Biamp Cambridge Qt X Original operating instructions

A: 9300 S.W. Gemini Drive Beaverton, OR 97008 USA W: www.biamp.com
PRODUCT DESCRIPTION
Biamp’s Cambridge Qt®X Series is a complete, all-in-one sound masking
solution that delivers the flexibility, reliability, and ease of installation that
integrators desire. It is engineered to incorporate direct-field technologies,
making the Qt X ideally suited for office environments. Qt X is easily interfaced
with a building’s life-safety system out of the box, ensuring proper coordination
during emergencies.
All models of the Qt X control modules include a sound masking generator,
controller, third octave band equalizer and amplifier with two analog audio inputs.
This allows for distribution of audio from paging controllers and/or (background)
music players, one digital media input (RJ45 Ethernet port), and 3 or 6 analog
output channels (depending on the Qt X model) to connect to sound masking
emitters or speakers.
Qt X 300 and Qt X 600: Use direct field devices (Qt Standard or Active Emitters).
The emitters point downward above the listener's head for direct, unimpeded
audio signal. The Qt X 300 control module is a compact three-output controller
suitable for installations of up to 36,000 square feet (3,345 m2). The Qt X 600
control module is identical in features and functions yet supports six outputs of
sound masking and audio installations of up to 72,000 square feet (6,689 m²).
Outputs can be assigned to a zone and then the zones are adjusted for masking
and audio levels and spectra. Qt X 300/600 models have "preset" optimized
sound masking spectra for use with Qt Emitters. Additional configuration is
available from a web-based control interface or from a remote desktop leveraging
the unit’s network connectivity with the Qt X software.
The "D" models of each controller (Qt X 300D/600D) will be available in a future
release. They support Dante®audio stream inputs and are AES67 compatible.
The Qt X web-based management software provides an intuitive interface
for setup and programming of a Qt X sound masking system. For information
related to this software interface, see Qt X Web help.
Unless otherwise noted, all installation, set up and use instructions apply to the
Qt X family of control modules (Qt X 300 and Qt X 600).
Cambridge
Qt®X Sound Masking System
Installation & Operation Guide
FEATURES
• 3 or 6 outputs of sound masking coverage depending upon the model
• Wall, rack mount and plenum options
• Web-based control interface
• Compatible with active and passive Qt®Pro emitters
• Qt X is easily interfaced with a building’s life-safety system out of the box
• "D" models (Qt X 300D/600D) will support distribution of Dante®, AES67,
and AVB (enabled in future firmware release)
Models
Qt®X 300, Qt®X 300D
Qt®X 600, Qt®X 600D
(D) Dante®versions available
in a future release
Connecting people through extraordinary audiovisual experiences™

page 2 Installation and Operation Guide Qt X Sound Masking System
CONTENTS
This manual is divided into sections with installation instructions for each control
module and basics regarding the sound masking devices connected to each.
IMPORTANT SAFETY INFORMATION
Install the controller away from heat sources, such as vents, radiators, and heat
registers. Avoid installing near water. Do not exceed the maximum ambient
operating temperature of 40-90° F (4-32° C).
If the Qt X controller is installed in a rack, the following must be observed:
• Care must be taken to ensure temperature and air flow is sufficient to
allow the unit to operate safely and not exceed the maximum operating
temperature stated above. The controllers must be mounted to the rack in
a safe and stable manner to prevent any potential for tipping or structural
failure.
• Electrical connections to the equipment must be sufficient to prevent any
circuit overloading and reliable grounding of the supply circuits shall be
maintained.
The controllers are UL 2043 approved for installation into a plenum space.
DANGER: The AC/DC power supply provided with this product has not
been evaluated to UL 2043 and must not be installed in a plenum space.
(International [multiple language] versions of this statement are <here>)
Product Description ...........................................................................1
Features ............................................................................................1
Contents ............................................................................................2
Important Safety Information .............................................................2
Before You Start ................................................................................2
System Installation Checklist.............................................................3
Qt X 300 & Qt X 600..........................................................................5
Wiring & Connections........................................................................7
Emitter Installation (Qt X 300/600 models)......................................13
Interacting with a Qt X system.........................................................19
Commission the System (next steps)..............................................22
Commission the System (continued)...............................................23
Accessories .....................................................................................24
Qt X System Information Worksheet ...............................................29
BEFORE YOU START
It is very important to understand the basics of sound masking before installing
a system. Sound masking is the addition of a specifically tailored (frequency)
signal which is added to a listener’s environment to increase speech privacy.
In open offices, the addition of sound masking decreases the distance where
unwanted conversations can be clearly understood, thus reducing the distraction
of those distant conversations. This is accomplished by reducing the talker’s
signal-to-noise ratio as experienced by the listener. (i.e. covering the talker’s
speech with a masking signal at the listener's location).
Sound masking signals (produced by emitters and loudspeakers) are placed
where potential unwanted listeners are present. Placing masking only near a
talker has no effect. In the case of enclosed spaces, it is typical to place sound
masking both inside and outside an enclosed space to maintain speech privacy.
Sound masking signals placed outside of the enclosed space prohibit in-room
conversations from being overheard by people passing near the space. Placing
sound masking inside a room helps to promote speech privacy by “protecting”
conversations taking place in adjoining spaces (such as private offices).
There are several items that you need to know and have in place prior to installing
a Qt X sound masking system:
• Network connectivity - Make Cat 6 cabling runs to all controller locations -
1-2 per controller. (2nd cable would be for future networking capability)
• For installation of Qt X 300/600 systems, an understanding of how runs to
the standard and active emitters are laid out to prevent signal interference
- see explanations in the emitter wiring and layout section (pgs 13-18)
• Familiarity with basic network installation best practices
• You should have the design plan / layout from the Biamp Design Team
noting device, output and zone locations. This will allow you to plan the
cabling runs and controller locations.
Reach the Design Team here: https://cambridgesound.com/quote/

