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SmartMixers
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Wired Microphones
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PC desktop Microphone
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Wireless Systems
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Wireless Microphones
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Related Products:
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General Sales:
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AT-MX351 SmartMixerŽ
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The AT-MX351 is an automatic 5-channel mixer is ideal for meetings, seminars, conferencing, 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.
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For more information about the availability of the AT-MX351 SmartMixer or other audio-technica products, please contact
21st Century Video Limited by; Phone: 0845 09 40 570, FAX: 0870 80 30 410 or email:
sales@c21video.com
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| Features: |
- Four automatic Mic/Line inputs, plus Aux in
- Automatic threshold setting
- 48V phantom power individually selectable for each channel
- Limiters on each mic channel prevent individual channel overload
- Balanced inputs and output, selectable Mic/Line-level
- Individual gain controls for each channel
- Switchable manual mode overrides automatic functions
- Master output level control
- Pre- or post-controller audio outputs from Mic/Line channels
- Off attenuation for each input adjustable to -40 dB
- Sub-D connector for TTL output, plus closure-control input for external control of each channel
- NOMA operation provided, can be turned on/off
- Output level meter with Peak and RMS modes
- Monitor headphone output with adjustable level
- Internal AC supply
- Mounts in a single 19" rack space
- Includes rack mount adapters
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AT-MX351 Front Panel Details: |
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(left to right) |
- Power switch.
- Selected Channel LED indicators. Indicate which channels are "on" or "active."
- Input Gain controls. Adjust inputs for microphone sensitivities and/or operating conditions.
- Aux In control. Adjusts input for source output level and/or operating conditions.
- Output Level LED meter. Indicates RMS output level of the mixer. "Zero" (0) level is factory
calibrated for an output of +4 dBm into 600 ohms (Master level control fully clockwise). Can be set for
peak output level indication via internal switch.
- Priority Pre-select switches (1-4). A switch in the "up" position assigns the respective
channel priority over the other channels. A priority channel can not be locked out by other channels.
Any combination of priority/non-priority selections is allowed.
- Manual mode switch. Setting this switch in the "up" position bypasses all of the SmartMixer's
automatic functions, except limiting and NOMA if selected.
- Lockout LED indicator. Shows when lockout bus is active.
- Master level control. Adjusts mixer output level for operating conditions.
- Headphone output. 1/4" TRS jack.
- Monitor Headphone Level control.
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AT-MX351 Rear Panel Details: |
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(left to right) |
- External Control connector. For TTL output, plus closure-control input for external control of each channel.
- Link In/Link Out. Provides for daisy-chaining of multiple mixers when more than four
microphones are used.
- Line/Mic balanced output. Level can be changed via internal switch. XLRM-type connector.
- Aux In. Unbalanced, line-level (-10 dBV), auxiliary input.
- Unbalanced line-level (-10 dBV) output. RCA jack.
- Preamp Outputs. Independent, unbalanced (-10 dBV), switchable pre/post-controller outputs from mic
channels.
- Inputs. Balanced microphone inputs for low-impedance dynamic or condenser mics.
Can be changed to line-level inputs via internal switches. XLRF-type connectors. Can supply 48V phantom power
via internal switches.
- Power input. 120V/230V AC, 50/60 Hz. Select input voltage via switch on bottom panel.
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| Technical Specifications: |
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| Input Impedance: |
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Mic: |
8,000 ohms |
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Line: |
50,000 ohms |
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Aux: |
50,000 ohms |
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Link In: |
20,000 ohms |
| Output Impedance: |
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Mic: |
300 ohms |
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Line: |
200 ohms |
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Unbalanced: |
400 ohms |
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Link Out: |
100 ohms |
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Preamp Out: |
750 ohms |
| Maximum Input Level: |
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Mic: |
-24 dBV |
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Line: |
+27 dBV |
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Aux: |
+17 dBV |
| Maximum Output Level:1 |
+22 dBm |
| Nominal Output Level: (0 VU)1 |
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Mic: |
-46 dBm (600 ohms), -44 dBV (open circuit) |
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Line: |
+4 dBm (600 ohms), +4.4 dBV (open circuit) |
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Unbalanced: |
-10 dBV (open circuit) |
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Preamp Out: |
-10 dBV (open circuit) |
| Maximum Monitor Output:2 |
700 mW, 20 ohm load |
| Maximum Gain: |
>=73 dB |
| Frequency Response: |
40Hz to 22kHz |
| Equivalent Input Noise: |
-128 dBV (150 ohms) at maximum gain |
| Input Attenuation: |
10 dB |
| Mic/Line Input Pads: |
50 dB |
| Microphone Phantom Power: |
+48V DC |
| Control Voltage Out: |
+4V DC |
| Power Supply: |
120/230V AC (switchable), 50/60 Hz, 10W |
| Operating Temperature: |
32o to 104o F
(0o to 40o C) |
| Dimensions: (WxDxH) |
16.93" (430 mm) x 9.38" (238 mm) x 1.75" (44 mm)
(including feet, knobs and connectors) |
| Weight: |
6 lbs. 13 oz (3.1 kg) |
| Accessories Included: |
AC power supply, AT8325/1.0 Link Cable, rack mount adapters |
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| 1) Master Level control at maximum (fully clockwise) |
| 2) Input terminated with 150 ohms, A-weighted using Audio Precision
System One |
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Updated: 16 April 2008.