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Professional Disc Jockey Products
DM900EX
OWNER’S MANUAL
NUMARK INDUSTRIES
http://www.numark.com
11 Helmsman Road, North Kingstown, RI 02852
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DM900EX CONGRATULATIONS! You have purchased the DM900EXStereo Mixer by Numark. This equipment features all new circuitry and the latest in manufacturing and design technology to give you greater quality and better reliability than ever before. The DM900EX brings to you the finest quality of DJ equipment available today. Thank you for buying Numark DJ products! FEATURES... • Compact design • User replaceable assignable ALPs™ crossfader • Gold Pla
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DM900EX NUMARK DM900 STEREO MIXER INDEX Introduction Page 2 Features Safety Information Page 4 Product Registration Precautions Page 5 Front Panel Diagram Page 6 Rear Panel Diagram Guided Tour of Features Page 7 Operating Instructions Connection Diagram Page 9 Specifications Page 10 Block Diagram Page 11 Warranty and Service Page 12 Numark - The Proven Leader in DJ Technology ©1998 Numark Industries 3 http://www.numark.com
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DM900EX 5. Water and Moisture - This product should be kept away from direct contact with liquids. CAUTION RISK OF ELECTRIC SHOCK 6. Heat - Avoid placing this product too close to DO NOT OPEN any high heat sources such as radiators. 7. Power Sources - This product should be CAUTION: TO REDUCE THE RISK OF ELECTRIC connected to a power supply only of the type SHOCK DO NOT REMOVE ANY COVER. NO USER- described in these operating instructions, or as SERVICEABLE PARTS INSIDE. REFER SERVICING TO
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DM900EX IMPORTANT INFORMATION... Please read this entire manual before connecting the DM900 to your system. For optimum performance: SYSTEM PRECAUTIONS • Always make sure that AC power is OFF while • Use appropriate cables throughout your system: making any connections. Quality shielded audio cables and terminated shielded video cables, low-capacitance preferred. • Do not use excessively long cables (i.e. over Speaker cables must be 14-gauge minimum; 12- or 50ft/14m) Be sure plugs and jacks ar
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DM900EX DM900EX FRONT PANEL DIAGRAM... 8 1 5 6 7 2 2 3 3 4 DM900EX REAR PANEL DIAGRAM... 5 5 2 1 6 4 3 4 3 7 Numark - The Proven Leader in DJ Technology ©1998 Numark Industries 6 http://www.numark.com
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DM900EX GUIDED TOUR OF FEATURES AND OPERATING INSTRUCTIONS... CROSSFADER SECTION If the DM900 is your first mixer, please read this entire 4. The Replaceable Crossfader achieves clean manual before you begin operation. segues between the two input channels. If you are an experienced DJ, simply replace your old mixer. The DM900 can be rack-mounted or used as a "Hard left" selects Channel 1. "Hard right" selects free-standing unit (four 6" rack unit spaces). Channel 2. With the crossfader center
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DM900EX REAR PANEL: INPUTS AND OUTPUTS (Please refer to diagram on page 7) 1. Power Input. Plug your external power supply into 5. Line/Phono Input switch. Use this to allow line here. See safety precautions on page 3 for proper level equipment to be plugged into your phono inputs treatment of the power cord. giving you a total of 8 line input options. 2. GND is the grounding lug for all turntables. Always 6. The Tape Outputs are low-impedance unbalanced use this connection (your turntable cab
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DM900EX DM900EX CONNECTION DIAGRAM... Turntable 2 Turntable 1 Turntable 3 CD Player Power Supply Main Tape Deck Sound System w/ Amplifier Numark - The Proven Leader in DJ Technology ©1998 Numark Industries 9 http://www.numark.com
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DM900EX SPECIFICATIONS... INPUTS: Line: 47kΩ input impedance 100mV rms sensitivity (for 1.22 V output) Phono: 47kΩ input impedance 1.5 mV rms sensitivity @ 1 KHz (for 1.22 V output) OUTPUTS: Line: 7.2V rms max (+19 dBm) Headphone Amp: .5 watt into 47Ω Distortion less than .01% SIGNAL TO NOISE RATIOS (vs. maximum output): Line: Better than 88 dB Phono: Better than 78 dB FREQUENCY RESPONSE: Line: 20 Hz- 20k Hz + _ .5 dB Phono: + _ 1 dB except for controlled attenuation of -3 dB @ 20 Hz to reduce
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DM900EX BLOCK DIAGRAM... Numark - The Proven Leader in DJ Technology ©1998 Numark Industries 11 http://www.numark.com
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Professional Disc Jockey Products Warranty and Service Information Numark Industries, LLC and Numark International, Inc. (hereafter “Numark”) warrants each new product manufactured and/or supplied by it to be free from defects in material or workmanship under conditions of normal use and service for 360 days, beginning on the date of purchase from an authorized Numark Dealer, but not to exceed 2 years from date of shipment by Numark. The Numark obligation under this warranty is limited to repa
