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Inter-m GEQ-1231D Operating Manual

Stereo 31-band graphic equalizer with hc/lc and limiter, dual 31-band graphic equalizer with hc/lc and limiter
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GEQ-1231D
Stereo 31-Band Graphic Equalizer with HC/LC and Limiter
GEQ-2231D
Dual 31-Band Graphic Equalizer with HC/LC and Limiter
Copyright 2004 Inter-M Corporation

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Summary of Contents for Inter-m GEQ-1231D

  • Page 1 GEQ-1231D Stereo 31-Band Graphic Equalizer with HC/LC and Limiter GEQ-2231D Dual 31-Band Graphic Equalizer with HC/LC and Limiter Copyright 2004 Inter-M Corporation...

  • Page 2: Table Of 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 Contents...

  • Page 3: Welcome

    Thanks to superior 64kHz Codec technology and ultra-low-noise digital filters, the GEQ- 1231D/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 Easy- to-use Interface at an Economical price.

  • Page 4: Unpacking

    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.

  • Page 5: Operation

    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.

  • Page 6: Features

    • 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 •...

  • Page 7: Front Panel Controls

    Each slider covers a maximum cut/boost range of ±12dB or ±6dB, depending on the position of the Range switch (3). In the GEQ-1231D, each slider controls the level of both left and right channels. In the GEQ-2231D, two rows of sliders are provided to allow independent control of both channels.
  • Page 8 For more information on setting up input/output gain structure, see the notes on Unity Gain mode in the DIP Switch Selector section on page 11. In the GEQ-1231D, a single Input Gain Control is provided. In the GEQ-2231D, two independent Range switches are provided.
  • Page 9 LED lights. Rotating the knob to the Off position removes the filter completely from the signal path. The GEQ-1231D has only one low-cut filter control for both channels, while the GEQ-2231D provides independent controls for each channel.

  • Page 10: Rear Panel Controls

    Rear Panel Controls 1. XLR Input Connectors Balanced three-pin XLR connectors. 2. TRS Input Connectors Balanced three-conductor 1/4" TRS connectors. 3. Input Ground Lift Switch In the Lift position this switch is useful in eliminating ground loops and other electrically induced hum from equipment connected to the unit’s inputs. 4.
  • Page 11 The GEQ-1231D/2231D provides another very unique feature, unity-gain mode. In unity-gain mode, output level is always equal to input level (assuming all EQ controls are set flat), allowing for optimal use of the unit’s internal dynamic range.

  • Page 12: Applications

    GEQ-1231D/GEQ-2231D 31-Band Graphic Equalizer/Limiter Applications...
  • Page 13 GEQ-1231D/GEQ-2231D 31-Band Graphic Equalizer/Limiter...
  • Page 14 GEQ-1231D/GEQ-2231D 31-Band Graphic Equalizer/Limiter...
  • Page 15 GEQ-1231D/GEQ-2231D 31-Band Graphic Equalizer/Limiter...

  • Page 16: Block Diagram (Geq-1231D)

    GEQ-1231D/GEQ-2231D 31-Band Graphic Equalizer/Limiter Block Diagram (GEQ-1231D)

  • Page 17: Block Diagram (Geq-2231D)

    GEQ-1231D/GEQ-2231D 31-Band Graphic Equalizer/Limiter Block Diagram (GEQ-2231D)

  • Page 18: Specifications

    < 0.003% 100 –240VAC, 50/60Hz GEQ-1231D: 3.5 Kg (7.7 lbs) GEQ-2231D: 5 Kg (11 lbs) GEQ-1231D: 482(W) x 44(H) x 280(D) mm 19(W) x 1.75(H) x 11(D) in. GEQ-2231D: 482(W) x 88(H) x 280(D) mm 19(W) x 3.5(H) x 11(D) in.
  • Page 19 Korea and China, and sales and marketing operations located in Japan, Europe, and the U.S.A. With more than 850 employees around the globe, Inter-M is well-poised for further growth and expansion.

This manual is also suitable for:

Geq-2231d

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