Qt X Sound Masking System Installation and Operation Guide page 3
SYSTEM INSTALLATION CHECKLIST
Suggested order of operations for installation & commissioning a typical
sound masking system.
Mount, Install and Cable all components
Power & test emitters
Define emitter type per output (must be connected to the
controller via Qt X web interface)
Adjust Zone on front panel to a low but audible level
as necessary
Walk emitter locations to verify sound masking signal is
present at each
Attach peripherals (paging, audio sources, life safety panel…)
Verify proper operation of each source and contact closures
Configure the system
Configure controller's IP Address
[Network Operation Mode (single / dual network cable)]*
Update firmware for each controller
Create zones as required
Assign controller outputs to zones
Create music paging Audio Sources and assign to Zones
(ensure emitter type in use supports audio sources)
Define behaviors of input and outputs
Set zone sound masking levels (42dBA SPL to 48dBA SPL)
using a calibrated sound pressure meter. Measure at 4ft. (1.2m)
above the finished floor.
Adjust masking spectrum equalizer for each output as necessary
to meet project requirements. Qt X 300/600 models have
preconfigured spectrums,
Set system security / user levels and document passwords
Go through each zone testing / adjusting levels, checking behavior
Set Audio Source levels
Capture final sound masking spectrum and sound pressure level
measurements for reporting if required
Set soft start, schedules, etc., as necessary
Save system configuration using the "Download Configuration"
button in the System Info tab (System Settings)
* Items in brackets with an asterisk '*' will be included in future rmware releases

page 4 Installation and Operation Guide Qt X Sound Masking System
Cable Cabling Type Qt Passive emitter
(Max Distance from Qt X)
Qt Active Emitter
(Max Distance from Qt X)
Signal Cable
Cat 3, 5, 5e, 6 - 4-pair (8-conductor)
24 AWG Solid CMP
(EIA/TIA 568B standard termination)
1000 ft (304.8 m) from Controller
to last emitter
**1000 ft (304.8 m) from Controller to last
emitter of the longest pathway
(including the powered signal cable length)
Powered
Signal Cable
Cat 3, 5, 5e, 6 - 4-pair (8-conductor)
24 AWG Solid CMP
(EIA/TIA 568B standard termination)
—400 ft (121.9 m)
from Injector Output to last Active Emitter
Power Cable 14 AWG,
2-conductor Stranded CMP —400 ft (121.9 m) from Power Supply to Injector Input
Maximum Number
of Standard or Active
Emitters
(Qt X 300/600)
—Qty 60 per Output run (A or B)
Qty 120 per Output total (A+B)
Qty 25 per Injector Output
Qty 50 per Injector
Qty 100 per paired (A/B) outputs - requires
2 Injectors
** Signal Length = 1000 ft (304.8m) Longest "Powered Signal" length
Installation Considerations
Qt X 300/600 systems
• Output runs must have the same device type (Standard or Active Emitters)
and will share the same sound masking settings. The cabling runs must
be configured to prevent any signal interference among the 4 channels
along the layout. (Refer to illustrations pages 16-17).
• Differences in ceiling height of more than 6" (152mm) need to be
connected as separate outputs because sound masking levels will be
different.
• Each output's sound masking levels can be individually controlled and
then assigned to networked zones with additional controls applied to the
whole zone.

