User manual ART MX821

[. . . ] Built in power supply and single high 19-inch rack mount format allows for easy installation and reliable long-term operation. FEATURES: · · · · · · · · Eight Independent Input Channels Level and Tone Controls on each Channel Balanced XLR Microphone and 1/4-inch Unbalanced Line Inputs on each Channel Full +48 Volt Phantom Power on XLR inputs with DIP Switch for each Channel Balanced TRS 1/4-inch Main Output Jack with Master Level Control RCA-type Pre-Fade Output Jack (Not Affected by the Master Level Control) RCA-type Aux Buss Input Jack for Channel Expansion Solid Single High Rack Mount Chassis w/ Built In Power Supply SPECIFICATIONS: · · · · · · · · · · · · · · · · · Input Connections: Output Connections: Input Impedance: Output Impedance: Maximum Input Level: Maximum Output Level: Phantom Power: Maximum Gain: Signal to Noise Ratio: THD: Equivalent Input Noise CMRR: Phase Shift: Power Requirements: Dimensions: (HxWxD in) Dimensions: (HxWxD mm) Weight: XLR-F balanced (8), 1/4-inch unbalanced (8), RCA (1) 1/4-inch balanced TRS (1), RCA (1) 2K Ohms Mic, 20K Ohms Line, 10K Ohms Aux. Bus In 200 Ohms balanced Main Out, 100 Ohms Pre-Fade Out -6dBu Mic, +18dBu Line +27dBu balanced, +21dBu unbalanced +48 Volts DC (regulated/low noise) 65dB/39dB mic/line >90dB typical <0. 01% typical -108dBu typical >52dB typical <10 degrees, 20Hz - 20kHz 120VAC / 50-60Hz, or 230VAC / 50 Hz, 15VA 1. 75 x 19 x 6 44. 5 x 483 x 152 6. 3 lbs. (2. 9kg) OPERATION a) Verify proper voltage selection on the IEC style power connector for your location. [. . . ] h) To convert the ¼" line input on any channel to a direct line output for that channel, unplug the MX821's AC cord from the wall and remove the top cover. Move the jumper for the desired channel to the left, when viewed from the front. Now that channel's line input is converted to a direct line output and may be connected to the input of another mixer. Any converted channel is still included in the main output mix as well. Do not connect the output of a mixer or any other signal source to the ¼" jack on this channel now or the channel may sustain damage. Be sure to replace the lid before plugging the unit back into the AC socket. WARNINGS All operating instructions should be read before using this equipment. To prevent the risk of electrical shock, do not remove the cover. There are no user-serviceable parts inside. Please refer servicing to a qualified service technician. Do not expose this unit to rain or moisture or to heat sources such as radiators, stoves, or other items that generate excessive heat. This unit should be cleaned only with a damp cloth. When moving this equipment, it should be placed in its original carton and packing, to reduce the risk of damage in transit. WARRANTY INFORMATION Limited Warranty 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. Applied Research and Technology will, without charge, repair or replace, at its option, defective product or component parts upon prepaid delivery to the factory service department or authorized service center, accompanied by proof of purchase date in the form of a valid sales receipt. Exclusions: This warranty does not apply in the event of misuse or abuse of the product or as a result of unauthorized alterations or repairs. This warranty is void if the serial number is altered, defaced, or removed. [. . . ] You may contact Customer Service for more assistance, or directly request a Return Authorization for service in the "resources" area of the website. 3) If you are returning the unit for service, pack the unit in its original carton or a reasonable substitute. The original packaging may not be suitable as a shipping carton, so consider putting the packaged unit in another box for shipping. [. . . ]