Intermec GEQ-2231D, GEQ-1231D User Manual

Stereo 31-Band Graphic Equalizer with HC/LC and Limiter

Dual 31-Band Graphic Equalizer with HC/LC and Limiter

GEQ-1231D

GEQ-2231D

GEQ-1231D/GEQ-2231D 31-Band Graphic Equalizer/Limiter

Contents

Welcome ..................................................................................................................................... 3

Unpacking ............................................................................................................................... 4

Warnings .................................................................................................................................. 4

Operation................................................................................................................................. 5

Features ....................................................................................................................................... 6

Front Panel Controls.................................................................................................................... 7

Rear Panel Controls .................................................................................................................. 10

Applications .............................................................................................................................. 12

Block Diagram (GEQ-1231D)................................................................................................... 16

Block Diagram (GEQ-2231D)................................................................................................... 17

Specifications............................................................................................................................ 18

GEQ-1231D/GEQ-2231D 31-Band Graphic Equalizer/Limiter

Welcome

Congratulations on your purchase of the GEQ-1231D/GEQ-2231D, a state-of-the-art digital graphic equalizer with extended frequency range. The GEQ-1231D/GEQ-2231D is the result of a professional collaboration between two audio industry leaders: Inter-M, known for a wide range of high-quality professional audio equipment, and Algorithmix, one of the foremost developers of signal processing and DSP hardware.

Thanks to superior 64kHz Codec technology and ultra-low-noise digital filters, the GEQ1231D/GEQ-2231D delivers warm analog sound with the benefits of a digital feature set. The GEQ-1231D/GEQ-2231D are part of the 3E Tools family of Excellent Sound in an Easyto-use Interface at an Economical price.

A personal welcome to you from the management and employees of Inter-M

All of us here at Inter-M are dedicated to providing you with the highest quality products and the best value.

We sincerely trust this product will provide you with years of satisfactory service, but if anything is not to your complete satisfaction, we will endeavor to make things right.

Welcome to Inter-M, and thank you for becoming a part of our worldwide extended family!

GEQ-1231D/GEQ-2231D 31-Band Graphic Equalizer/Limiter

Unpacking

Although your GEQ-1231D/GEQ-2231D is neither complicated nor difficult to operate, we recommend you take a few minutes to read this brief manual and familiarize yourself with the important information regarding product features, setup and operation.

As with most electronic devices, we strongly recommend you retain the original packaging. In the unlikely event the product must be returned for servicing, the original packaging (or reasonable equivalent) is required.

Warnings

Environment

Never place this product in an environment that could alter its performance or reduce its service life. Such environments are usually characterized by high levels of heat, dust, moisture, or vibration.

Safety

1. Read these instructions carefully.

2. Follow all instructions.

3. Keep all warnings.

4. Do not operate this apparatus near water.

5. Clean only with a damp cloth.

6. Do not block any of the ventilation openings.

7. Install only in accordance with the instructions in this manual.

8. Do not install near any heat sources such as radiators, heat registers, stoves, or other devices (including amplifiers) that produce heat.

9. Do not defeat the safety purpose of the polarized or grounding type plug. A polarized plug has two blades, with one wider than the other. A grounding type plug has two blades and a third grounding prong. The wide blade or the third prong is provided for your safety. If the provided plug does not fit into your outlet, consult an electrician for replacement of the obsolete outlet.

10. Protect the power cord from being walked on or pinched, particularly at plugs, convenience receptacles, and the point where it is attached to the apparatus.

11. Use only the attachments/accessories specified.

GEQ-1231D/GEQ-2231D 31-Band Graphic Equalizer/Limiter

12. Use only with a cart, stand, tripod, bracket, or table specified, or sold with the apparatus. When a cart is used, use caution when moving the cart/apparatus combination to avoid overturning.

13. Unplug this apparatus during lightning storms or when unused for long periods of time.

14. Refer all servicing to qualified service personnel. Servicing is required when the apparatus has been damaged in any way, such as power supply cord or plug is damaged, liquid has been spilled or objects have fallen into the apparatus, the apparatus has been exposed to rain or moisture, does not operate normally, or has been dropped.

Operation

Make certain that speakers and input sources are properly connected before switching on.

Keep volume levels at minimum gain before switching on.

NOTE: The system’s operation is delayed by approximately three seconds after pressing the AC Mains power switch. This is due to the built-in protection circuitry, designed to protect speakers and other system components.

GEQ-1231D/GEQ-2231D 31-Band Graphic Equalizer/Limiter

Features

• Traditional warm analog sound coupled with state-of-the-art digital signal processing

• Balanced XLR & 1/4 TRS inputs and outputs (unbalanced compatible)

• Stereo 31-Band graphic equalizer in a compact 1RU form factor (GEQ-1231D)

• Dual-Channel 31-Band graphic equalizer in a compact 2RU form factor (GEQ-2231D)

• Constant-Q 1/3-Octave low-noise digital filter bank

• 5-LED input signal level display with peak indicator

• Selectable GEQ range: ±12dB, ±6dB and -12dB(cut only)

• High-cut filter for hiss seduction

• Low-cut filter for rumble suppression

• Reliable peak limiter with threshold and 3-LED gain reduction meter

• Permanent stereo channel link

• Soft-clip function

• Output clip indicator

• ON indicators for low-cut, high-cut, and limiter

• Extended frequency response(up to 31.5kHz)

• Hard bypass relays

• High-resolution processing engine: 24-Bit AD/DA converters, 64 kHz sampling

frequency, 40-bit Internal signal path

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