Qt X Sound Masking System Installation and Operation Guide page 5
4-Pin Logic I/O - 2 ports
Two triggers for zone muting or indication for paging application.
6. 4-Pin Contact Closure - 2 inputs
This contact closure is provided in order to mute audio or sound masking in the
zone or system in the event of a fire emergency or request to page. These inputs
should be connected to the fire alarm panel (port 1) or paging system (port 2 -
configured as Push-to-Talk).
7. 4-Pin Privacy Light Output - 2 outputs
The privacy lights ports enable connections to (2) privacy lights panels which
indicate when sound masking is enabled in a certain zone. Each can be assigned
to a different zone when configuring the system in the web interface.
8. 3-Pin MIC/Line Audio Inputs - 2 inputs
Two MIC/line audio inputs may be connected to an external audio source such
as a music player or an external paging controller. This allows distribution of
networked audio throughout the configured zones.
9. Outputs
The Qt X 300 supports three outputs of sound masking and audio while the
Qt X 600 has six outputs. Emitter connections are made via CAT5e cable from
the output RJ45 connectors (6 and 12 RJ45 connectors respectively). Each
output can accommodate two cable runs (A&B) that can carry up to half of the
emitter total for the output. Both A&B runs on a single output must share the
same type of emitter (either Standard or Active). Both runs on an output are
matched in all settings and are detailed on pages 16 -18.
1. LCD Display
The LCD display indicates system statuses and parameters. Users may navigate
through the display to view the current IP address and network mask of the
device, view current operating mode of the device (unconfigured, configured,
updating firmware, etc.) and view any faults present.
2. Function/Navigation Buttons
Function/navigation buttons allow navigating through information provided in the
LCD display.
3. Factory Reset
Insert pin to depress the switch, press and hold for 10 seconds. This will return
the unit to factory settings, cause all configuration to be cleared and the device
to reboot.
WARNING: Doing this will take the device back to its uncongured state and
delete any associated input / output device settings from local memory.
4. Power Connector
Connection for an external (included) 24V 90W power supply.
IMPORTANT: Always plug / unplug the power supply at the wall outlet.
5. Network Control / Media Ports - 2 ports*
RJ45 Gigabit Ethernet port connectors that support AVB and Dante media
streams (Dante and AES67 supported on the 300D/600D models only). In dual
cable mode the left one (#1) the default media port, but in single cable mode it
can be both control and media. The right (#2) port is the default control port in
dual cable mode. Port 2 is disabled in single cable mode.
2
1
QT X 300 & QT X 600
Figure 1. Qt X 300 or Qt X 600 Front Panel
4
7
6
3
9
5
8
Figure 2. Qt X 300 or Qt X 600 Rear Panel
10
(Qt X 600 panel shown)
* Items with an asterisk '*' will be included in future rmware releases

page 6 Installation and Operation Guide Qt X Sound Masking System
Installation
The Qt X 300 and Qt X 600 may be installed on a wall with the included hardware.
An optional Rack Mount accessory kit is available to install the unit in a rack
(Instructions can be found on pages 25-26).
NOTE: It is up to the installer to determine the safest, most secure means of installing
the Qt X on to a wall or other vertical surface. Consult any local building/safety codes as
required.
NOTE: Equipment installation should be planned such that audio and network sources are
in place prior to Qt X and emitter installation. Emitters should be tested upon installation
with sound masking audio active to ensure proper functionality.
Wall-mount installations:
1. Place the wall mount where it is to be mounted and mark the hole locations.
The control module hinges forward for wall mounting and cable installation.
To hinge forward, loosen the screws on both sides, lift it up to disengage the
top screws, and rotate forward as shown (Figure 3).
IMPORTANT: If using the wall mount bracket as a template to drill into the wall,
remove the bracket from the Qt X prior to drilling to avoid getting debris in the
Qt X connectors and ports.
2. If installing into drywall/sheet rock, drill the mounting holes with a 1/4" drill bit,
and insert plastic mounting anchors into the drywall/sheet rock.
3. Install the screws into the plastic anchors leaving enough room for the bracket
to be hung on the screw heads. Place the bracket so the screw heads t
into the keyholes and then move the bracket down to capture the screws.
Tighten the screws to secure the bracket to the wall.
NOTE: If the Qt X was removed from the wall bracket, reinstall the screws
that secure it to the wall bracket. The controller can be rotated down to
make it easier to tighten the mounting screws.
4. Connect all wiring/cabling as described in Wiring & Connections. Rotate the
Qt X up and move down into the operating position to lock into place. Tighten
the side screws to secure it to the bracket. See Figure 4.
Loosen Screws
Figure 3. Mount unit / wall bracket
Figure 4. Controller in operating position
plug power
cord into
power supply

Qt X Sound Masking System Installation and Operation Guide page 7
WIRING & CONNECTIONS
Wiring / Cabling
Qt X 300/600: Cabling for Active and Passive emitters is included in designated
lengths (16, 22 or 30 feet) dependent upon emitter bundle ordered. Sort the
cables by length and label by output and run for installation ease. If you need to
make a custom length cable, please note the following:
• Use solid conductor 24 AWG CAT-3, 5, 5e, 6, or 7 cable that meets local code
requirements.
• If the system is installed in a return air plenum, the cable must be plenum rated.
• Shielding is not required. Unshielded twisted pair (UTP) cable is acceptable.
• Snagless boots are not required.
• RJ-45 plugs must use the “bent 3-tine” RJ-45
plugs intended for use with solid core CAT
wire. Three-tine plugs can be purchased at
a hardware store and from most CAT cable
suppliers. DO NOT USE the “aligned two-tine”
type intended for stranded wire, as they provide
improper contact and may yield intermittent
system operation. The diagram below shows
the cross section view of both types.
• Field test each cable after fabrication with the RJ-45 connectors (before final
installation), with a standard network LAN tester to check for continuity, shorts, and
1:1 (straight through) connection before installation.
• Factory Cables are terminated using EIA/TIA568B standard pinout.
Panel Connections
Network Ports
All Qt X controllers are equipped with two
RJ45 network ports for Media and Control.
All Qt X controllers can be configured to use
single or *dual cable modes. Single cable
mode is the default with all information
carried on Port 1.
Network Ports (continued)
Single Cable Mode: Control network and Media network are combined using
the same network infrastructure. Both Media and Control information share the
same switch port. In this mode the #2 port is disabled.
*Dual Cable Mode: Control network and Media network traffic are on different
networks - Control from an enterprise network for management; Media is
physically on a separate network. More information about AVB & Dante switch
requirements can be found in our Cornerstone Knowledge Base <here>.
Correct
RJ-45 Connector
with bent type
Incorrect
RJ-45 Connector
with aligned type
* Items with an asterisk '*' will be included in future rmware releases

