Professional Disc Jockey Products DM1720X STEREO MIXER OWNER’S MANUAL NUMARK INDUSTRIES 11 Helmsman Road, North Kingstown RI 02852 http://www.numark.
DM1720X Safety Information and Product Registration 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 USER- SERVICEABLE PARTS INSIDE. REFER SERVICING TO QUALIFIED SERVICE PERSONNEL ONLY.
DM1720X NUMARK DM1720X STEREO MIXER INDEX Safety Information Product Registration Page 2 Introduction and Features Page 4 Precautions Page 5 Front Panel Diagram Page 6 Rear Panel Diagram Page 8 Connection Instructions Page 9 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.
DM1720X CONGRATULATIONS! You have purchased the D M 1 7 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 DM1720X 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...
DM1720X IMPORTANT INFORMATION... Please read this entire manual before connecting the DM1720X to your system. For optimum performance: SYSTEM PRECAUTIONS • Always make sure that AC power is OFF while making any connections. • Use appropriate cables throughout your system: Quality shielded audio cables and terminated shielded video cables, low-capacitance preferred. Speaker cables must be 14-gauge minimum; 12- or 10-gauge is better. • Do not use excessively long cables (i.e.
DM1720X DM1720X FRONT PANEL DIAGRAM... 4 1 20 21 18 2 19 3 5 6 17 7 15 16 8 10 9 12 13 14 11 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. Attenuation range is 0dB to -20dB.
DM1720X 9. The Crossfader In/Out Pushbutton defeats the 15. Master Level. This controls overall output level. Note entire Crossfader function but leaves the Kill functions that you can select (18) whether you want stereo or mono. active. 16. The Zone Levels control speaker volume for other outputs 10. The replaceable Crossfader achieves clean segues such as control booth monitors, a tape deck, another between two selected input channels.
DM1720X DM1720X REAR PANEL DIAGRAM... 1 11 4 3 2 7 7 7 9 7 9 7 9 6 5 10 1. GND is the grounding lug for turntables 1, 2 and 3 7. Channels 1-5 Line Inputs are unbalanced RCA (phono inputs on Channels 1, 2 and 3). Always use this jacks. The Line Input is selected with the toggle switch connection (your turntable cable should have a grounding on the front panel. You can connect stereo audio from HiFi wire).
DM1720X Instructions for Connection.... 1. 2. 3. 4. 5. 6. 7. Be sure the POWER is OFF. All connections should be made before the unit is turned on. Always remember “Turn Amps on last and off first!” 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. Connect your music sources on the rear of the unit. Up to 3 phono and 8 line sources (CD players, cassette decks, tuners, etc.
DM1720X SPECIFICATIONS... INPUTS: Line: 47kΩ input impedance 78mV rms sensitivity (for 1.22 V output) Mic: 10kΩ input impedance balanced/unbalanced 3 mV rms sensitivity (unbalanced for 1.22 V output) 1.5 mV rms sensitivity (balanced for 1.22 V output) 80 mV rms max input (unbalanced) 40 mV rms max input (balanced) Phono: 47kΩ input impedance 1.2 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 .
DM1720X 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.
