Cresnet 4-Channel Digital Volume Control Crestron C2N-VEQ4
2 • Cresnet 4-Channel Digital Volume Control: C2N-VEQ4 Operations Guide - DOC. 6135A
Input and output connections are completely independent of each other. Therefore, it
is possible to have a balanced input paired with an unbalanced output and vice-versa.
The treble and bass controls are independent from volume and are individually
controlled for each channel. Each channel includes a muting relay with 100 dB
attenuation. When the signal driving Mute1 goes high, the muting circuit is activated
providing 100 dB attenuation from any preset volume level. Likewise, channels “2,”
“3,”and “4” drive Mute2, Mute3, and Mute4, respectively. When the muting signal
goes low, the muting circuit is deactivated and the volume and tone return to their
original preset levels.
NOTE: MuteAll is an override. All channels are muted when this signal is high.
When it is low, the channels follow the state of Mute1, Mute2, Mute3 and Mute4.
Each of the four channels has a twelve-filter parametric equalizer that permits you to
correct for acoustical distortions in the listening area or in the speakers themselves,
and/or to establish preset values that enhance the sound conditions for favorite music
or recording media.
Equalization controls are programmable using Crestron’s Digital Media Tools (DMT)
software or SIMPL Windows (SIMPL). Refer to “Programming Software” on page
13 for details.
The 12 filters are identical in function. Each delivers up to 12 dB of boost or cut
when using DMT software; from -36 dB to +24 dB in a SIMPL program. Each filter
also has an adjustable bandwidth control (from 0.02 octaves to 2 octaves using DMT
software; from 0.02 octaves to 3.5 octaves using SIMPL), and a center frequency
control range (from 25 Hz to 19.9 kHz from DMT; from 5 Hz to 24 kHz using
SIMPL). Use each filter anywhere in the audio spectrum, not just pre-selected ranges
as typically found on graphic equalizers. In addition, you can select from among five
filter types (low pass, high pass, peaking EQ (equalization)/notch, bass shelf, and
treble shelf) or select no filter.
Each channel is equipped with protective relays that turn ON only after safe
conditions are sustained by the electronic circuitry. This feature protects the output
from “pops” caused by accidental power-down/up conditions to the C2N-VEQ4.
If the C2N-VEQ4 is under program control and the power is cycled to the
C2N-VEQ4, it renews the volume, bass, and treble levels to the current program
settings. The mute status (per channel and the mute-all) is also restored.
C2N-VEQ4 Simplified Block Diagram