Nady Systems GEQ 231, GEQ 131LF, GEQ 215LF owner manual Precautions

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Precautions

Protecting yourself from electric shock:

Never touch the plug with wet hands.

Always pull out by the plug and never the cord.

Only let a qualified professional repair the equipment. An unauthorized person might touch the internal parts and receive a serious electric shock.

Never allow a child to put anything, especially metal, into the equipment.

Protecting your NADY AUDIO Graphic Equalizer:

Use only a household AC power source. Never use a DC power source.

If water is spilled on or in the unit, unplug it and call for service.

Make sure that the equipment is well ventilated and away from direct sunlight

Avoid damage to the internal circuits and the external surface by keeping the unit away from sources of high heat.

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.

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Contents OWNER’S’S Manual Congratulations GEQ-SeriesGraphic Equalizer GEQ Series FeaturesInput/Output Connections Power ConnectionPrecautions GEQ 215/215LF Rear Panel Controls and Connections Studio Applications Sound Reinforcement ApplicationsMusical Instrument Applications Equalizer WeightInputs OutputsPage Service for Your Nady Audio Product
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GEQ 131, GEQ 215, GEQ 215LF, GEQ 131LF, GEQ 231 specifications

The Nady Systems GEQ 215 is a powerful graphical equalizer designed to enhance the sound quality and performance of audio systems. Renowned for its versatile application in live sound reinforcement, broadcasting, and studio recordings, the GEQ 215 exhibits robust features that make it essential for audio professionals and enthusiasts alike.

One of the core features of the GEQ 215 is its 15-band equalization, which allows users to tailor the frequency response of their audio signals with precision. Each band offers a range of ±12 dB of gain adjustment, empowering users to effectively boost or cut specific frequency bands. This level of control is vital for addressing common audio issues such as feedback, resonance, and tonal imbalances, ensuring that every sound source in the mix shines through clearly.

The GEQ 215 utilizes a 1/3-octave frequency center spacing, allowing for fine-tuned adjustments across the audible spectrum, from 20 Hz to 20 kHz. This wide range ensures that both low-end and high-end frequencies can be manipulated effectively, making it suitable for various applications, including musical performances, corporate events, and public speaking engagements.

Another standout feature of the GEQ 215 is its user-friendly interface. The front panel is equipped with backlit sliders that provide clear visual feedback, making it easy to identify settings even in low-light environments. Additionally, the unit has a bypass switch, allowing users to compare the processed and unprocessed audio signal quickly, which is essential for making informed adjustments during live performances or studio sessions.

The GEQ 215 also boasts high-quality components and construction aimed at ensuring reliability and durability. Balanced XLR and 1/4" TRS inputs and outputs allow for seamless integration into various audio setups, minimizing noise and maximizing signal integrity. Its rugged metal chassis is designed to withstand the rigors of both touring and permanent installation, making it a reliable choice for any sound engineer.

Furthermore, the device incorporates advanced technologies that enhance its performance. With a low-frequency response that features a high-pass filter, the GEQ 215 can effectively reduce rumble and unwanted low-frequency noise. It also includes LED level metering for each band, allowing users to monitor signal levels visually, preventing distortion and overload.

Overall, the Nady Systems GEQ 215 stands out as a high-performance equalizer that combines superior sound quality, user-friendly operation, and robust construction. With its comprehensive features, it remains an invaluable tool for achieving optimal sound in any audio environment. Whether for a live concert or a recording session, the GEQ 215 is equipped to deliver outstanding results.