Shure MXA920 User manual

MXA920
Ceiling Array Microphone
User guide for Shure MXA920 ceiling array microphones. Learn how to install square and round mics, set up coverage, and quickly get great
sound in any room.
Version: 0.3 (2022-D)

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Table of Contents
MXA920 Ceiling Array Microphone 4
Getting Started 4
Designer Setup 4
Web Application Setup 6
MXA920 Parts 7
Power Over Ethernet (PoE) 8
Model Variations 8
Optional Accessories 8
MXA920 Codec Certifications 8
What's in the Box 8
Reset Button 9
Reset Modes 9
MXA920 Control Software 9
Controlling Devices with Shure Designer Software 10
How to Update Firmware Using Designer 10
MXA920 Coverage 10
Add Coverage Areas 11
Prevent Unwanted Sounds 13
Use Steerable Lobes 13
Adjust Levels 13
Using Designer's Optimize Workflow 14
Mute Sync 15
How to Install the MXA920 15
NOTICE 16
Installing in a Ceiling Grid 16
VESA Standardized Mounting 19
Suspending from the Ceiling 19
Hard Ceiling Mounting 19
Dante Channels 19
IntelliMix DSP 20
DSP Best Practices 20
Acoustic Echo Cancellation 20
Noise Reduction 21
Automatic Gain Control (AGC) 21
Delay 22
Compressor 22
Parametric Equalizer 22
Encryption 25
Networking Best Practices 25
Switch and Cable Recommendations for Dante Network
ing 25
Device IP Configuration 26
Setting Latency 26
QoS (Quality of Service) Settings 26
IP Ports and Protocols 27
Digital Audio Networking 28
Compatibility with Dante Domain Manager 28
Dante Flows for Shure Devices 29
AES67 29
Sending Audio from a Shure Device 30
Receiving Audio from a Device Using a Different Audio
Network Protocol 30
Paint the MXA920 30
Painting Square Array Microphones 30
Painting Round Array Microphones 32
Using Command Strings 37
Integrate the MXA920 with Camera Control Systems 38

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Troubleshooting 38
Specifications 39
MXA920 Frequency Response 40
Dimensions 41
IMPORTANT SAFETY INSTRUCTIONS 42
Important Product Information 43
Information to the user 43

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MXA920
Ceiling Array Microphone
Getting Started
Designer Setup
After completing this basic setup process, you should be able to:
Discover the MXA920 in Designer
Add coverage areas
Adjust DSP settings and route audio
You will need:
Cat5e (or better) Ethernet cable
Network switch that provides Power over Ethernet (PoE)
Shure Designer software installed on a computer. Download at shure.com/designer.
Step 1: Install and Connect
Install the microphone and connect it to a PoE port on the network switch using Ethernet cable.
Connect your computer running Designer to the same network.
Open Designer. Check that you’re connected to the correct network in Settings.
Go to Online devices. To identify devices, click the product icon to flash the lights on a device. Find the MXA920 in the
list.
Step 2: Route Audio
The easiest way to route audio and apply DSP is with Designer's Optimize workflow. Optimize automatically routes audio sig
nals, applies DSP settings, turns on mute synchronization, and enables LED control for connected devices.
For this example, we'll connect an MXA920 and a P300.
Go to My projects > New project to make a new project.
Select New > Room (live). Any online devices appear in the list. Drag and drop the MXA920, P300, and any other de
vices to add them to your room.
Select Optimize. You can also route audio manually in Designer outside of the Optimize workflow, or use Dante Con
troller.

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Check the audio routes and settings to make sure they fit your needs. You might need to:
Delete unnecessary routes.
Verify that AEC reference signals are correctly routed.
Fine-tune DSP blocks as needed.
Send audio from the P300 to other sources using the matrix mixer. A common destination is a computer connected by
USB with conferencing software.
Step 3: Add Coverage
The default setting is a 30 by 30 foot (9 by 9 meter) dynamic coverage area. Any talker inside has coverage, and anything out
side that area won't be picked up.
To add more coverage areas:
Go to [Your room] > Coverage map and select the MXA920.
Select Add coverage and choose a dynamic or a dedicated coverage area. You can add any combination of up to 8
coverage areas per microphone. Move and resize as needed.
Set up a way to listen to the microphone directly (with a Dante headphone amp, for example). Place a test call with the
whole conferencing system. Adjust gain and DSP as needed to get a good room sound.