page 8 Installation and Operation Guide Qt X Sound Masking System
Panel Connections (continued))
Contact Closures
The Qt X provides a mute capability for masking and/or audio. #1 position is
configured for Fire or Emergency panel input. The contact closure utilizes the
same style green euroblock connector as the privacy lights and GPIO (4-pin).
See Figure 5.
• To instantly mute sound masking, connect a two-conductor cable to the two contact
closure connectors, labeled (1-Gnd).
• To use this feature with audio, configured as Push-to-Talk (Input 2 only), connect a
two-conductor cable to the two connectors, labeled (2-Gnd).
The opposite end of the above-described connections (treated as pairs/circuits)
are terminated at a closure mechanism:
• To disable sound masking, the circuit should be "closed".
• To resume sound masking, the circuit should be "open".
Figure 5. Contact closure connection / wiring

Qt X Sound Masking System Installation and Operation Guide page 9
Panel Connections (continued)
GPIO (General Purpose Input Outputs)
The logic port connections can be configured as either an input or output trigger
in either "Active Low" or "Active High" states. This is useful for applications
where events may be triggered to offer functionality inside Qt X (as an Input) or
indicate a condition within Qt X (as an Output). Unchecking the "Active Low" box
results in an "Active High" state. See Figure 6.
NOTE: The top socket labeled +5V is reserved for future use.
Input / Mute Function: By connecting to a contact in an "Active Low" state,
the selected zones will mute all sound masking, background music, and paging
sources - effectively muting all sound from selected zones upon a contact closure
(closed). Changing the state to "Active High" will mute all sources of the zones
when the contact is open.
Input / Push-to-Talk (PTT) Function: When an incoming contact is closed
("Active Low") the audio source shown will be sent to all zones selected under
the Zone Name dialog. This results in background music muted in the selected
zones and the audio source chosen to be adjustable on the Zone Paging Level
control. Changing the state to "Active High" will route the selected audio source
to the selected zone(s) when the contact is open.
Output / Mute: Provides indication of a GPIO Input Mute condition present on a
specific zone. When in "Active High" state a mute initiated by the GPIO input on
any of the selected zone(s) will result in +5VDC being present across Pin 1 or 2
(dependent on IO Output port) and GND. Switching the output to "Active Low"
indicates the selected zone is unmuted.
Output / Talk Now: Provides indication of the state of the Push-to-Talk (Contact
Input #2) or any available IO port configured as an Input Push-to-Talk. Selection
of associated port is done by selecting from the Page Control drop down. This
functionality is useful to indicate that a person can now speak into an active
microphone by illuminating an LED (+5 VDC) when a specific Push-to-Talk
contact is active. Connect Pin 1 or 2 (dependent on IO Output Port) and GND
Pin in an "Active High" state and the LED will illuminate when the associated
Push-to-Talk input is active. Selecting the "Active Low" checkbox will provide
+5VDC voltage to the "Talk Now" output port when the associated Push-to-Talk
input is inactive, indicating a paging microphone is in a ready condition.
WARNING: Mute functionality should only be used in situations where it is
permissible to disable a zone in very select instances. (i.e. a conference room
with audio conferencing technology) It is never acceptable to mute sound
masking in areas when building occupants might be present.
IMPORTANT: Note conductor designations for
this connector
(Behavior is assigned in the software or web UI)
Figure 6. GPIO connection / wiring
Contact CLOSED -
All sound is muted in
designated zone(s)
Contact CLOSED -
Selected audio source
sent to designated
zone(s) - mutes sound in
those zone(s)
Sends +5V indicating
UNMUTED to designated
zone(s)
Sends +5V when
Push-to-Talk is inactive
Contact OPEN -
All sound is muted in
designated zone(s)
Contact OPEN -
Selected audio source
routed to designated
zone(s) - mutes sound
in those zone(s)
Sends +5V indicating
MUTE to designated
zone(s)
Will also indicate
Emerg. Contact muting
Sends +5V when
Push-to-Talk is active

page 10 Installation and Operation Guide Qt X Sound Masking System
Figure 8. Typical privacy light panel connection
Panel Connections (continued)
Privacy Lights Outputs
Two ports are provided to interface with privacy lights panels. They may be
designated to 2 different zones and should be home run from the controller to
the privacy panel. See Figures 7-8.
5 VDC outputs are available to indicate sound masking is active on a specific
zone as indicated by privacy lights. The functionality is as follows;
Privacy 1 - Connect the positive lead of a privacy sign to Pin 1 and GND (observe
polarity). Select a zone in the Zone Name dialog to associate the Privacy light to
a specific sound masking zone. When the zone is active (above -20dB in level)
the privacy light will illuminate.
Privacy 2 – Same behavior as indicated above with privacy sign connections to
Pin 2 and GND.
Figure 7. Privacy lights connection / wiring
Contact Connections (source)
Follow the instructions provided with the privacy sign to make sure that the unit
is connected to the controller inputs correctly.
+ –
SPEECH PRIVACY PROTECTIONSPEECH PRIVACY PROTECTION
Next Generation Sound MaskingNext Generation Sound Masking

