Audio Technica SmartMixer AT-MX351 Installation And Operation Manual Download | Manualshive

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AT-MX351 SmartMixer



Automatic Mixer

Installation and Operation

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Summary of Contents for SmartMixer AT-MX351

Page 1: ...AT MX351 SmartMixer Automatic Mixer Installation and Operation ...

Page 2: ...s and Lockout Bus 8 NOMA 9 Auxiliary Input 9 Preamplifier Gain 9 Output Level 10 Phantom Power 10 Output Level LED Meter 10 Adjusting Off Attenuation 12 Preamp Outputs 12 Input Limiters 12 Force on Force off 12 Control Voltage Out 13 Daisy chaining Mixers 14 Rack Mounting 14 Security Caps 14 Specifications 15 Warranty Back cover ...

Page 3: ...e Note Line Voltage Selector Switch You will find the line voltage selector switch on the bottom panel Before your model is shipped from the factory the switch is set to the power requirements of the destination Nevertheless you should check that it is set properly before plugging the power cord into the wall outlet If the voltage requirements differ adjust the selector switch as follows Before ad...

Page 4: ...s ensures proper gating levels for existing ambient sound conditions Priority Pre select To custom tailor conferencing needs the mode of each microphone channel can be indepen dently switched via the front panel Priority Pre select DIP switches The combination of switch settings results in three different modes of priority selection operation In any of the three modes of operation when everyone st...

Page 5: ... 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 8 Manual mode switch Setting this switch in the up position bypasses all of the SmartMixer s automatic functions except limiting and NOMA if selected 9 Lockout LED indicator Shows w...

Page 6: ...line level 10 dBV auxiliary input 6 Preamp Outputs Independent unbalanced 10 dBV switchable pre post controller outputs from mic channels 7 Inputs Balanced microphone inputs for low impedance dynamic or condenser mics Can be changed to line level inputs via internal switches see page 11 XLRF type connectors Can supply 48V phantom power via internal switches 8 Power input 120V 230V AC 50 60 Hz Sele...

Page 7: ...e the unit will behave like a conventional mixer all automatic functions are bypassed except for limiting and NOMA if selected 11 Adjust the Master level control for desired output level This control is at the last stage in the mixer and does not affect microphone gain threshold setting meter indication monitor or preamp outputs Priority Microphones and the Lockout Bus Channels 1 4 Once the Gain c...

Page 8: ...the unit remove the top cover and change the setting of the switch designated on the circuit board by SW25 Figs 4 and 5 page 11 NOMA serves to maintain overall system gain by proportionately reducing amplifier gain as the number of open microphones increases In a sound reinforcement system this can tend to preserve the feedback margin and system stability However this action necessarily reduces th...

Page 9: ...the circuit board by SW1 SW7 SW13 and SW19 Figs 4 and 5 page 11 Changing the settings of these switches will disable phantom power on channels 1 2 3 and 4 respectively Note that although they do not require phantom power for operation most balanced output dynamic microphones can be used without disabling the SmartMixer s phantom power Output Level LED Meter The Output Level LED meter is factory se...

Page 10: ...12 Min 6 dB 10 dB 10 dB VR2 10 dB 10 dB VR2 10 dB 10 dB VR5 10 dB 10 dB VR8 10 dB 10 dB VR11 Phantom Off SW1 30 dB SW2 40 dB Phantom Off SW7 30 dB SW8 40 dB Phantom Off SW13 30 dB SW14 40 dB Phantom Off SW19 30 dB SW20 40 dB SW22 Off On SW4 Off On SW10 Off On SW16 Off On SW27 Peak RMS Meter Off On SW25 NOMA Line Mic Output SW26 Mic Line SW9 Mic Line SW15 Mic Line SW21 SW6 SW12 SW18 SW24 Gating Off...

Page 11: ...To gate these outputs unplug the unit remove the top cover and locate the switches designated on the circuit board by SW6 SW12 SW18 and SW24 Figs 4 and 5 page 11 Change the switch position s to Gating for channels 1 2 3 and or 4 respectively as desired Input Limiters Independent adjustable limiters are available on all mic channels To adjust the limiter threshold of channel 1 unplug the unit remov...

Page 12: ...l LED on the front panel the channel s associated Control Voltage Out goes high 4 VDC See chart on page 12 for pin connection This signal can be used to light indicator lamps switch speaker zones on and off select video cameras etc The control voltage should not be connected directly to an inductive load such as a relay coil as damage to the mixer may result Several interface circuit possibilities...

Page 13: ... linked with AT MX341 and or AT MX341a mixers the NOMA function will pass through the AT MX341 a models but their mics will not be included in the NOMA calculation Rack Mounting Provided with each mixer are two rack ears and six self tapping screws to attach the ears to the unit which allow the unit to be mounted in a 1U rack space Security Caps For permanent installations where microphone selecti...

Page 14: ...put Noise1 128 dBV 150 ohms at maximum gain Input Attenuation 10 dB Mic Line Input Pads 50 dB Maximum NOMA Attenuation 20 dB up to 100 mics on simultaneously Microphone Phantom Power 48V DC Control Voltage Out 4V DC Power Supply 120V 230V AC switchable 50 60 Hz 10W Operating Temperature 32 to 104 F 0 to 40 C Dimensions 16 93 430 mm W x 9 38 327 mm D x 1 75 44 mm H including feet knobs and connecto...

Page 15: ... failure to use product in accordance with instructions This warranty is void in the event of unauthorized repair or modification For return approval and shipping information contact the Service Department Audio Technica U S Inc 1221 Commerce Drive Stow Ohio 44224 Except to the extent precluded by applicable state law A T U S will have no liability for any consequential incidental or special damag...

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