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You can also turn off automatic coverage in Settings to manually position up to 8 lobes.
Web Application Setup
After completing this basic setup process, you should be able to:
Access the MXA920's web application
Add coverage areas
Route audio to other Dante devices using Dante Controller
You will need:
Cat5e (or better) Ethernet cable
Network switch that provides Power over Ethernet (PoE)
Shure Web Device Discovery and Dante Controller software
Step 1: Install and Connect
Install the microphone and connect it to a PoE port on the network switch using Ethernet cable.
Connect the computer running Shure Web Device Discovery and Dante Controller to the same network.
Open Shure Web Device Discovery. Find the MXA920 in the list of devices, and doubleclick to open the web applica
tion.
Step 2: Add Coverage
The default setting is a 30 by 30 foot (9 by 9 meter) dynamic coverage area. Any talker inside has coverage, and anything out
side that area won't be picked up.
To add more coverage areas:
Go to Coverage > Add coverage.
Choose a dynamic or a dedicated coverage area. You can add any combination of up to 8 coverage areas per micro
phone. Move and resize as needed.
Set up a way to listen to the microphone directly (with a Dante headphone amp, for example). Adjust the gain and DSP
as needed to get a good room sound. There are gain faders for each coverage area and for the automix output.
You can also turn off automatic coverage in Settings to manually position up to 8 lobes.

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Step 3: Route Audio
To route audio to other Dante devices, use Dante Controller.
Open Dante Controller and find the MXA920 in the list of transmitters. With automatic coverage on, the MXA920 only
sends audio from the automix output. Transmit channels 1-8 only work when automatic coverage is off.
Find the Dante device you're sending audio to in the list of receivers. To make an audio route, check the box where the
MXA920's automix output intersects with the receiver device's input channel.
Place a test call with the whole conferencing system. Adjust coverage, gain, and DSP as needed.
MXA920 Parts
Mute status LED
Customize LED color and behavior in Designer: Device configuration > Settings > Lights.
Default Settings
Microphone Status LED Color/Behavior
Active Green (solid)
Muted Red (solid)
Hardware identification Green (flashing)
Firmware update in progress Green (progresses along bar)
Reset Network reset: Red (progresses along bar)
Factory reset: Triggers device power-up
Error Red (split, alternate flashing)
Device power-up Multi-color flash, then blue (moves quickly back and forth
across bar)
Note: If LEDs are disabled, they will still turn on when the device powers up or when an error state occurs.

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Reset button
RJ-45 network port
Network status LED (green)
Off = No network link
On = Network link established
Flashing = Network link active
Network speed LED (amber)
Off = 10/100 Mbps
On = 1 Gbps
Eyelet screws for suspension mounting (12 mm diameter)
VESA MIS-D mounting holes
Safety tether attachment points
Power Over Ethernet (PoE)
This device requires PoE to operate. It is compatible with Class 0 PoE sources.
Power over Ethernet is delivered in one of the following ways:
A network switch that provides PoE
A PoE injector device
Model Variations
SKU Description
MXA920W-S White square microphone
MXA920W-S-60CM White square microphone (60 cm)
MXA920AL-R Aluminum round microphone
MXA920B-R Black round microphone
MXA920W-R White round microphone
Optional Accessories
A900-S-GM Gripple Mount Kit, Square
A900W-R-GM Gripple Mount Kit, Round, White Cover
A900B-R-GM Gripple Mount Kit, Round, Black Cover
A900-S-PM Pole Mount Kit, Square
A900W-R-PM Pole Mount Kit, Round, White Cover
A900B-R-PM Pole Mount Kit, Round, Black Cover
A900-PM-3/8IN Threaded Rod Adapter Mounting Kit
MXA920 Codec Certifications
Find MXA920 audio codec certifications at shure.com/mxa920.