Qt X Sound Masking System Installation and Operation Guide page 11
Panel connections (continued)
Inputs - Paging and Music
Paging and music sources may be connected to the Qt X audio inputs for
distribution throughout select zones. Specific instruction on settings levels in
different zones is covered in the Qt X Web UI help files.
The steps that follow give instructions on connecting paging and audio to the
Qt X.
For balanced audio inputs:
1. Disconnect power from the Qt X.
2. For balanced audio inputs, connect signal wires to the positive (+) and
negative (-) terminals at either of the MIC/Line inputs. Connect the shield to
GND at the audio source, as shown in Figure 9-1, below.
Figure 9 (1-2). Input connections / wiring
(Qt X 600 panel shown) Figure 10.Typical source connections
For unbalanced audio inputs:
1. Disconnect power from the Qt X.
2. For mono unbalanced line level signals connect the positive (+) and negative
(-) terminals. Place a short jumper wire between negative (-) and GND
terminals as shown in Figure 9-2, below.
3. For stereo line level signals, utilize a stereo to balanced converter (Radio
Design Labs TX-J2 or equivalent). Connect Balanced output of converter as
described in note 2 above.
Paging and Music Connections (source)
Follow the instructions provided with the device to make sure that the unit is
connected to the controller inputs correctly. See Figure 10.
Qt X Logic I/O configuration:
MicPAT-D: configured as an Input, Push-to-Talk, Active Low, Input Gain Set to
+48dB, Phantom Power OFF
MicPAT-2: configured as Inputs, Push-to-Talk, Active Low, Input Gain Set to
+48dB, Phantom Power OFF
NPX: Connection and configuration supported in a future firmware release.
2
1
MICPAT-2
NPX G110 0
Wire MicPAT-D MicPAT-2
White Audio + Audio +
Red Audio – Audio –
Black Contact
Gnd
Button 1
Contact
Yellow Contact Contact Gnd
Blue Button 2
Contact
Green
Orange
Shield Audio Gnd Audio Gnd

page 12 Installation and Operation Guide Qt X Sound Masking System
Outputs - Sound masking devices
Emitters - Qt X 300/600 models
The Qt X control modules support installation of both Qt Standard and Active
emitters. Both emitter types are 'direct field' devices, mounted downward for
direct unimpeded transfer of the audio signal to the listening location (Figure 11).
Qt Passive emitter
The passive emitter is a passive audio loudspeaker device suitable for sound
masking applications. This emitter receives an amplified signal directly from the
Qt X control module via a UTP category cabling infrastructure. Maximum sound
pressure levels with this type of emitter are 60dBA at 1 meter with a sound
masking frequency response of 200Hz to 6.3kHz.
Qt Active Emitter
The active emitter is a self-powered audio loudspeaker device suitable for
sound masking and paging/background music. This emitter contains an internal
amplifier which receives the audio signal directly from the Qt X in addition to a
direct current voltage which powers the active emitter. Both power supply(s)
and power injectors are required for operation in addition to the Qt X. Maximum
sound pressure levels with this type of emitter are 65dBA @ 1 meter with a
sound masking frequency response of 125Hz to 8kHz. Maximum sound pressure
levels for paging and background music are 74dBA @ 1 meter with a frequency
response of 105Hz to 16kHz.
Qt Passive emitter
Qt Active Emitter
Figure 11. Emitters for use with Qt X 300/600 controllers

