MX821S EIGHT CHANNEL MIC/LINE MIXER WITH STEREO OUTPUTS USER'S MANUAL
IMPORTANT SAFETY INSTRUCTIONS - READ FIRST This symbol, wherever it appears, alerts you to the presence of uninsulated dangerous voltages inside the enclosure that may be sufficient to constitute a risk. of shock This symbol, wherever it appears, alerts you to important operating and maintenance instructions in the accompanying literature. Please read the manual. Read instructions Retain these safety and operating instructions for future reference. Heed all warnings printed here and on the equipment.
INTRODUCTION The ART MX821S Eight Channel Mic/Line Mixer with Stereo Outputs is a versatile rack mount mixer combining eight independent input channels into a stereo line-level output. Each input channel accepts a balanced XLR microphone input or unbalanced 1/4-inch TS line-level signal and provides independent level and pan controls. +48 Volt phantom power may be independently selected on each microphone input.
CONNECTIONS Rear Panel Connections Mono CHANNEL Inputs (1-8) MIC Each of these eight female XLR connectors provides a balanced input for lower level microphone signals. An additional 26 dB of gain is provided for use with low output level mics. 48V phantom power is available to operate microphones that contain active electronic circuitry (such as condenser mics) and may be applied by setting the corresponding +48V PHANTOM POWER switch in the down (ON) position.
OPERATION Front Panel Controls POWER Switch Controls the application of AC power to the MX821S. When the switch is pushed in at the top (ON position), the green POWER LED lights, showing power is applied. MASTER LEVEL Control This control adjusts the overall level of the mixed signal output to the MAIN OUTPUTS (LEFT and RIGHT) jacks. CHANNEL Controls (1-8) LEVEL Each of these controls adjusts the level of the associated input channel and determines its contribution to the overall mix.
PAN Each of these controls adjusts the relative position of the associated input channel in the overall leftright panorama. Fully counterclockwise is Left and fully clockwise is Right. Rear Panel Controls +48V PHANTOM POWER Switches (1-8) These numbered switches control the application of phantom power to the corresponding numbered rear-panel MIC XLR connectors. In the OFF position (up), no phantom voltage is applied. Moving the switch down (ON position) applies phantom voltage.
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WARRANTY INFORMATION Limited Warranty (USA only) Applied Research and Technology will provide warranty and service for this unit in accordance with the following warrants: Applied Research and Technology, (ART) warrants to the original purchaser that this product and the components thereof will be free from defects in workmanship and materials for a period of three years from the date of purchase.
SERVICE The following information is provided in the unlikely event that your unit requires service. 1. Be sure that the unit is the cause of the problem. Check to make sure the unit has power, all cables are connected correctly, and the cables themselves are in working condition. You may want to consult with your dealer for assistance in troubleshooting or testing your particular configuration. 2. If you believe that the ART unit is at fault, go to www.artproaudio.com. 3.
SPECIFICATIONS Input Connections XLR female balanced (Mic, channels 1-8) 1/4-inch TS unbalanced (Line, channels 1-8) RCA unbalanced (Aux Bus In, Left and Right) Output Connections 1/4-inch TRS balanced (Main Outputs, Left and Right) RCA unbalanced (Prefade Out, Left and Right) Input Impedance 2k Ohms (Mic), 20k Ohms (Line), 51k Ohms (Aux Bus In) Output Impedance 200 Ohms (Main Outputs, balanced), 100 Ohms (Prefade Out) Frequency Response 20 Hz – 20 kHz (+0, -1 dB) (CH 1-8 in, Main out) THD <0.
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