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What's in the Box
Square or round array microphone MXA920-S or MXA920-R
Square or round hardware kit
Square:
Cable ties (8)
Strain relief tabs (3)
Rubber pad set
Round:
Cable ties (8)
Strain relief tabs (3)
Square: 90A49117
Round: 90A49116
Reset Button
The reset button is behind the grille. To push it, use a paper clip or other tool.
Button locations:
Square array microphones: Behind the grille hole with a silkscreened circle around it.
Round array microphones: Behind the first grille hole to the right of the mute status LED.
Reset Modes
Network reset (press for 4-8 seconds): Resets all Shure control and audio network IP settings to factory defaults. Red
LED along bar.
Full factory reset (press for more than 8 seconds): Resets all network and configuration settings to the factory defaults.
Multicolor flash, then blue LED along bar.

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MXA920 Control Software
There are 2 ways to control the MXA920:
Use Shure Designer software
Control all Shure devices in one place
Route audio to and from Shure devices
Access the MXA920's web application with Shure Web Device Discovery
Control 1 microphone at a time
Route audio with Dante Controller software
Controlling Devices with Shure Designer Software
To control this device's settings, use Shure Designer software. Designer enables integrators and system planners to design au
dio coverage for installations using MXA microphones and other Shure networked devices.
To access your device in Designer:
Download and install Designer on a computer connected to the same network as your device.
Open Designer, and check that you’re connected to the correct network in Settings.
Click Online devices. A list of online devices appears.
To identify devices, click the product icon to flash the lights on a device. Select your device in the list and click Config
ure to control device settings.
Learn more at shure.com/designer.
You can also access device settings using Shure Web Device Discovery.
How to Update Firmware Using Designer
Applies to Designer 4.2 and newer.
Before setting up devices, check for firmware updates using Designer to take advantage of new features and improvements.
You can also install firmware using Shure Update Utility for most products.
To update:
Open Designer. If there's new firmware that you haven't downloaded yet, Designer shows a banner with the number of
updates available. Click to download firmware.
Go to Online devices and find your devices.
Choose a firmware version for each device from the Available firmware column. Make sure that no one is editing device
settings during an update.
Select the checkbox next to each device you plan to update and click Update firmware. Devices may disappear from
Online devices during an update. Don't close Designer while updating firmware.
MXA920 Coverage
To access coverage map settings:
Designer: Add the microphone to a room, and go to Coverage map.
Web application: Go to Coverage.
To control automatic coverage, go to Settings > General > Automatic coverage.

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How Much Space Does the MXA920 Cover?
For most rooms, Shure recommends:
Maximum distance from talker to microphone: 16 feet (4.9 meters)
Maximum mounting height: 12 feet (3.7 meters)
These numbers also depend on your room's acoustics, construction, and materials. With automatic coverage on, the default
coverage area is a 30 by 30 foot (9 by 9 meter) dynamic coverage area.
How Does Coverage Work?
When you use automatic coverage, the microphone captures talkers you want to hear and avoids areas you tell it to avoid. You
can add a mix of up to 8 dynamic and dedicated coverage areas per microphone.
If you turn off automatic coverage, you can manually steer up to 8 lobes.
With automatic coverage on or off, the MXA920 uses Shure's Autofocus technology to finetune coverage in real time as talk
ers shift positions or stand. Autofocus is always active, and you don't need to adjust anything for it to work.
Add Coverage Areas
Automatic coverage = On
When you open Coverage, there's a 30 by 30 foot (9 by 9 meter) dynamic coverage area ready to use. Any talker inside has
coverage, even if they stand up or walk around.
Select Add coverage to add more coverage areas. You can use up to 8 coverage areas per microphone, and you can mix both
types as needed. Drag and drop to move coverage areas.
™

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Dynamic Coverage Areas
Dynamic coverage areas have flexible coverage, which means that the microphone intelligently adapts to cover all talkers in
the coverage area. Change the size to fit your space, and any talker within the boundaries of the coverage area will have mi
crophone coverage (even as they move).
Dedicated Coverage Areas

