AT-MX341a SmartMixer® Four-channel Automatic Mixer

The AT-MX341a automatic mixer is ideal for meetings, seminars, teleconferencing, worship services, radio and TV broadcasting and A/V applications. All switching is under microprocessor control with proprietary algorithms for instant, seamless operation. An individual priority pre-select switch for each mic/line channel allows choice of one-channel-at-a-time operation, all channels active, or any mix of moderator override. The last microphone on stays on so that ambient sound is never muted. Plus, any number of SmartMixers can be linked to create a system for large multi-mic installations. The priority control system extends throughout the entire chain.

Four Mic/Line inputs with individual priority pre-select switch for each channel

Balanced inputs and output are individually switchable between mic and line-level

Single threshold setting for all channels

Individual gain controls for each channel

Switchable manual mode overrides automatic functions

Master output level control

TTL logic output signals available to control speaker or camera switching, tally lights, etc.
12V phantom power individually selectable for each channel

Off attenuation for each input adjustable to -20 dB

Output level meter with Peak and RMS modes

Mounts in a single 19" half-rack space

Includes rack mount adapters

SPECIFICATIONS
Input Impedance	Mic: 4,000 ohms Line: 30,000 ohms
Output Impedance	Line: 200 ohms Mic: 320 ohms
Maximum Input Level	Mic: -20 dBV Line: +30 dBV
Maximum Output Level	Line: +14 dBm (600 ohms) Mic: -40 dBm (600 ohms)
Nominal Output Level	(0VU) Line: +4 dBm (600 ohms), +4.4 dBV (open circuit) Mic: -46 dBm (600 ohms), -44 dBV (open circuit)
Maximum Gain	>=70 dB
Frequency Response	60 Hz to 30 kHz at -3 dB points
Dynamic Range	75 dB +/-10 dB, dependent upon gain control settings
Equivalent Input Noise	-120 dBV (150 ohms) at maximum gain
Input Attenuation	10 dB
Mic/Line Input Pads	50 dB
Microphone Phantom Power	+12V DC
Control Voltage Out	+4V DC
Power Supply	12V AC or 15-18V DC, either polarity; 150 mA, minimum
Operating Temperature	32° to 104° F (0° to 40° C)
Dimensions	8.25" (210 mm) W x 9.38" (327 mm) D x 1.75" (44 mm) H (including feet, knobs and connectors)
Weight	3 lbs. 7 oz (1.6 kg)
Accessories Included	AC adapter, AT8325/1.0 Link Cable
Optional Accessory	AT8628 Double Rackmount Joining Plate