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Telikou MX-2304 base station 4-wire six channel Matrix Control Unit

SG$ 2,300.00

MX-2304 is a special designed six channel 4-wire matrix control unit for small project. With single unit at each point, it can constitute a maximum 7 points full-duplex distributed intercom system. If with extra MX-2304 expanded at each point, the system can be expanded to 13 points. The fault of any MX-2304 will not effect the whole system. 

Without the central unit, the MX-2304 system has high cost performance. The disadvantage is the system need more cable connection.  


MX-2304 main station is suitable for television station, communication center, UB truck, live performance and any other environment which requires communication. We recommend you read through this manual to better understand the functions of MX-2304.


This system adopts wired connection, and has following features, stable and reliable performance, flexible configuration, full-duplex communication, clear and loud communication sound, easy operation, and strong noise resistance.


Front Panel

1.  Headset connector

4-pin XLR Male or 5-pin XLR Female

EARPHONE: Dynamic 50-2000 ohm

MICROPHONE: Dynamic 200 ohm 

The wiring of headset is as follow:

Pin 1 -- Common

Pin 2 -- Mic. hot

Pin 3 -- Earphone -

Pin 4 -- Earphone + 

Pin 5 -- Null

2. Panel Mic Connector

6.35mm unbalanced microphone jack. The microphone type can be dynamic or electric.

The definition of 6.35mm plug is as follow:

T-- Mic Hot

R-- Common

S-- Shield


3. USB Port (USB A / USB B)

Two USB ports are used to communicate with computer. USB A correspond to Channel 1, 2 and 3. USB B correspond to Channel 4, 5 and 6.

  • l LCD Screen Display Area:

Preview Area: Display all the label information.

Input Area:1) Type in Label information through keyboard

  • 2) Read label information from MX-2304 through USB port  
  • l Setting:

Line 1: Select channel group. 

       This function binds selected channel together. Press any channel button will turn

 on the bounded channel together.  

Line 2: Button Mode

  • 1) Single Click to latch the channel button.
  • 2) Double Click to latch the channel button.

Single click the button will release the latched channel. 

Hold the channel button is PTT (Push To Talk) mode. 

  • l COM Select:

Connect MX-2304 and computer through USB cable. Select proper COM port, then click “Connect” . When green LED lights means computer can communicate with MX-2304. 


  • l Write USB A / USB B: 

Write data which displayed on interface into MX-2304,


  • 4. Microphone Select Switch

Microphone select switch is used to select panel microphone or headset microphone.


5Aux In Level Control

Adjust external audio level which input through AUX In connector. 


6. Talk Listen Button

Bi-direction button. Lift button turns on the LISTEN function. Press the button turn on the LISTEN and TALK function. When TALK function is turned on. A CALL is sent to the channel connector at same time. 

Button working mode:

      PTT  -- Hold the button

      Latch -- Quick click the button. Press the button again will release the function. 


7. ALL

Bi-direction button. Lift button turns on the LISTEN function for all the 6 channels. Press the button turn on the LISTEN and TALK function for all the 6 channels. 


8. Power (Power/Power LED)

This red LED will light when power supply switch is on.


  • 9. Speaker

Internal 8ohm 3w speaker.

  • 10. LCD Screen

After turn on the power, LCD screen only display channel label. Press channel button will change the channel status and display.


11ANN. Button

Send the activated microphone signal to ANN. Out connector which is at rear panel. 


12. Volume 

Adjust the audio level which heard from panel speaker and headset.


13. AUX OUT Level

Adjust the audio level which heard from Intercom channel.


14. Panel Mic Gain

It is used to adjust the panel microphone gain. It has preset with Electret microphone


15. Power Connector

AC 90~260V, 50-60Hz


16. Extension Connector (DB9)

If station number is more than 7 in a system. An extension MX-2304 can be connected through this DB9 connector to make a 12 ports point.

The definition of connector is as follow

Pin 1 --- Audio Output

Pin 2 --- Ground

Pin 3 --- Audio Input

Pin 4 --- Ground

Pin 5 --- All Signal 

Pin 6 --- Relay No

Pin 7 --- Relay NC

Pin 8 --- Relay Com

Pin 9 --- 12V/1A DC

The extension MX-2304 station can be powered by this DB9 connector. 

  • 17. Intercom Line connector

RJ-45 connector. The pin out of connectors is as follows:

Pin 1 --- GND 

Pin 2 --- Null / +12VDC   

Pin 3 --- Audio Input + 

Pin 4 --- Audio Output + 

Pin 5 --- Audio Output -

Pin 6 --- Audio Input - 

Pin 7 --- Control Signal

Pin 8 --- GND


  • 18. Input Audio Gain Adjustment

The standard audio level is 1Vp-p. If input audio level is not proper, this knob is used to adjust the audio gain. 


  • 19. Intercom Channel Output Level Adjustment

The standard audio level is 1Vp-p. This will adjust output level for all six channels.


20AUX Input

The external audio signal is sent into intercom line through this connector.  

Signal Amplitude : 1Vp-p

XLR-3F Pin out is as follow:

Pin 1 ---  Ground

Pin 2 ---  Audio Input +

Pin 3 ---  Audio Input -

21Announce Out 

It sent microphone signal out through this connector. 

Signal Amplitude : 1Vp-p

XLR-3M Pin out is as follows:

Pin 1 --- Common (Shield)

Pin 2 --- Audio Output +

Pin 3 --- Audio Output -

IV Technical Specification

Bandwidth: 300Hz-4000Hz ±3dB

Earphone impedance: Dynamic 50-2000ohm

Microphone impedance: Dynamic 100-600ohm

Input Audio Level: 1Vp-p

Output Audio Level: 1Vp-p

Connector Input Impedance: >10Kohm


90~240VAC, 50~60Hz;


0° - 70°C(32°-158°F)


19” (W) x1.75” (H) x9.48” (D), 482mm x 44.5mm x 241mm