valutazioni - 4, GPA: 4.8
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Facilità d'uso
Please record the serial number of your unit as shown on the back of the chassis as well as the name of the dealer from whom you purchased the unit. Retain this information for your records. Please return the warranty card enclosed to register your mixer with us. MODEL: DM900 PURCHASED FROM:_________________________ SERIAL NUMBER:__________________ DATE OF PURCHASE:________________________ Numark - The Proven Leader in DJ Technology ©1998 Numark Industries 4 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. Residues cause excessive dirt build-up and this will void your warranty. In normal use slide controls can last for many years. If they malfunction (usually because of a dirty or dusty environment) consult a professional technician. • Never attempt to make any adjustments or repairs other than those described in this manual. Take the DM900 to your dealer or to an authorized Numark Service Center. A NOTE ON CABLES: Make the input and output connections with readily available low-capacitance stereo cables. Quality cable makes a big difference in audio fidelity and punch. See your Numark dealer or an electronics or audio specialist store if you are not sure which cables to get. SYSTEM PRECAUTIONS • 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. • Reliability will be enhanced through the use of banana connectors on the speaker wires. Observe correct speaker wire polarity. If in doubt, consult your Numark dealer or a qualified technician. • Take care to connect only one cable at a time. Pay attention to the color-coded, labelled Input and Output jacks. • ALWAYS remember: “TURN AMPS ON LAST AND OFF FIRST”. Begin with master faders or volume controls on minimum and the amplifier gain/input control(s) down. Wait 8 to 10 seconds before turning up the volume. This prevents transients which may cause severe speaker damage. • Use restraint when operating controls. Try to move them slowly. Rapid adjustments could damage speakers due to amplifier clipping. • Avoid amplifier “clipping” at all costs: this occurs when the red LEDs (usually on the front panel of most professional power amplifiers) start flashing. “Clipping” is when the power amplifier is distorting and working beyond it’s limits. Amplifier distortion is THE major cause of speaker failure. • To prevent fire or shock hazard, do not expose the unit to rain or moisture. Never place cans of beer, soda, glasses of water or anything wet on top of the mixer! Numark - The Proven Leader in DJ Technology ©1998 Numark Industries 5 DM900EX DM900EX FRONT PANEL DIAGRAM... 18 76 5 4 3 2 2 3 DM900EX REAR PANEL DIAGRAM... 334 4 5 5 Numark - The Proven Leader in DJ Technology ©1998 Numark Industries 6 DM900EX GUIDED TOUR OF FEATURES AND OPERATING INSTRUCTIONS... If the DM900 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 DM900 can be rack-mounted or used as a free-standing unit (four 6" rack unit spaces). INSTALLATION AND OPERATION Study the Connections Diagram on page 13. First, connect all stereo input sources. Next connect your monitor headphones. Make sure all faders are at "zero" and the unit is off. Finally, connect the stereo outputs to the power amplifier(s) and/or audio sources. Plug the DM900 into it’s power supply and plug this into power. Now you are ready to switch it on. 1. Power Switch and Power-On LED. The DM900 is divided into five functional blocks: Input, Crossfader, Monitoring, and Master Output. It is important to learn how each of these work. CHANNEL INPUTS SECTION 2. Channels 1 & 2 Input Toggle Switches select which source will be live to that channel based on what you have connected to the rear panel input section. 3. The Input Faders are low-noise, low-impedance, high-quality, smooth Alps™ faders. These control individual source levels in the mix. CROSSFADER SECTION 4. The ReplaceableCrossfader achieves clean segues between the two input channels. "Hard left" selects Channel 1. "Hard right" selects Channel 2. With the crossfader centered both assigned channels are live. Use the crossfader for fast and seamless segues from one selected channel to the other. Note: The crossfader is user replaceable in case of failure. Simply unscrew the two large screws which hold it in place, lift it out and disconnect it’s cable. Re-attach the new crossf...