Crestron C2VEQ-4 User Manual
Crestron C2VEQ-4
Volume/Equalizer Control Expansion Card
Operations & Installation Guide
This document was prepared and written by the Technical Documentation department at:
Crestron Electronics, Inc.
15 Volvo Drive
Rockleigh, NJ 07647
1-888-CRESTRON
All brand names, product names and trademarks are the property of their respective owners.
©2003 Crestron Electronics, Inc.
Crestron C2VEQ-4 Volume/Equalizer Control Expansion Card
Contents
Volume/Equalizer Control Expansion Card: C2VEQ-4 1
Introduction ...............................................................................................................................1
Features and Functions................................................................................................ 1
Specifications ..............................................................................................................3
Physical Description.................................................................................................... 3
Industry Compliance ...................................................................................................5
Installation and Hookup............................................................................................................. 5
Installation................................................................................................................... 5
Hookup........................................................................................................................ 6
Programming Software.............................................................................................................. 7
Digital Audio Tools..................................................................................................... 7
Programming with SIMPL Windows.......................................................................... 8
Problem Solving ......................................................................................................................19
Troubleshooting ........................................................................................................19
Further Inquiries........................................................................................................ 19
Future Updates ..........................................................................................................19
Return and Warranty Policies.................................................................................................. 20
Merchandise Returns / Repair Service ...................................................................... 20
CRESTRON Limited Warranty ................................................................................20
Operations & Installation Guide - DOC. 6136 Contents • i
Crestron C2VEQ-4 Volume/Equalizer Control Expansion Card
Volume/Equalizer Control Expansion Card: C2VEQ-4
Introduction
Features and Functions
The Crestron® C2VEQ-4 Volume/Equalizer Control expansion card is a digitally
controlled 4-channel audio processor that provides volume/tone, mixer and
equalization capabilities for the Crestron PRO2, PAC2, RACK2, or AV2 (with card
cage) 2-Series control systems. The C2VEQ-4 fits in any of the 2-Series control
system’s 40 Mb/s high-speed communications Y-bus slots.
Each channel of the C2VEQ-4 has independent settings for volume, treble, bass,
mute, and mixer controls plus a 12-band parametric equalizer.
Functional Summary
• Four balanced/unbalanced audio I/O channels
• 24-bit 96KHz A/D and D/A converters with dual DSPs provide improved
audio quality
• Independent settings for volume, treble, bass, and mute per channel
• 4 x 4 matrix mixer controls set the percentage of each input desired at each
output
• Five modes of audio equalization per channel
- a ten-band graphic equalizer and two-band parametric equalizer
- a five-band graphic equalizer and seven-band parametric equalizer
- a speech-optimized five-band graphic equalizer and seven-band
parametric equalizer
- a three-band graphic equalizer and nine-band parametric equalizer
- a full twelve-band parametric equalizer
Volume, bass, and treble ramp times, scaling, preset levels, and volume muting may
be specified on a per-channel basis. All of these aspects are software controllable.
Volume, bass, and treble control may be sent to more than one channel via software
to support stereo applications.
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.
Operations & Installation Guide - DOC. 6136 Volume/Equalizer Control Expansion Card: C2VEQ-4 • 1
Volume/Equalizer Control Expansion Card Crestron C2VEQ-4
The treble and bass controls are independent from volume and are individually
controlled for each channel. Each channel includes a muting relay. When the signal
driving Mute1 goes high, the muting circuit is activated providing <-100dBV output
level from any 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.
The 12 filters are identical in function. Each delivers up to 12dB of boost or cut
when using DAT software; from -36dB to +24dB in a SIMPL program. Each filter
also has an adjustable bandwidth control (from .02 octaves to 2 octaves), and a
center frequency control range from 10 Hz to 20 KHz. 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, EQ filter, 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/power-up conditions to the
C2VEQ-4.
C2VEQ-4 Simplified Block Diagram
Line-Level
Audio Input
(Balanced or
Unbalanced)
Ch 1
Ch 2
Ch 3
Ch 4
A/D
A/D
A/D
A/D
4 Input
X
4 Output
Mixer
12 Band
Eq
12 Band
Eq
12 Band
Eq
12 Band
Eq
Volume &
Tone Control
Volume &
Tone Control
Volume &
Tone Control
Volume &
Tone Control
D/A
D/A
D/A
D/A
Mute
Relay
Mute
Relay
Mute
Relay
Mute
Relay
Ch 1
Ch 2
Ch 3
Ch 4
Line-Level
Audio Output
(Balanced or
Unbalanced)
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Crestron C2VEQ-4 Volume/Equalizer Control Expansion Card
Specifications
The following table provides specifications for the C2VEQ-4.
