Integrated System
•Two mic/line inputs and two
line outputs.
•One 9 Watt speaker output.
•May use Power over Ethernet
(PoE) or local power supply.
•Premium 24-bit AD and DA
conversion used throughout.
•Mounting bracket simplifies
•Uses standard Gigabit
Ethernet hardware for audio
transport with dual Ethernet
connections for network
•Q-Sys technical support is available 24/7 – worldwide
Physically located near audio sources and
destinations, the I/O-22 can provide the
points of connection used to interface
Q-Sys with other components of the audio
system. Each I/O-22 offers two mic/line
inputs with phantom power and two line
outputs. One of the outputs can be routed
to an on-board 9-watt power amplifier. In
addition to the audio connections the I/O22 offers redundant RJ45 network ports.
Control of external devices is also available
to a serial port and GPIO for connecting
with other devices. The I/O-22 comes with
an installation bracket that makes it easy to
mount it under a table or in other hidden
Applications – The I/O-22is an ideal
choice for boardrooms, conferencing,
convention centers, entertainment venues,
hospitality, houses of worship, legislative
installations, performing arts, sports bars,
stadiums and arenas, theme parks and
transportation facilities.
Platform – Using a customized Linux OS
and running on Intel™ microprocessors,
the Q-Sys Cores are amazingly powerful.
Because Q-Sys doesn’t depend on proprietary
DSP hardware, it directly benefits from
advancements driven by the entire global
Computing / IT industry, and software
improvements don’t require new hardware.
New capabilities are added on a regular basis.
Visit www.qscaudio.com or contact your QSC
representative for the latest updates.
Network – Q-Sys utilizes our IT-friendly
Layer-3 Gigabit Ethernet implementation.
The audio transport is low-latency (fixed at
2.5 ms from any input to any output) and
based on accepted IP standards. Q-Sys will
operate using a variety of available, off-the
shelf Gigabit switches (see the QSC website
for a list of qualified switches). Because it
is standards based it can easily run on a
shared network without segregating audio
traffic via tedious VLAN configuration.
Design GUI – Q-Sys cores are configured
using an intuitive object-based drag and drop
user interface that provides for the creation
of nearly any imaginable signal flow. Control
logic objects are provided and custom
scripting may also be used to accomplish
a wide range of interface or control tasks.
The design GUI is capable of quickly and
easily generating graphical control screens
that maybe run on network-connected
computers, tablet devices or QSC touchscreen controllers.
Scalable Redundancy – While QSC is
known for and dedicated to building the
most reliable products, some applications
call for additional assurance. Any element
of a Q-Sys system – Cores, networks,
I/O Frames and even amplifiers may be
deployed in a redundant configuration. The
system designer has the choice of making
one or all system elements redundant.
Peripherals – The I/O-22 is one of many
Q-Sys peripherals that are offered to further
enhance the platform. Other devices include
page stations, touch screen controllers and
specialized I/O cards.
Q-Sys is a suite of powerful tools that make
any project’s requirements simple to achieve.
It provides rock-solid performance backed by
the unrivaled service and support QSC has
built its reputation on. For more information
please visit: www.qscaudio.com/products/
I/O-22 | Specifications
System Hardware
System audio input and output device
Panel Controls
Unit ID button momentary switch
Panel Indicators
Power On: Green LED
Device Status: Tri-color LED
Locate / ID: Green LED
Panel Connectors
Mic/Line: 2 x 3-pin Euro style connectors, Orange
Line Out: 2 x 3-pin Euro style connectors, Green
GPIO: 2 x 6-pin (8 signals, 4 ground) Euro style connectors
RS-232: DE-9 (male 9-pin D shell connector)
USB: For future development
Remote Display: For future development
Speaker: 2-pin Female Euro style connectors
Aux Power: 2-pin Euro style connector
Q-Sys Network LAN A: RJ45 1000 MBps only
Q-Sys Network LAN B: RJ45 1000 MBps only
Input Dynamic Range
Unweighted > 88 dB
A-weighted > 91 dB
Input Frequency Response (20 Hz - 20 kHz)
+/- 0.8 dB
Input Impedance
10K Ohms
Max Input Level
+12 dBu gain setting: 30.8mV
-8 dBu gain setting: 1.9V
-28 dBu gain setting: 3.09V
Distortion (20 Hz - 20 kHz)
At max input levels
+12 dBu gain setting: -70 dB or 0.032%
-8 dBu gain setting: -57 or 0.14%
-28 dBu gain setting: -57 or 0.14%
Input Crosstalk (20 Hz - 20 kHz typical)
-78 dB (ch1 to ch2)
Common Mode Rejection (20 Hz - 20 kHz)
-39 dB
Output Dynamic Range
Unweighted > 104 dB
A-weighted > 107 dB
IOutput Frequency Response (20 Hz - 20 kHz)
+ 0.3 dB to -0.5 dB (Line out)
Max Output Level
+10 dBu
Max Speaker Output Power
9W into 4 ohms
Output Crosstalk (20 Hz - 20 kHz typical)
-74 dB (ch1 to ch2)
Line Voltage Requirements
IEEE 802.3af power over Ethernet (PoE) or +24V DC @ 1.5A min
Dimensions (HWD)
1.75” x 8.875” x 5.875” (44.45 mm x 226.5 mm x 149 mm)
1675 MacArthur Boulevard • Costa Mesa, CA 92626 • Ph: 800/854-4079 or 714/957-7100 • Fax: 714/754-6174
please recycle
© 2012 QSC Audio Products, LLC. All rights reserved. QSC and the QSC logo are registered trademarks of QSC Audio Products, LLC in the U.S. Patent and Trademark office and other countries.
Q-Sys is a trademark of QSC. Intel and the Intel logo are registered trademarks of the Intel corporation.
I/O-22 Spec Sheet 05/9/12
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