Professional Disc Jockey Products DM 1820X STEREO MIXER OWNER’S MANUAL NUMARK INDUSTRIES 11 Helmsman Road, North Kingstown RI 02852 http://www.numark.
DM1820X Numark - The Proven Leader in DJ Technology ©1997 Numark Industries 2 http://www.numark.
DM1820X 6. Heat - Avoid placing this product too close to any high heat sources such as radiators. CAUTION RISK OF ELECTRIC SHOCK DO NOT OPEN CAUTION: TO REDUCE THE RISK OF ELECTRIC SHOCK DO NOT REMOVE ANY COVER. NO USERSERVICEABLE PARTS INSIDE. REFER SERVICING TO QUALIFIED SERVICE PERSONNEL ONLY.
DM1820X NUMARK DM1820X STEREO MIXER INDEX Safety Information Product Registration Page 3 Introduction and Features Page 5 Precautions Page 7 Front Panel Diagram Page 8 Rear Panel Diagram Page 11 Connection Instructions Page 12 Connection Diagram Page 13 Specifications Page 14 Block Diagram Page 15 Warranty and Service Page 16 Numark - The Proven Leader in DJ Technology ©1997 Numark Industries 4 http://www.numark.
DM1820X CONGRATULATIONS! You have purchased the D M 1 8 2 0 X Stereo 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 DM 1820X Preamp Mixer has been designed by DJs for DJs. It gives you all of the controls and features you need in a professional piece of equipment to show off the best of your skills. Thank you for buying Numark DJ products! FEATURES...
DM 1820X As a special bonus we have included a right angle headhpone adapter with this mixer. Just plug your headphones into the adapter and then plug the adapter into your mixer. Numark - The Proven Leader in DJ Technology ©1997 Numark Industries 6 http://www.numark.
DM1820X IMPORTANT INFORMATION... Please read this entire manual before connecting the DM1820X 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.
DM 1820X DM1820X FRONT PANEL DIAGRAM... 23 22 1 19 2 3 5 21 20 4 6 18 16 7 17 8 11 9 12 13 14 10 15 1. Channel Input Gain/Trim/Attenuation Controls. 5. DJ Mic Talkover Switch. When engaged this mutes These control the sensitivity of the inputs for Channels 1-4. your music sources from channels 1-4. Releasing it brings Use these whenever a particular source causes overload of you immediately back to full source level. It is very useful the preamp inputs.
DM1820X 9. The Crossfader In/Out Pushbutton defeats the leaving the other frequencies playing. This area is always entire Crossfader function but leaves the Kill functions active even when the crossfader is not. Try that for a neat active. effect, or mix one channel’s treble with another channel’s bass (by cutting the mid and bass on the first channel and 10. Crossfader/Kill Assign Switches lets you choose the treble and mid on the other channel.
DM 1820X Numark - The Proven Leader in DJ Technology ©1997 Numark Industries 10 http://www.numark.
DM1820X DM1820X REAR PANEL DIAGRAM... 8 11 10 1 8 12 6 4 2 1. The Balanced Main Outputs are low-impedance XLR type connectors controlled by the Master fader. 2. The Stereo Main Outputs are low-impedance RCA connectors controlled by the Master fader. 3. The Tape Outputs are low-impedance unbalanced RCA jacks which output the program mix and allow you to connect any recording device. 4. The Stereo Zone Outputs are low-impedance unbalanced RCA jacks controlled by the Zone Level controls. 5.
DM 1820X Instructions for Connection.... 1. Be sure the POWER (22) is OFF. All connections should be made before the unit is turned on. Always remember “Turn Amps on last and off first!” 2. Use appropriate cables throughout your system: quality shielded audio cables, low capacitance preferred. Speaker cable must be 14-gauge minimum; 12- or 10-gauge is better. 3. Connect your music sources on the rear of the unit. Up to 3 phono and 8 line sources (CD players, cassette decks, tuners, etc.
DM1820X DM1820X CONNECTION DIAGRAM... Zone 1 Tape Deck Sound System w/ Amplifier Sampling Keyboard Zone 2 Turntable 1 Sound System w/ Amplifier AC Outlet Microphones Turntable 2 Tape Deck Main Sound System w/ Amplifier CD Player Dual CD Player Turntable 3 Numark - The Proven Leader in DJ Technology ©1997 Numark Industries 13 http://www.numark.
DM 1820X SPECIFICATIONS... INPUTS: Line: 10kΩ input impedance 100 mV rms sensitivity (for 1.22 V output) Mic: 10kΩ input impedance balanced/unbalanced 3 mV rms sensitivity (for 1.22 V output) 50 mV rms max input Phono: 47kΩ input impedance 1.5 mV rms sensitivity @ 1 KHz (for 1.22 V output) OUTPUTS: Line: 9V rms max (+20 dBm) Headphone Amp: 5 watt into 47Ω Distortion less than .01% SIGNAL TO NOISE RATIOS (vs.
DM1820X BLOCK DIAGRAM... Numark - The Proven Leader in DJ Technology ©1997 Numark Industries 15 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.