C2VEQ-4 Specifications
SPECIFICATION DETAILS
Power Requirements 8.0 Watts
Control System Update Files
2-Series Control System Update File Version 3.083.CUZ or later
Input Channels (labeled 1 – 4) Two 5-pin mini-connectors: two channels plus ground
Output Channels (labeled 1 – 4) Two 5-pin mini-connectors: two channels plus ground
Volume (per channel) -80dB to +20dB, 0.5dB control step [balanced I/O]
Mute (per channel) > -100dB
Tone (per channel) Bass gain range ±15dB
Frequency response ±0.1dB 20-22kHz
Total harmonic distortion (THD)
+ Noise
S/N ratio >97dB balanced, >95dB unbalanced,
Crosstalk > -90dB 20Hz-22kHz
Common mode rejection > 90dB 20Hz-22kHz
Input level (max.) 4Vrms balanced, 2Vrms single-ended
Input impedance 10K ohms balanced, 5K ohm single ended
Output level 4Vrms balanced, 2Vrms single-ended
Output impedance 200 ohms balanced, 100 ohms single-ended
Environmental temperature 32° to 122°F (0° to 50°C)
Humidity 10% to 90% RH (non-condensing)
Dimensions Height: 0.98 in (2.49 cm)
Weight 3.75 oz (0.105 kg)
1 Crestron 2-Series control systems include the AV2 with CAGE2, PAC2, PRO2, and RACK2.
2 Filenames for 2-Series control system update files have a CUZ extension and can be obtained from
the Downloads | Software Updates section of the Crestron website (www.crestron.com
note after this footnote.
1, 2
per connector.
per connector.
Bass step size 0.5dB
Treble gain range ±15dB
Treble step size 0.5dB
±0.5dB 10Hz-30kHz
<0.008% @1kHz
20 to 22kHz A-weighted
20 to 22kHz A-weighted
Width: 5.00 in (12.70 cm)
Depth: 6.77 in (17.20 cm)
). Refer to
NOTE: Crestron software and any files on the website are for Authorized Crestron
dealers and Crestron Authorized Independent Programmers (CAIP) only. New users
may be required to register to obtain access to certain areas of the site (including the
FTP site).
Physical Description
The C2VEQ-4 is a circuit board fastened to an aluminum faceplate. The card is
manufactured to easily fit in an unoccupied Y-bus slot of a Crestron 2-Series control
system.
Operations & Installation Guide - DOC. 6136 Volume/Equalizer Control Expansion Card: C2VEQ-4 • 3
Volume/Equalizer Control Expansion Card Crestron C2VEQ-4
Four mini connectors provide the interface to four channels of balanced/unbalanced
audio input (IN 1-4) and four channels of balanced/unbalanced audio output (OUT
1-4). Connect the balanced/unbalanced input (IN) ports to the audio output of any
A/V equipment that needs volume, treble, bass, mixer, and/or equalization control;
connect the balanced/unbalanced output (OUT) ports to an amplifier. Each channel
includes a muting relay.
Refer to the following illustrations for a detailed view.
C2VEQ-4 Faceplate
C2VEQ-4: Top, Side & Front Views
6.59 in.
(16.73 cm)
6.77 in.
(17.20 cm)
5.00 in.
(12.70 cm)
0.98 in
(2.49 cm)
NOTE: These diagrams are for illustration purposes only and do not show the exact
location of components on the circuit board.
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Crestron C2VEQ-4 Volume/Equalizer Control Expansion Card
Industry Compliance
As of the date of manufacture, the C2VEQ-4 has been tested and found to comply
with specifications for CE marking and standards per EMC and
Radiocommunications Compliance Labelling (N11785).
NOTE: This device complies with part 15 of the FCC rules. Operation is subject to
the following two conditions: (1) this device may not cause harmful interference,
and (2) this device must accept any interference received, including interference that
may cause undesired operation.
Installation and Hookup
The C2VEQ-4 cards are designed for installation into a dedicated expansion slot on
a 2-Series control system.
The only tools required for installation are a Phillips screwdriver, a grounding strap,
and a grounded workstation.
CAUTION: The C2VEQ-4 and control system contain electro-static discharge
(ESD) sensitive devices. Perform the following procedure while wearing a
grounding strap that is properly grounded and on a grounded workstation to avoid
damaging the C2VEQ-4 and/or the control system.
CAUTION: To prevent stripping of screw heads, threads, or mounting holes, DO
NOT over tighten screws. Tighten only to the specification listed in the individual
step(s).
NOTE: If the C2VEQ-4 is being installed in an AV2, the optional CAGE2 must be
installed before continuing below. For instructions on installing the CAGE2 into an
AV2 control system, refer to the latest revision of the CAGE2 3-Card Expansion
Cage for AV2 Installation Guide (Doc. 5964).
Installation
Follow the instructions below to install the C2VEQ-4 into a 2-Series control system.
1. Disconnect power from the control system.
2. Remove the two screws and blank faceplate from the desired slot in the
control system using a Phillips screwdriver.
3. Align the C2VEQ-4 with the card guides in the open slot and slide the
expansion card into the slot.
4. Firmly press both ends of the C2VEQ-4 faceplate to seat the expansion
card in the control system connector.
5. Hand-tighten the thumbscrews to secure the C2VEQ-4 in position.
6. Reapply power to the control system.
Operations & Installation Guide - DOC. 6136 Volume/Equalizer Control Expansion Card: C2VEQ-4 • 5
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