Qt X Sound Masking System Installation and Operation Guide page 13
EMITTER INSTALLATION (Qt X 300/600 models)
Each cable run has a maximum length of 1000 ft (305m).
The tables that follow give the number of emitters that may be installed in a given
cable run, output, etc. per Qt X device. Each output has two identical runs (A and
B). The emitters in both output runs are controlled equally and must be of the
same emitter type.
Qt X 300 - Emitter Installation Totals
Emitter Type Per Cable Run Per Output Total (3 Outputs)*
Standard 60 120 360
Active 50 100 300
Qt X 600 - Emitter Installation Totals
Emitter Type Per Cable Run Per Output Total (6 Outputs)*
Standard 60 120 720
Active 50 100 600
* Output total assumes the same emitter type in each output. Total emitter counts
will vary per device if both standard and active emitters are present in a system.
NOTE: for open ceilings or other installations that do not secure to a tile, other mounting
options are available (such as hanging pendants). See Biamp's product o󰀨erings for
information.
NOTE: Active and passive emitters are installed identically. On the passive emitters, the
input and output ports are labeled as such: INPUT, OUTPUT.
On the active emitters, the input is labeled and the output as . The input
can be located by identifying the jack nearest the seismic keyhole on the rear
of the emitter
It is critically important that the emitters are wired / located following the layout
and wiring diagram from the Design Team to prevent any signal interference. In
addition, please review the general emitter placement and wiring information on
pages 14-18.
NOTE: For Active Emitters, a Qt Power Injector (purchased separately) will need to be
installed directly adjacent to the rst emitter. Each output on the power injector can power
up to 25 Active Emitters (up to 50 for each cable run). A Qt Power Supply (also purchased
separately) is necessary to power the injectors and can power up to six (6) Qt power
injectors (Figures 16-17).
1. Determine emitter installation locations based on
the system plan provided by the Design Team.
Run cables from the controller to the rst emitter
location for each run per output (Figure 15). Label
the cabling such that the location of the run is easily
identiable at the point of connection
to the Qt X. For example: Output 1A
- main o󰀩ce, Output 2A - Lobby, etc.
2. Ceiling tile mounting - use an
appropriate tool and drill a 2.5"
(64mm) size hole in the center of
the appropriate ceiling tiles. Cut from
the front of the tile. A hole saw bit is
included with Qt X 300/600 models.
Other mounting options are available
for open and structural ceilings. They include: Beam Brackets, Pendant
Mounts, Drywall Mounts, New Construction Brackets, Plenum Back cans,
and Universal Brackets.
3. Power on the Qt X controller and set the standard
sound masking level to 0 dB for the desired output
# and associated zone.
4. Install the rst emitter in the ceiling tile by
pushing the emitter through the front of the hole in
tile and securing it with the locking ring. Connect
the cable run from the Qt X output RJ45 connector
to the INPUT connector of the rst emitter (Figure 16). The input jack has the
rounded tab above it and can help if you can't see it easily.
Tile Front
Figure 12. Emitter runs from the Qt X 300/600 controllers
(Qt X 600 panel shown)

page 14 Installation and Operation Guide Qt X Sound Masking System
Cable In
from Controller or
previous Emitter
Cable Out to
next emitter
in the Run
Figure 13. Correctly Wire Emitters
5. Listen to the emitter after it is connected. It should produce a 'whooshing'
sound. If it does not produce sound refer to the troubleshooting steps at right.
6. Connect a cable to the output of the installed emitter (Figure 13) and run that
cable to the next emitter location. Install the next emitter in the run. Connect
that output cable to the input port of the newly installed emitter and repeat
Step 5, above.
7. Repeat Step 5 and 6 until all emitters are installed. Secure cabling as needed
and per any local building codes. A safety cable may be attached to the small
keyhole above the input jack.
NOTE: Do not continue with cabling/emitter installation if the emitter fails to
emit sound.
IMPORTANT: Never swap (reverse) the In/Out jacks when installing emitters as
it could result in an overload condition which forces a controller error condition.
Emitter Spacing Guidelines
• Maintain a square or rectangular pattern with distances/spacing based on
ceiling or mounting height.
• Maintain a 2 ft (.6 m) minimum distance from any sound-reflecting surface.
• Maximum distance from a sound reflective surface is the emitter spacing
distance divided by two.
• Emitters may be moved up to 2 ft (.6 m) outside of the spacing guidelines
to avoid obstacles.
• Refer to the System Plan provided by the Design Team for general zone
and emitter placement.
If emitters fail to produce sound, try the following troubleshooting steps:
• Try a different emitter.
• Test the four (4) previous cables in the run for continuity and shorts.
Repair or replace faulty cabling.
• If a short is present, circuit protection will engage and all sound masking
will shut off. If the short is properly repaired, the protection state should
clear itself in 5-6 minutes.
Emitter Installation (continued)
Numbers of Emitters in a Small Enclosed Area
Enclosed Area
Sq Feet (m2)
Number
of Emitters
Recommended
Layout
up to 180 ft2
(16.7 m2)
2
181 - 260 ft2
(16.8 - 24.2 m2)
3
261 - 340 ft2
(24.2 - 31.6 m2)
4
341 - 420 ft2
(31.7 - 39.0 m2)
5
4210 - 500 ft2
(39.1 - 46.4 m2)
6
More than
500' (46.4 m2)
Use large area / open ofce
guidelines
8. Set sound masking volume levels for each zone, using either the front
panel controls, the web control interface or QtX software. Set sound levels
according to suggested sound masking levels on page 23. If a small area
within a zone exhibits a perceived volume louder than the rest of the zone,
due to a di󰀨erence in acoustics, use the adjustable dip switch on the back of
each related emitter to turn the volume down (by 3, 6, or 9 dB on the passive
emitters, or 1.5, 3 or 4.5 dB on the active emitters from the value set at the
controller). See emitter data sheet for more details.
IMPORTANT: When using Active emitters, it is necessary to select "Active"
speaker type in the "Output tab" by connecting to the controller with either the
Qt X software or web UI. It is not assignable from the front panel. Passive emitters
are the default output type and Active emitters employ a di󰀨erent sound masking
spectrum. If the emitter type isn't changed to Active, the installer may not be able to
properly adjust the output levels for proper masking performance

