Nady GEQ 215, GEQ 131, GEQ 231 operating instructions

OWNER’S MANUAL

GEQ Series

EQUALIZERS

Graphic Equalizers

GEQ Series

Graphic Equalizers

Congratulations on your choice of graphic equalizers — you have
purchased one of the finest graphic equalizers on the market
today. This unit was developed using the expertise of professional
sound engineers and working musicians. You will find that your
new NADY AUDIO Equalizers has superior performance and
greater flexibility than any other equalizers in its price range.
Please read this manual carefully to get the most out of your new
unit.

GEQ 131 — 1 channel, single rack space (1U), 31-1/3 Octave bands with 1/3 octave ISO spacing from
20Hz to 20KHz

GEQ 215 — 2 channel, single rack space (1U), 15-2/3 octave bands each channel with 2/3 octave ISO
spacing from 25Hz to 16KHz.

Thanks for selecting NADY AUDIO as your choice in graphic
equalizers.

GEQ 231 — 2 channel, double rack space (2U), 31-1/3 octave bands each channel with 1/3 octave ISO
spacing from 20Hz to 20KHz

FEATURES

Compact and durable all-steel chassis design, the GEQ Series provides optimum audio control for all live and recording applications,
plus ultimate operating convenience and maximum reliability.

• GEQ 131: 1 Channel, Single Rack Space,31 -1/3rd Octave
Bands

• GEQ 215: 2 Channel, Single Rack Space,15 -2/3rd Octave
Bands Each Channel

• GEQ 231: 2 Channel, Double Rack Space, 31 -1/3rd Octave
Bands Each Channel

• Active balanced (XLR and 1/4"TRS) input/output connectors

• Constant Q bandwidth from each filter with 3% center frequency
accuracy

• Parallel filter design for minimal phase distortion

• Ultra low-noise circuitry

• Low-cut filter at 40Hz, 12dB/octave, switchable, with status LED

• Band range: +/- 12dB gain

• Center detents on faders

• Variable input level control (+/-12dB)

• Equalizer ON/OFF bypass switch with status LED

• Gain status LED bargraph with peak LED

• Power switch with integral LED “ON” indicator

• Shielded internal power supply with AC input and selectable line
voltage (~115V/60Hz or ~230V/50Hz)

• Compact and durable all-steel chassis design

TABLE OF CONTENTS

FEATURES ................................................................................. 3

WARNING................................................................................... 4

INSTALLATION .......................................................................... 5

FRONT PANEL CONTROLS & CONNECTIONS ...................... 6

REAR PANEL CONTROLS & CONNECTIONS ........................ 7

TYPICAL SET-UP....................................................................... 8

Sound Reinforcement Applications...................................... 8

Musical Instrument Applications .......................................... 8

Studio Applications .............................................................. 8

SPECIFICATIONS ...................................................................... 9

NOTES ...................................................................................... 10

Date of Purchase ____________________________________

Dealer’s Name ______________________________________

City _______________________________________________

State _____________________ Zip _____________________

Model # ____________________________________________

Serial # ___________________

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WARNING

An equilateral triangle enclosing a lightening flash/arrowhead symbol is
intended to alert the user to the presence of uninsulated “dangerous
voltage” within the product’s enclosure which may be of sufficient

ATTENTION

:

RISQUE DE CHOC ELECTRIQUE NE PAS OUVRIR

magnitude to constitute a risk of electric shock.

An equilateral triangle enclosing an exclamation point is intended to alert
the user to the presence of important operating and service instructions in
the literature enclosed with this unit.

IMPORTANT SAFETY INSTRUCTIONS

When using this electronic device, basic precautions should always be taken, including the following:

1. Read all instructions before using the product.

2. Do not use this product near water (e.g., near a bathtub, washbowl, kitchen sink, in a wet basement, or near a swimming

pool, etc.).

3. This product should be used only with a cart or stand that will keep it level and stable and prevent wobbling.

4. This product, in combination with headphones or speakers, may be capable of producing sound levels that could cause

permanent hearing loss. Do not operate for a long period of time at a high volume level or at a level that is uncomfortable.

If you experience any hearing loss or ringing in the ears, you should consult an audiologist.

5. The product should be positioned so that proper ventilation is maintained.

6. The product should be located away from heat sources such as radiators, heat vents, or other devices

(including amplifiers) that produce heat.

7. The product should be connected to a power supply only of the type described in the operating instructions or as marked on the

product. Replace the fuse only with one of the specified type, size, and correct rating.

8. The power supply cord should: (1) be undamaged, (2) never share an outlet or extension cord with other devices so that the

outlet’s or extension cord’s power rating is exceeded, and (3) never be left plugged into the outlet when not being used for

a long period of time.

9. Care should be taken so that objects do not fall into, and liquids are not spilled through, the enclosure’s openings.

10. The product should be serviced by qualified service personnel if:

A. The power supply cord or the plug has been damaged.

B. Objects have fallen into, or liquid has been spilled onto the product.

C. The product has been exposed to rain.

D. The product does not appear to operate normally or exhibits a marked change in performance.

E. The product has been dropped, or the enclosure damaged.

11. Do not attempt to service the product beyond what is described in the user maintenance instructions. All other servicing should

be referred to qualified service personnel.

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