R41 951.99
(R48 244.79 incl VAT)
Short description:

Studio-quality digital audio system


MX 2400: an exclusive Solidyne product

The new version , the model "MX", of the Codec-Mixer 2400 is a Studio-quality digital audio system. Robust and reliable. It is manufactured for hard use during many years. It has aircraft quality aluminum cabinet, very light and resistant It has input / output USB to connect to Netbooks and Tablets. Also features a new internal CPU allowing use of the 3G/4G cellular modems to transmit wirelessly to the Internet.

All potentiometers are conductive ceramic of one million operations (100 times more than your current console ...) The use of very low-power integrated amplifiers of the kind used at the spacecrafts, allows you to have 16 hours of continuous use with NI-Metal rechargeable batteries. Even in case of feeding the internal CPU plus the external 3G modem may be obtained over 6 hours autonomy.

Internal CPU + 3G/4G + Codec + Portable Mixer for high quality outdoors radio transmission. Stereo Digital

  • 10 channels of stereo digital audio with MP3 streaming
  • It works standalone using wireless 3G/4G modem
  • Internal audio processor, Bluetooth wireless cellphone link
  • Direct output to laptop or tablet PC using USB connection
  • It has inputs for five MIC balanced, with 48V Phantom
  • 3 balanced lines and one stereo unbalanced line.
  • 6 stereo jacks outputs for 6 handsets with internal distributor amplifier.
  • It has Analog stereo outputs and mono balanced, as well as Digital Ethernet output for direct connection to Internet via streaming audio TCP/IP in mono or stereo.
  • Using a 3G/4G standard modem it can be connected to the cellular Internet network . It allows broadcasting from anywhere in the world without costly links
  • It does not require an expensive decoder at the radio studio, because any PC connected at Internet can be used.

MX2400 encodes using standard MP3 audio streaming reproduced by Windows Media Player, Winamp or any other free software. MX 2400 allows simultaneous analog and digital transmissions. It uses internal telephone hybrid for terrestrial line or cellular phones wirelessly connected by Bluetooth.

MX 2400 allows getting the audio quality of a stereo FM radio during outdoor transmissions. The audience deserves to feel they're inside the stadium and share excitement of the podium.

  • The CODEC-Mixer MX 2400 is small, lightweight and with a long life battery 
  • All potentiometers are conductive ceramic of one million operations NOT required to use a special decoder at Studies
  • An internal audio processor maintains constant level of transmission
  • Aluminum case, lightweight and corrosion-proof.
  • An excellent needle VUmeter can be perfectly seen at full sunlight; Even at night the illuminated scale provides excellent visibility

MX 2400 can handle an outdoor complex transmission

  • The Codec 2400-Mixer handles 5 mono microphones. Offers 48V phantom power
  • When working in stereo mode, MICs are routed to: 2 MIC left, 2 MIC Right and one MIC Central.
  • It manages 6 stereo headphones with internal distribution amplifier
  • 6 headphones outputs, with 3 jack connectors on each side can operate in mono or stereo
  • A keyboard dialer DTMF allows using MX2400 with a phone line, without the need for a telephone set.
  • Incoming calls to MX2400 are marked by a LED on the front panel 

Installation in seconds

  • The MX 2400 is installed very quickly because employs standard connectors
  • The console is simple to handle and operate by the journalists themselves
  • The mixer do not have tiny screens hard to use neither controls difficult to handle
  • The Bluetooth cellular connection simplifies the connection of cellphones
  • All the connectors are standard XLR and 6.35mm jacks.
  • The channels 3, 4 and 5 have dual connectors that let you enter a MIC using XLR or a Stereo jack for line use

MX2400 has switching power supply

  • You can connect it to any outlet between 90 and 240V without having to ask anyone: Is it 220 or 110?
  • Charge batteries in one night.
  • The mixer can work while charging batteries

Direct connection to Internet

  • Connect the MX2400 to any network that has Internet access.
  • Any journalist can perform this operation
  • At studio you can receive the audio console using existing PC for Internet use.
  • The MX2400 is heard as a MP3 audio streaming without the use special decoders
  • Latency (delay time): The MX2400 has only an imperceptible delay of 20 - 40 millisecond . Added to this is the delay due to Internet
  • The total value will typically be: 0.5 to 5 seconds. It is OK for sports transmission
  • But for interviews, it may be switched to mode: "Cellphone + VQR" that has zero delay, but accepting a slight deterioration in sound quality

Wireless operation 100% standalone

  • The MX2400 can use a 3G/4G modem that is supplied free of charge by the cellular phone companies.
  • It is also possible to use the WiFi network that is provided in snack bars, shopping centers and hotels

A-Stereo Mixer Section 


6 channel, 9 inputs;