Qt X Sound Masking System Installation and Operation Guide page 15
Emitter
Mounting Height*
Emitter Spacing -
2'x2' ACT, Open or
Solid-Surface
Ceilings
Emitter Spacing -
2'x4' ACT Ceilings
Min
Distance
from
Wall or
Obstacle
Max
Distance
from
Wall or
Obstacle
< 8' – 9' (2.4 – 2.8 m) 8' x 8' (2.4 x 2.4 m) 8' x 8' (2.4 x 2.4 m) 2' ( .6 m) 4' (1.2 m)
9' – 10' (2..8 – 3.1 m) 10' x 10' ( 3.1 x 3.1 m) 10' x 8' ( 3.1 x 2.4m) 2' ( .6 m) 5' (1.5 m)
10' – 11' (3.1 – 3.4 m) 10' x 10' ( 3.1 x 3.1 m) 10' x 8' ( 3.1 x 2.4m) 2' ( .6 m) 5' (1.5 m)
11' – 12' (3.4 – 3.7 m) 12' x 12'( 3.7 x 3.7 m) 12' x 12' ( 3.7 x 3.7 m) 2' ( .6 m) 6' (1.8 m)
12' – 14' (3.7 – 4.3 m) 12' x 12' ( 3.7 x 3.7 m) 12' x 12' ( 3.7 x 3.7 m) 2' ( .6 m) 6' (1.8 m)
14' + (4.3 m+) Contact Biamp Support Contact Biamp Support 2' ( .6 m) 7' (2.1 m)
*Mounting height may not always be at the ceiling height
Standard and Active Emitter Spacing
Emitter Installation (continued)
Layouts may be adjusted by up to 2 ft (.6m) in small rooms with ceiling tiles to
avoid placement close to obstacles or walls. We suggest that the distance be
decreased rather than increased to maintain adequate coverage. See Figures
14-15.
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Figure 14. Standard Layout with 2'x2' ceiling tiles with an
adjustment for the room size.
Figure 15. 10' x 8' room layout with 2'x4' ceiling tiles
Telephone Rooms/Exam Rooms/Mothers Rooms Emitter Spacing
It is permissible to install a single emitter in very small spaces to gain privacy
where the duration of occupancy is limited and specific installation conditions can
be met. Such spaces include dedicated Telephone Rooms in office environments
or Exam Rooms in a clinic environment. A single emitter is acceptable means of
coverage if the following statements are true:
• Occupancy is typically less than 1 hour per visit.
• The area of room is less than or equal to the room size below based on
ceiling heights.
• A dedicated zone is used for a use similar to a single-emitter room, which
allows for adequate adjustment.
Emitter
Mounting Height* Maximum Room Size Sound Masking Exposure Duration
Use of a
Single Emitter
8' – 9' (2.4 – 2.8 m) < 64 ft2(5.9 m2) Less than 1 hour OK
9' – 11' (2..8 – 3.4 m) < 100 ft2(9.3 m2) Less than 1 hour OK
11' – 14' (3.4 – 4.3 m) <144 ft2(13.4 m2) Less than 1 hour OK
over 14' (4.3 m) Call Biamp Support Less than 1 hour OK
In cases where the time duration of exposure, the room size exceeds the
recommended ceiling height, or the emitter location is offset due to ceiling
conflicts, refer to the chart on the previous page (Emitters in a Small Enclosed
Area) for multiple emitter placement.

page 16 Installation and Operation Guide Qt X Sound Masking System
Figure 16. Passive emitter runs and channel designations
Figure 18. Active emitter maximum cable lengths
Figure 17. Active emitter runs and channel designations
Passive emitter Outputs
Active Emitter Outputs
Active Emitter - Maximum cable lengths
Powered Signal Cable ≤ 400 ft (121.9m)
Signal Cable (to Injector)≤ 600 ft (182.9m)
Power Cable ≤ 400 ft (121.9m)
Emitter Installation (continued)
Basics of Qt X 300/600 outputs: maximum signal run, channel definitions, output
run architecture and spacing in small rooms per ceiling height. See Figures 16-18.
Channel Designations per Run
Output X - Run A - A,B,C,D,A,B,C,D,A,B,C,D...
- Run B - C,D,A,B,C,D,A,B,C,D,A,B...
Maximum Signal cable distance ≤ 1000 ft (304.8m)
Qt Passive emitters
Room Control (QT-RC3 - Accessory option)
VERY IMPORTANT: Use of the Qt-RC3 room control is ONLY recommended for
zones broadcasting background music or paging and only when the control needs
to be accessible by building occupants. Qt-RC3 room controls should NOT be used for
user control of sound masking signals except in some unique healthcare applications.
Consult the Cornerstone document <here> for more information. NEVER use Qt-RC3
room controls for private o󰀩ce control of sound masking signals.
The Qt Room Control can be used to adjust the sound masking level for an
individual room or a space with up to 8 Emitters. Room Controls can be placed in
the cable run and will count as 2 passive emitters in the total number of devices
per run. They do not count against the device total if used with Active emitters.
Additional information regarding layout and installation is available <here>.

