Main Unit for Conference System

1. Designed accordance to CE, CB and CCC standards.
2. Built-in power supply device and signal amplify, which can support more than 60
groups of the speech equipment. The system can be extended to 150 units at most.
3. One main control unit can control up to 50 microphones.
4. Modes: Free discussion mode, Speech alternation mode, and speech restriction mode.
a. Discuss free mode: delegate units can work freely by press theirs buttons on and
press off when finish speech.
b. Speech alternation mode: 1-19 delegate units can set freely to work by turn.
c. Speech restriction mode: 1-19 delegate units can set to work per the set restriction.
5. Chairman unit selectable mode, it can be set to have the priority to mute the
delegate and set to have no priority.
6. Feedback restraint circuit: Bass and treble digital regulative circuit, tone quality
of system can regulate independently, volume regulation for microphone.
7. Balanced output, 2 speaker outputs and unbalanced output.
8. Power consumption: 115W
9. 19 inch standard rack



1. The number of chairman unit is unrestricted, so it can be added in any position
of the system.
2. Equipped with an earphone output jack and wireless MIC input jack.
3. Press the priority button to mute delegate MIC (chairman unit only).
4. Indicative sound for chairman unit (optional)
5. Red indicator can show the status of the microphone.
6. When the microphone is on, the built-in loudspeaker and the side-to-side linking
microphone's loudspeaker are in quiet status to avoid whistle.

SPECIFICATION
18V input supplied from main unit.
Condenser microphone, windbreak-cover
Adjustable gooseneck
Ring LED indicator
On/off button
Press-to-talk priority speech button (chairman unit only)
Chime to mute the delegate unit (chariman unit only)
Sound-control on/off function: auto-off after speech 30 seconds
Reference distance: 20-120cm
Frequency response: 100-13000Hz
Sensitivity: -44dB