5 Microphone balanced inputs; 3 are MIC / Line
XLR connectors for MICs and 1/4" jacks for balanced line
In stereo, MIC 1 & 3 are Left; MIC 2 & 4 Rigth; MIC 5 center
One Stereo line input 1/4" unbalanced jack, 50 Kohms 
Digital USB input from Netbook / Tablet

Phantom Power

48 V phantom in all microphones with internal switching supply

Input level

Balanced Microphone: -22 to -75 dBu, MIC 1,2,3 & 4
MIC 5 (stereo center) ; -22 to -65 dBu
Balanced Line: -20 to + 20 dBu
Stereo Line; -10 to + 20 dBu

Audio output

Mono balanced audio output + 4 dBm / 600 ohms / XLR out

Stereo, unbalanced -10 dBu to 0 dBu / 10 Kohms / 1/4" jack
Digital Stereo stream, coded MP3, see below CODEC / RJ45
Digital output: USB output to Notebook / Tablet

Hybrid Outputs

2 outputs with internal Hybrid.

One for land phone line (POT) and one for cellular phone 
Return to Studio output level: - 2 dBu over 2 Km artificial line

Bluetooth link out

Microwave digital link, Bluetooth, to connect a second cellular phone wireless up to 10 meters. This avoids problems associated to wired connections

Stereo Headset Mixer

6 stereo outputs for headsets; Z= 8 to 600 ohms

4 channel mixer and Distribution Amplifier included. It can work stereo or mono mode. Inputs are: Stereo Mixer Out, Studio return (Hybrid,Cellular or Tuner), Bluetooth and Digital stream

Frequency Response

MIC to mono out: 20 - 20.000 Hz +/- 0,5 dB

plus -3 dB @ 20 Hz anti pop filter
Stereo Line to Stereo Out: 20-20.000 Hz +/- 0,2 dB
Stereo Line to Digital at 64 Kbits/s: 30-15.000 Hz +/- 0,5 dB

THD Distortion

MIC to mono out: less than 0,1 % 

Stereo Line to Stereo Out: less than 0,04 % 
Stereo Line to Digital stream at 64 Kbits/s: less than 0,04 %


MIC to mono out: Signal/noise > 60 dBA at -40 dBu MIC input

Stereo Line to Stereo Out: Dynamic range > 85 dBA
Stereo Line to Digital stream Dynamic range > 75 dBA

Stereo Crosstalk

Better than 65 dB at 1 KHz

Audio Compressor

Audio compressor for level control at the mono output and cellular phone. High audio quality stereo output is uncompressed

20 dB action with 2 LED indication; 5 & 15 dB 
1 ms attack time and 200 ms recovery
Slope 20:1

Wireless links

1-USB output for 3G/4G modem
2-WiFi connection

Electronic Technology

Advanced rail to rail amplifiers with very low power consumption , for long battery duration. Modular Bluetooth, 48V phantom, One million operations potentiometers for full life duration.

Cellular connection

Cellular # 1wireless Bluetooth linked up to 15 meters

Cellular # 2 (backup unit) wired to RJ11 connector

Additional Features

Battery charge meter
Internal talkback MIC
Internal DTMF dialer
Audio generator at + 4 dBu reference level, 1.000 Hz +/- 10 %

Battery charger

The console includes a multivoltage 90 V to 240 V switching battery charger
During charge the console can work On Air
Full charge overnigth, 10 to 12 hours

Battery duration

Analog mixer use with Bluetooth: more than 20 hours
Stereo or mono Internet streaming with 3G/4G modem: 6 hours
Professional grade Nikel-Metal battery, 5,4 A at 4,8 V 
Battery life: 1.000 charges guaranteed

Dimensions & weight

Dimensions: 70 mm x 200 mm (wide) and 265 mm depth

  Weight: 1,8 Kg with battery

B-Codec streaming section

Streaming connection

Standard RJ45 Ethernet connection TCP/IP

Standards supported

MP3 Layer 1 (32, 44.1 and 48 kHz)

MP3 Layer 2 (16, 22.05 and 24 kHz) 
G.711 (µLaw / aLaw 8 and 24 kHz sampling rate)
16bit PCM uncompressed (8 and 24 kHz)

IP standard based protocols; TCP/IP, UDP, HTTP, ICMP, SNMP

Supports BootP, DHCP and Auto IP
It supports RTP for low latency

Studio link

Using a streaming host (Solidyne provides one temporal to test the MX 2400), the Journalist only needs to connect the codec to Internet to start the digital transmission

Latency (time delay)

MB2400 has a latency of only 50 mS
The full loop including Internet and receiver software in a direct conection is between 0,5 sec to 1,5 sec
Using an iceCast host streaming server this value usually 
raise to 1 - 5 sec

Voice IP identification

When MX2400 is connected to a LAN network for codec programming, a voice response in English can be heard at headphones in order to get the IP address of LAN

Delivery : 3 weeks

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