MC781 multi-functional conference mixer
MC781 is an 8+8 channel smart conference mixer controlled by micro-processor and automatically switched.
Its birth offers brand-new application solutions from small-scaled to international conferences and from portable
to mobile conferencing applications.
MC781 smart conference mixer is conveniently used for multimedia teaching and conference sound amplification
with actual requirements of project application taken into account in design. It is completed with 8 Cannon
balanced microphone and 8 Phoenix wire balanced microphone or line input channels, including 48V phantom
power supply for condenser microphones and one unbalanced auxiliary line input to connect the external auxiliary
audio equipment. Gain of each input channel is tuned separately with built-in limiter and any microphone channel is
set as chairman priority channel based on applications. When the chairman channel speaks, output levels of other
microphone channels will be attenuated automatically. For each input channel is built with one threshold level control
circuit inside, proper threshold control value is adjusted based on needed. The channel with signal input is enabled only,
namely, during the entire conference, the conference participants operate speech microphone on/off and chairman
priority control without manual adjustment.
Built-in NOMA function is available for MC781 smart conference mixer, total output level is adjusted in accordance with
channel number of input signals, namely, when multiple microphones are speaking simultaneously, total system output
level remains constant, the system output level of the system will not be increased due to superposition of input level
and the probability of “sound feedback” will be lowered effectively. It is rare in the conventional sound amplification.
With such a function, under normal sound amplification functions after system commissioning, unnecessary whistling
trouble is prevented with change of number of microphones, more outstanding and practical in the environment of
smaller spaces and more microphones.
MC781 is configured with 15 sets of cascading functions, the number of microphones used can be temporarily
increased based on operation needs, the scale of conference is increased to up to 120 persons quickly and
conveniently and the conference mobility is enhanced significantly.
MC781 smart mixer is used in medium and small-sized conference rooms, lecture halls, VIP reception halls and
conference centers to manage so many microphones and simplify system operation. The smart envoy ensuring easy,
efficient and worry-free operation of the conference brings us with human-centered experience with science and technology.
8 Cannon balanced inputs, using signals from microphone or line level (with adjustable EQ)
8 phoenix connector balanced input, using signals from microphone or line level (with adjustable EQ)
2 channels of 6.35 input (with adjustable EQ)
2 channels of dual-track music input (with adjustable EQ)
Each channel of input completed with 48V phantom power supply
Each channel of input completed with standalone gain and volume control
Each channel of input completed with adjustable gateway attenuation level
Each microphone channel completed with compression limiting function
Each microphone channel is independently switched to priority presetting mode.
The sound track with signal input only is automatically enabled, the sound gateway action level is adjusted automatically and operation is easy.
The unique feedback inhibition function is used to adjust input gain and total output gain, in particular to automatic level adjustment based on
occupation of sound tracks and effective prevention of whistling
Connected to 15 sets of K781 and management of conferencing system with up to 120 microphones
Microphones of various grades and characteristics are configured based on actual situations, easy connection and flexible operation
Specifications and parameters:
Input impedance: MIC 4300Ω, AUX 50KΩ
Output impedance (balanced): MIC 15KΩ, LINE220Ω
Output impedance (unbalanced): 1KΩ
Pre-out impedance: 3.3KΩ
Maximum input level: MIC -18dBV, AUX6dBV
Maximum output level (balanced): MIC -18dBV, LINE 21.5dBV
Standard input level: MIC -28dBV unbalanced AUX 2.5dBV
Standard output level (balanced): MIC-25dBV LINE 0dBV
Pre-out level: -4.4dBV
Maximum gain: 62dB
Inherent noise: -85dB
Phantom power supply: +48V
Control output voltage: +5V
Power voltage: AC 220V
Consumption power: 25W
Dimensions (W3D3H): 482×179×90mm
MC781 multi-functional conference mixer dimension figure