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Dedicated coverage areas have microphone coverage at all times. They have a set size of 6 by 6 feet (1.8 by 1.8 meters) and
work best for talkers that are in one position most of the time, like at a podium or a whiteboard.
Prevent Unwanted Sounds
As you set up coverage, you may want to block unwanted sounds from your microphone signal (such as doorways or HVAC
equipment). There are 2 ways to block unwanted sounds in part of a room:
Muted coverage
No coverage
Two Ways to Block Unwanted Sound
Muted Coverage No Coverage
How does it sound? Great rejection for unwanted sounds Good rejection for unwanted sounds
Can unwanted sound get picked up?
No. Sounds inside muted coverage ar
eas won’t be picked up by active cover
age areas.
Possibly. Sounds outside coverage ar
eas can be picked up at low levels by
active coverage areas.
Does it use coverage areas? Yes No
To use the muted coverage method:
Place a coverage area where you want to block unwanted sounds. Select the coverage area.
Select Mute in the properties panel. This post-gate mute mutes any sound inside the coverage area.
To use the no coverage method:
Move or change the size of dynamic coverage areas to avoid the parts of a room with unwanted sounds.
Move dedicated coverage areas.
Move or delete extra microphone lobes (when automatic coverage is turned off).
Use Steerable Lobes
Automatic coverage = Off
To use steerable lobes, turn off automatic coverage in Settings > General > Automatic coverage. You can manually po
sition up to 8 microphone lobes. This mode is best for when you need direct outputs, like for a multi-zone voice lift system.
The microphone doesn't use coverage areas when automatic coverage is off.
See the MXA910 guide to learn more about using lobes.
Adjust Levels
Before adjusting levels:
Set up a way to listen to the microphone directly using a Dante headphone amp
®or with Dante Virtual Soundcard.
Open Designer and find the MXA920 in the list of online devices. Alternatively, launch device's web application.
Automatic Coverage On
Talk in each coverage area at a normal speech volume. You can adjust:
Coverage area gain (post-gate): From the Coverage tab, open the properties panel on the right side. Select the
coverage area to see post-gate gain and mute controls.
IntelliMix gain (post-gate): Go to the IntelliMix tab to adjust the automix out level and control DSP settings.

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Adjust EQ settings as needed. You can use EQ to improve speech intelligibility and minimize noise. If your EQ changes
cause a large increase or decrease in the level, adjust the levels as in step 1.
Automatic Coverage Off
In this mode, there are 2 sets of gain faders:
Channel gain (pre-gate): To adjust, go to Channels. These faders affect a channel's gain before it reaches the automixer
and therefore affect the automixer's gating decision. Boosting the gain here will make the lobe more sensitive to sound
sources and more likely to gate on. Lowering gain here makes the lobe less sensitive and less likely to gate on. If you're
only using direct outputs for each channel without the automixer, you only need to use these faders.
IntelliMix gain (post-gate): To adjust, go to IntelliMix. Alternatively, select a lobe in Coverage to see post-gate gain and
mute controls in the properties panel. These faders adjust a channel's gain after the lobe has gated on. Adjusting the gain
here will not affect the automixer's gating decision. Only use these faders to adjust the gain of a talker after you are satis
fied with the automixer's gating behavior.
Using Designer's Optimize Workflow
Designer's Optimize workflow speeds up the process of connecting systems with at least 1 microphone and 1 audio processor.
Optimize also creates mute control routes in rooms with MXA network mute buttons. When you select Optimize in a room, De
signer does the following:
Creates audio routes and mute control routes
Adjusts audio settings
Turns on mute synchronization
Enables LED logic control for applicable devices
The settings are optimized for your particular combination of devices. You can customize settings further, but the Optimize
workflow gives you a good starting point.
After optimizing a room, you should check and adjust settings to fit your needs. These steps may include:
Deleting unnecessary routes.
Checking levels and adjusting gain.
Verifying that AEC reference signals are correctly routed.
Fine-tuning DSP blocks as needed.
Compatible devices:
MXA910
MXA920
MXA710
MXA310
P300
IntelliMix Room
ANIUSB-MATRIX
MXN5-C
MXA Network Mute Button
To use the Optimize workflow:
Place all relevant devices in a room.
Select Optimize. Designer optimizes microphone and DSP settings for your equipment combination.

