Guangzhou DSPPA Audio Co., Ltd.

Acoustic Hailing System Auxiliary Speaker - WJ-20

Acoustic Hailing System Auxiliary Speaker - WJ-20

Brief introduction

The MJ – 20, produced by Guangzhou DSPPA Audio Co., LTD., is a large power horn speaker. With the hi-end speaker unit, it brings wider and further amplification effect, which is suitable for all kinds of outdoor applications, such as highways, stadium, beach, park, plaza and other places need high power public address system.


1. Hi-end speaker unit, high sensitivity and high sound press level;

2. All-weather design, IP65 waterproof and dust-proof

3. High speech intelligibility and excellent transmission effect. The speech intelligibility around 100 meters away is up to 0.7.


1. High way

Location: intersections and large tunnels

Usage: long distance voice command and emergency voice evacuation

Functions: Voice public address


Based on the network public address system, the transmission is with the local area network as the main transmission medium and the transmission distance can reach up to more than ten kilometers. The user can remote control the computer and manage the zones from long distance within the local area network, and send real-time voice command and emergency voice evacuation messages.

Product list:

System diagram:

2. Beach

Usage: Voice guide, emergency call

Function: voice public address


Equipped with a power amplifier, a preamplifier, an emergency microphone, and an outdoor speaker WJ-20 for voice broadcasting. The system is easy to be installed and the functions are simple to realize.

Product list:

System connection diagram:

Product introduction

Acoustic Hailing System Auxiliary Speaker  WJ-20
  • Rated power: 200W
  • Max SPL: 116dB
  • All-weather outdoor design speaker

  • Tel:+86 020 37166520
  • Fax:+86 20 81305947
  • Address:Jianggao Town, Baiyun District, Guangzhou, China