audio technica / AT-MX781a

audio-technica/AT-MX781a is an automatic mixer that controls channel gates using the audio input from a connected microphone.

■Automatic Mixer
An automatic mixer that uses the audio input from the connected microphone to control the channel gate.
An intelligent conference mixer that condenses 8-channel microphone input and a variety of digital processing functions.
Cascade connection is possible via digital link, and up to 16 units (128 channels) can be added. You can build a system that suits the size and style of the facility.
In addition to a wide range of functions such as automatic threshold and gate settings, LASTON function, and NOMA circuit that prevents a decrease in howling margin, it is fully equipped with functions essential for a conference system such as external control function via RS232C and Ethernet.
The fully digitalized control function makes it easy to perform setting operations and data storage. Detailed settings can be made on a computer even offline.
Fully compatible with touch panel interfaces such as AMX and Crestron.
Uses Ethernet that can extend the control terminal distance from RS232C.
Improved internal circuitry significantly improves noise levels (below -128dB).
Input and output GAIN settings that take into account connected devices (→4-step adjustment).
Newly equipped with noise detection function and head cut prevention function.
Equipped with general mute function and -∞ mute function by command protocol.

■Specifications
Total gain (1kHz, 600Ω load)
MIC: 62dB or more, LINE: 14dB or more

Maximum input level (1kHz, T.H.D. 1%)
MIC: -41dBu or more
Reference input level: -58dBu (output = +4dBm)

Input impedance
MIC: approx. 7.5kΩ, LINE: approx. 12kΩ

Reference output level
Balance: +4dBm (reference value)
Tape: -6dBu (when balanced output is the reference)

Noise level
-128dBv or less

Balanced output T.H.D.
0.1% or less

Frequency response
Flat: 20Hz -18kHz (-3dB)
Low cut: 160Hz (-12dB/oct)

Phantom power supply
+48V DC

Power supply
100V AC 30W

Dimensions (excluding protrusions)
H44×W430×D225mm

Weight
3.5kg

Accessories
AC cord, link cable, rack mount bracket, CD-ROM for software installation

Sold separately
Rack mount bracket