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Crestron C2VEQ-4 Volume/Equalizer Control Expansion Card

Trim Controls Symbol Input/Output Signals – Analog

NAME VALUE DEFINITION

TrimPreset# 1 to 10 10 user-definable trim presets, each

includes all TrimBands.

TrimBandOut1-1 through

1-10, 2-1 through 2-10,

3-1 through 3-10,

4-1 through 4-10

(40 total)

-100 to

100

-10dB to +10dB

Each analog increment of 1 = 0.1dB.

TrimBandOut1-1 through

1-10_FB, 2-1 through 2-

10_FB, 3-1 through 3-

10_FB, 4-1 through 4-

10_FB (40 total)

-100 to

100

-10dB to +10dB

Each analog increment of 1 = 0.1dB.

Filter Controls – Slot 1, SubSlot 4

In addition to the 10 trim presets, the C2VEQ-4 provides five filter presets, where a

preset is a set of 48 filters. A filter consists of the type, center frequency, gain, and

the ratio of the center frequency to the filter bandwidth (also called Q) for each

channel.

The C2VEQ-4 provides twelve filters for each channel, with five modes of audio

equalization (settable using Digital Audio Tools):

• A ten-band graphic equalizer and a two-band parametric equalizer. In this

mode, the first ten filters in all channels are used to set up the default

frequencies (31.5Hz, 63Hz, 125Hz, 250Hz, 500Hz, 1KHz, 2KHz, 4KHz,

8KHz, and 16KHz) for graphic equalization, leaving filters 11 and 12

available for parametric equalization.

• A five-band graphic equalizer and a seven-band parametric equalizer. In

this mode, the first five filters in all channels are used to set up the default

frequencies (63Hz, 250Hz, 1KHz, and 4KHz, 10KHz) for graphic

equalization, leaving filters 6 through 12 available for parametric

equalization.

• A speech optimized version of the five-band graphic and seven-band

parametric equalizer arrangement utilizing default frequencies (160Hz,

600Hz, 1KHz, and 2.5KHz, 5KHz).

• A three-band graphic equalizer and a nine-band parametric equalizer. Here

the first three filters in all channels are for the default frequencies (250Hz,

1KHz, and 4KHz), leaving filters 4 through 12 available for parametric

equalization in case you want to notch out a 60 Hz hum or other resonant

frequency.

• A full twelve-band parametric equalizer. You may use the equalizer as a

full twelve-band parametric equalizer, however it is recommended that you

first become fully familiar with equalization techniques.

Operations & Installation Guide - DOC. 6136 Volume/Equalizer Control Expansion Card: C2VEQ-4 • 15

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