time). This product is most suitable for the hardware (sound box, DSP

processor) of the loudspeaker system in sports venues (where the volume is large, the building

acoustics is poor, the reverberation time is long and the sound is muddy), so 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

acoustic decorations in venues and decrease the energy loss caused by loudspeaker system. This leads

to reduced investment in both the acoustic decorations and sound system in the sports venue.

2. Functions



Acoustically simulate the sound columns of different shapes, e.g. inclined, concave, convex and

more complicates shapes.



Active sound column with inbuilt digital signal processor and digital power amplifier, so that it is

no need for external power amplifier.



Compatible with line signal input (300mV), line signal output (200mV) and broadcasting power

signal input with fixed voltage (70V or 100V).



Volume, tone and other parameters of the sound column adjustable.



The LED array screen on the right lower of the sound column can display different parameters

and messages.



Operate from infrared remote controller.



Compact size, easy installation and high electroacoustic sensitivity.

3. Description of Remote Controller Keypad

Key

Function

Power ON/OFF

Sound ON or

OFF

Equilibrium

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 equilibrium

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 sensitivity value

It takes approx. 5s for startup.

14-section equilibrium;

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