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Hersteller: Nady Systems Dateigröße: 844.02 kb Dateiname: Unterrichtssprache:

• Avoid using spray type insecticide or solvents near the equipment. It can damage the finish an might ignite suddenly • To avoid damaging the finish, never use denatured alcohol, paint thinner or other similar chemicals to clean 6 the equipment. • Place the unit on a flat and solid surface or in a rack. • To enjoy your NADY AUDIO graphic equalizer for a long time, please read this owner’s manual thoroughly. Signal Levels Signal levels from -18dBu to +18dBu are considered normal. Do not directly connect microphones into the equalizers. Microphones require a pre amp. Chassis Grounding NADY AUDIO equalizers are equipped with a rear panel ground lift switch. If, after setting up your system, the system exhibits excessive hum or buzzing, the problem may be that there is a ground incompatibility between your equalizer the other equipment in the same system. There are several combinations that can be attempted. Note: ALWAYS TURN YOUR AMPLIFIERS DOWN BEFORE CHANGING YOUR GROUNDS AROUND. Try different combinations of lifting grounds with the ground lift switches or make sure all chassis are connected to earth ground, either through the A.C. power cord ground or by the front panel rack mount screws. Before starting to equalize your sound system there is some information you should know and procedures you should follow: • These NADY AUDIO equalizers are equipped with a BYPASS switch with an LED indicator. If you disable the BYPASS switch, the LED will turn off and all equalization settings will be restored. In bypass mode, the audio signal will flow through at unity gain. • Use the range selection switch to select between a 6db or 12dB level adjust range. The dual color range LED will indicate green for 6dB and red for 12dB. • The input level control allows adjustment between OFF (center detent) and +/-6dB. Note: The unit is equipped with a red overload LED, which illuminates when the signal reaches 5dB prior to clipping. It is normal for the overload LED to flash occasionally, but if the overload LED is on steady you must readjust the level control. Below are some tips to follow while doing the initial set-up. 1. Set channel levels to the center detent (0dB-unity gain) on the front panel. 2. Enable the BYPASS switch (Note: The red LED is ON). 3. Set all slide controls to the center detent or 0dB (unity gain) position. 4. Select the 6dB range switch (green LED ON). 5. Apply signal to the system. 6. Disable the BYPASS switch, red LED OFF. 7. If the CLIP (overload) LED is on you must turn down the level control. 8. You may now start equalizing your system. 9. Switch the range switch to 12dB (red LED is lit) if the 6dB range does not provide sufficient gain. 1. Power Switch To turn the equalizer ON or OFF, press the upper or lower portion of this button. CAUTION: Always turn on your equalizer BEFORE your power amplifiers are turned on, and always turn off your equalizer AFTER your power amplifiers have been turned off. 2. Input Level Control This controls the level of signal to the equalizer. It is capable of +/- 6dB of gain. This control is used to adjust for variation in input level to the equalizer channel, or to compensate for the equalization applied to the input signal. Turn this control down if the CLIP LED illuminates steady (meaning too strong an input signal). Unity gain can be set by turning this knob to its center detent position. 3. Low-Cut/High-Pass Filter (GEQ 131/131LF/231) These equalizers are equipped with a 10Hz, 12dB/octave, variable Low Cut/High-Pass Filter (HPF) to cut down unwanted low frequency signal. Because of its high roll-off slope, the HPF can be efficiently used to attenuate the "HUM" noise from preceding instruments, or to prevent the low frequency resonance that can occur when speakers are installed in an enclosed acoustic environment. 3A. High-pass Filter Switch and Indicator (GEQ 215/215LF) 40 Hz, 12dB/octave HPF. LED lights when activated. 4. Filter Range Switch & Indicators The gain range of the filter sliders is switchable (as a group) from +/-6dB to +/-12dB for maximum boost/cut capability. At 6dB the green LED will illuminate and at 12 dB the red LED will illuminate. 5. In/Out Bypass Switch & Indicator This switch inserts or removes the equalizer channel from the signal path. The red LED lights when the switch is depressed to indicate that the unit or channel is in the equalizing mode. In the bypass mode, the signal is routed from the input directly to the output. The bypass function is FET switched to prevent switching transients when inserting the equalizer into the circuit path. Use this switch to compare equalized and une...

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