Professional Disc Jockey Products DM900EX OWNER’S MANUAL NUMARK INDUSTRIES 11 Helmsman Road, North Kingstown, RI 02852 http://www.numark.
DM900EX CONGRATULATIONS! You have purchased the D M 9 0 0 E XStereo 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 D M 9 0 0 E X brings to you the finest quality of DJ equipment available today. Thank you for buying Numark DJ products! FEATURES...
DM900EX NUMARK DM900 STEREO MIXER INDEX Introduction Features Page 2 Safety Information Product Registration Page 4 Precautions Page 5 Front Panel Diagram Rear Panel Diagram Page 6 Guided Tour of Features Operating Instructions Page 7 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.
DM900EX 5. Water and Moisture - This product should be kept away from direct contact with liquids. CAUTION RISK OF ELECTRIC SHOCK DO NOT OPEN 6. H e a t - Avoid placing this product too close to any high heat sources such as radiators. CAUTION: TO REDUCE THE RISK OF ELECTRIC SHOCK DO NOT REMOVE ANY COVER. NO USERSERVICEABLE PARTS INSIDE. REFER SERVICING TO QUALIFIED SERVICE PERSONNEL ONLY.
DM900EX IMPORTANT INFORMATION... Please read this entire manual before connecting the DM900 to your system. For optimum performance: • Always make sure that AC power is OFF while making any connections. • Do not use excessively long cables (i.e. over 50ft/14m) Be sure plugs and jacks are tightly mated. Loose connections can cause hum, noise or intermittents that could easily damage your speakers. • Never use spray cleaners on the slide controls.
DM900EX DM900EX FRONT PANEL DIAGRAM... 8 1 5 6 7 2 2 3 3 4 DM900EX REAR PANEL DIAGRAM... 5 5 2 1 7 6 4 3 4 3 Numark - The Proven Leader in DJ Technology ©1998 Numark Industries 6 http://www.numark.
DM900EX GUIDED TOUR OF FEATURES AND OPERATING INSTRUCTIONS... CROSSFADER SECTION If the D M 9 0 0 is your first mixer, please read this entire manual before you begin operation. If you are an experienced DJ, simply replace your old mixer. The D M 9 0 0 can be rack-mounted or used as a free-standing unit (four 6" rack unit spaces). 4. The Replaceable Crossfader achieves clean segues between the two input channels. "Hard left" selects Channel 1. "Hard right" selects Channel 2.
DM900EX REAR PANEL: INPUTS AND OUTPUTS (Please refer to diagram on page 7) 1. Power Input. Plug your external power supply into here. See safety precautions on page 3 for proper treatment of the power cord. 5. Line/Phono Input switch. Use this to allow line level equipment to be plugged into your phono inputs giving you a total of 8 line input options. 2. GND is the grounding lug for all turntables. Always use this connection (your turntable cable should have a grounding wire). 6.
DM900EX DM900EX CONNECTION DIAGRAM... Turntable 1 Turntable 2 CD Player Power Supply Turntable 3 Main Sound System w/ Amplifier Tape Deck Numark - The Proven Leader in DJ Technology ©1998 Numark Industries 9 http://www.numark.
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 + _ .
DM900EX BLOCK DIAGRAM... Numark - The Proven Leader in DJ Technology ©1998 Numark Industries 11 http://www.numark.
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.
