AT-MX381
Specifications
In the interest of standards development, A.T.U.S. offers full
details on its test methods to other industry
professionals on request.
*Input terminated with 150 ohms, A-weighted,
using Audio Precision System Two
Specifications are subject to change without notice.
Audio-Technica U.S., Inc., 1221 Commerce Drive, Stow, Ohio 44224
Audio-Technica Limited, Old Lane, Leeds LS11 8AG England
©2010 Audio-Technica U.S., Inc. audio-technica.com
0001-0225-00
Input impedance
Output impedance
Maximum input level
Maximum output level
Maximum monitor output
Maximum gain
Frequency response
Equivalent input noise
Microphone phantom power
Control voltage out
Power supply
Operating temperature
Dimensions
Weight
connector may be connected to an external control system (Crestron
®
or
AMX
®
) using standard open disclosure communication protocol to control
the mixer. Configuration software shall be provided with each automatic
mixer. It shall be possible to configure an entire linked system from one
mixer (master). The software shall be graphical in nature operating on the
standard Windows
™
operating system.
Two audio outputs (one balanced, one unbalanced) shall be provided to
drive amplification systems or other equipment. A master output control
shall be provided to set the overall level of the SmartMixer
®
. An adjust-
able limiter shall be provided on the main output to prevent overdriving.
A front panel headphone jack with level control and an LED output level
indicator shall be provided to monitor the audio output of the mixer.
It shall be possible to select the output indicator function pre or post
master level control.
Up to 16 automatic mixers (a total of 128 channels) may be daisy-chained
for large multi-mic installations. When operating in this way, the output
for all of the linked mixers shall appear at the master mixer in the chain.
Last mic on, NOMA and other configuration settings shall cascade
through the entire chain of linked mixers. Each mixer shall include the
cable for linking units together.
The mixer shall be designed to mount in a standard 19" equipment rack
occupying no more than one rack space. Rack ears shall be integral to the
unit. All system settings shall be possible via front panel controls or soft-
ware programming without having to remove the mixer from the rack.
A security cover shall be available to prevent unauthorized tampering
with front panel controls and it shall be possible to lock out programming
functions via the software or front panel switch sequence. The mixer shall
be designed with a universal internal power supply enabling it to operate
internationally on any global power system. It shall be provided with
proper IEC-type mains power cable specific to its location and an RS232
computer interface cable for programming (North America only).
The Audio-Technica AT-MX381 is specified.
Windows
™
is a registered trademark of Microsoft Corporation in the United States
and other countries.
AMX
®
is a registered trademark of AMX Corporation.
Crestron
®
a is registered trademark of Crestron International
8 CHANNEL AUTOMATIC MIXER AT
-MX 381
POWER
MIN
MAX
LEVEL
MONITOR
GAIN
LEVEL
MIN
MAX
GATE
THRESHOLD
LEVEL
MIN
MAX
AUTO
AT T.
P4 8 /
AT T.
AT T.
+10
LEVEL
AT T.
P4 8
PRIORI T Y
+6
+3
0
-3
-6
-10
-20
CH
8
CH
7
CH
6
CH
5
CH
4
CH
3
CH
2
CH
1
OUT PUT
CHANNEL STA T US
Input
1
Input
2
Input
3
Input
4
Input
5
Input
6
Input
7
Input
8
Master
GAIN
LEVEL
MIN
MAX
GATE
P4 8 /
AT T.
GAIN
LEVEL
MIN
MAX
GATE
P4 8 /
AT T.
GAIN
LEVEL
MIN
MAX
GATE
P4 8 /
AT T.
GAIN
LEVEL
MIN
MAX
GATE
P4 8 /
AT T.
GAIN
LEVEL
MIN
MAX
GATE
P4 8 /
AT T.
GAIN
LEVEL
MIN
MAX
GATE
P4 8 /
AT T.
GAIN
LEVEL
MIN
MAX
GATE
P4 8 /
AT T.
front
back
Mic Level: 6600 ohms
Line Level: 8500 ohms
Balanced
Line Level: 300 ohms
Mic Level: 350 ohms
Unbalanced: 400 ohms
Direct Output: 60 ohms
–50 dBu (gain at Max)
22 dBm (THD+N at 1%)
50 mW (@ 1% THD+N) with 16 ohm load
69 dB
20 Hz to 20 kHz (±3 dB)
-130 dBu*
+48V DC
+4V DC
100/240V AC (auto-select), 50/60 Hz, 20W
32° to 104° F (0° to 40° C)
430.0 mm (16.93") W x 230.0 mm (9.05")
D x 44.0 mm (1.75") H (not including feet,
knobs and connectors)
3.8 kg (8 lbs. 6 oz)
483