Qt X Sound Masking System Installation and Operation Guide page 17
Emitters
Emitters Emitters
Emitters
Emitter Run Layout - Correct and Incorrect
Layouts below show runs with Passive emitters; the same layout will work for Active Emitter runs with the addition of the power injector prior to the
1st Qt Active Emitter. The same emitter type must be on both the A & B runs of any output, and are applicable for both the Qt X 300 and 600 models.
CORRECT INCORRECT

page 18 Installation and Operation Guide Qt X Sound Masking System
Emitter Installation in Hallways or Corridors
Emitter spacing in hallways and corridors should adhere to the same spacing
standards as used for larger open offices, with the distance between emitters
being based on emitter mounting/ceiling heights. See Figure 19. Minimum and
maximum distances from walls and other obstructions should also be maintained,
as outlined for open space sound masking deployment. (See Emitter Spacing
table)
It is preferred that each hallway/corridor area be treated as a separate sound
masking zone to allow for independent level adjustment in most applications.
This is especially important when adjoining areas of lower sound masking levels
such as private offices. An exception can occur however when open office
spaces are connected to a hallway or corridor as follows:
• When a wider hallway extends from an open office area, it is permissible
to continue the open office zone into the hallway with no level adjustment.
This may occur when hallway width is greater than the emitter spacing
used for the open office.
• In cases where hallway width is less than the emitter spacing used in
the open office, the space should be either a separate zone, or have the
DIP switch attenuation applied at the corridor emitters. Each corridor
emitter can be attenuated downward -3 dB (-1.5 dB for Active emitters) if
ceiling heights/materials match and rear emitter DIP switches are used to
compensate for the decrease level required.
Mixing Qt Emitter Types
Both the Qt Standard and Qt Active Emitters may be used on the same sound
masking project with signals supplied by a single Qt X Controller if they are
assigned to different outputs. For example, a Qt X 300 may supply sound masking
with Qt Passive emitters to an open office on Output 1, while simultaneously
supplying both sound masking and paging to private offices with Qt Active
Emitters on Output 2. Additionally, Output 3 can supply sound masking and light
music to a reception area with Qt Active Emitters.
IMPORTANT:Do not mix emitter types in the same output.
NOTE:Emitter type selection must be made on an output-by-output
basis with the web interface or Qt X software. Passive emitters are the default
type for the Qt X 300/600 models.
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Figure 19. Emitter placement / zones in hallways

page 19 Installation and Operation Guide Qt X Sound Masking System
INTERACTING WITH A QtX SYSTEM
There are two (2) current methods of accessing and configuring the system
with differing levels of what can be viewed or affected. The front panel of each
unit has very basic functionality - limited to basic information and operating
mode of that particular controller. The web user interface gives the installer/user
additional access to each system and can assign outputs to zones, set levels,
set schedules and security for the system.
Controller Front Panel
The individual control panel menu give you access or control of this:
• FW version number
• Fault status message
• Hostname
• MAC address (Control)
• IP Address (Control)
• Netmask (Control)
• MAC Address (Media)
• IP Address (Media)
• Netmask (Media)
• Zone Audio level
Qt X Web Interface (online help le <link>)
The web interface allows you access or control to:
• Discover devices and assign them to a system
• Configure a sound masking system
• Create zones and assign outputs to them
• Define the Logic I/O for each controller
• Add and/or configure Audio sources
• Manage and configure Inputs, Zones, and Outputs
• Manage schedule and "Soft Start" planning
• View status and send changes to Zones, Devices, Faults, Outputs, Date/
Time and System Info
• View or make changes to system, device and network settings
• Update Firmware
• Set security (user) access levels
* Items with an asterisk '*' will be included in future rmware releases

Qt X Sound Masking System Installation and Operation Guide page 20
Controller Front Panel Menu / Functionality
When the panel is powered up and connected, you can navigate through the
basics of the system using the 4 push buttons under the front panel display.
What you will be able to view is based on whether the controller is unconfigured
(not part of a system) or configured (part of a defined network system). You can
view the IP address and name of the device, the network mask of the device,
and the current operating mode of the device - configured, unconfigured or
updating firmware.
All Qt X controllers are pre-loaded with a default configuration where every
output is assigned a specific output 1-> zone 1, output 2 -> zone 2, etc. To
connect this controller to a larger Qt X system, the existing configuration needs
to be removed/erased. This can be accomplished within the web interface or in
the Qt X software.
On certain screens, the user can modify the values shown:
1. Press the down button to enter edit mode; cursor appears.
2. Up/down buttons rotate through 0-9.
3. Right/left buttons move cursor forward/backward.
4. Moving past the last character exits edit mode.
View the following information:
• Hostname
• MAC address (control)
• DHCP (control)
• IP Address (control)
• Netmask (control)
• MAC Address (media
• DHCP (media)
• IP Address (media)
• Netmask (media)
• FW version number
• Status message
• Audio output level - up/down buttons will
increase or decrease the volume level
HOSTNAME:
QtX600-23456789
Typical front panel display (simulated)
Unit's Model &
Serial Number
Interacting with a Qt X system (continued)
NOTE: The audio levels can be modied from the front panel after system
conguration, but will not be reected in the web UI unless it is refreshed. This
is accomplished by "refreshing" the window in the web UI.