Nady Systems GEQ215, GEQ231, GEQ131 owner manual Front Panel Controls & Connections, Eq On/Off

Front Panel Controls & Connections

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1. Power Switch

To turn the equalizer ON or OFF, press the upper or lower portion of this button. The internal LED indicator will light when the unit is on.

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 to avoid any turn on/off transient noise.

2. Gain Control

The Gain control allows adjustment between OFF (center detent) and +/-12dB. 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. Unity gain can be achieved by setting this control to its center detent position. The unit is equipped with a red Peak LED, which illuminates when the signal reaches 3dB prior to clipping. It is acceptable for the Peak LED to flash occasionally, however, if the Peak LED is flashing steadily, the Gain control should be reduced to avoid distortion.

3. Low-Cut Filter

This switch enables a low cut filter at 40Hz, 12dB/octave to remove unwanted low frequencies from the signal to prevent

stage rumble and low frequency resonance that can occur while using speakers in an enclosed acoustic environment. The LED status indicator will light yellow when the Low Cut is enabled.

4. EQ ON/OFF

This switch enables or bypasses the equalizer filters. If you disable the EQ ON/OFF switch, the LED will turn off and the unit will be in bypass mode. In bypass mode, the audio signal will flow through without any equalization although the Gain control will still be active.

5. Output Level LED Bargraph

This four-stage LED bargraph illuminates according to the output signal level. The red Peak LED lights at 3dB prior to clipping. Occasional blinking of the Peak LED is acceptable, but if it remains on more than intermittently you should turn down either the equalizer’s level controls or reduce the input Gain level.

6. Filter Level Slider Controls

Each one of these linear potentiometers will boost or cut its noted frequency by +/-12dB. When all of the sliders are in center detent position, the output of the equalizer is flat. Each slider is marked with the center frequency of its band pass filter.