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If you remove or add devices, select Optimize again.
Mute Sync
Mute sync ensures that all connected devices in a conferencing system mute or unmute at the same time and at the correct
point in the signal path. Mute status is synchronized in the devices using logic signals or USB connections.
To use mute sync, make sure logic is enabled on all devices.
Designer's Optimize workflow configures all necessary mute sync settings for you.
Compatible Shure logic devices:
P300 (Also mutes supported soft codecs connected by USB)
ANIUSB-MATRIX (Also mutes supported soft codecs connected by USB)
IntelliMix Room software (Also mutes supported soft codecs connected by USB)
MXA910
MXA920
MXA710
MXA310
Network Mute Button
ANI22-BLOCK
ANI4IN-BLOCK
Logic-enabled MX microphones connected to ANI22-BLOCK or ANI4IN-BLOCK
MX392
MX395-LED
MX396
MX405/410/415
To use mute sync, route the microphone’s signal to a processor that has logic turned on (P300, ANIUSBMATRIX, or IntelliMix
Room software). Microphones always have logic turned on.
For help with specific mute sync implementations, see our FAQs.
How to Install the MXA920
There are many ways to install MXA920 microphones. See below for details about the mounting and accessory options for
square and round array microphones.
Installation Best Practices
Don't place the microphone behind obstructions.
Coverage depends on your room's acoustics, construction, and materials. Take these into consideration when planning.
For most rooms, Shure recommends 12 feet (3.7 meters) as the maximum mounting height.
Square mounting options:
In a ceiling grid
With a VESA mounting device
On NPT pole
Suspend from ceiling with A900-GM
Suspend from ceiling with your own hardware
On 3/8-inch threaded rod
In a hard ceiling

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Round mounting options:
With a VESA mounting device
On NPT pole
Suspend from ceiling with A900-GM
Suspend from ceiling with your own hardware
On 3/8-inch threaded rod
NOTICE
Due to a preliminary finding by a federal court in the United States, Shure is authorized to ship the MXA920-S-60CM. This
model is fully certified and lawful to use anywhere in the world, but is not lawful to be used in the United States in a drop ceiling
mounting configuration such as shown below. It is also unlawful to use adapters in an attempt to fit this smaller version into a
ceiling grid in the United States such that it mounts substantially as shown below.
Furthermore, the MXA920S60CM is not designed or intended to be installed within a 24” ceiling grid, which is the standard
grid size in North America. Mounting in such a grid in the above-shown configuration is unsafe and may cause damage to the
product and/or injury to those below. The MXA920-S-60CM is safe and lawful for use in other mounting configurations, such as
with hard ceilings, or suspended from a VESA pole or suspension wiring, anywhere in the world.
Installing in a Ceiling Grid
Before you begin:
Remove the plastic cover from the microphone.
If using, install the rubber pads on the corners of the microphone to prevent scratches.
Verify that your ceiling grid size matches your model variation.
If using the A910-JB junction box, install it before ceiling installation.
IMPORTANT: Do not install the 60 cm model in a 2 foot (609.6 mm) ceiling grid.
Make space in the ceiling grid for the array microphone to be installed.
Route the Ethernet cable above the ceiling grid and through the opening in the ceiling.
Plug the Ethernet cable in to the microphone.

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Attach the safety tether between the building structure and one of the tie-off points on the back of the microphone using
braided metal cable or other high-strength wire (not included). This safety measure prevents the microphone from
falling in an emergency situation. Make sure there is no tension on the safety tether. Follow any local regulations.
Install the microphone in the ceiling grid.
*Flush-mount installation only permissible outside United States.
Installing the Junction Box Accessory
The A910JB junction box mounts on square ceiling array microphones to connect conduit. There are 3 knockouts on the junc
tion box for attaching conduit. See local regulations to determine if the junction box is necessary.
Note: Install the junction box on the microphone before installing the microphone in the ceiling.

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To install:
Remove the knockout you plan to use on the junction box.
Remove the 4 screws from the microphone as shown.
Align the junction box with the screw holes. If possible, plug the network cable into the microphone before securing the
junction box.
Reinstall the 4 screws to secure the junction box to the microphone.

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VESA Standardized Mounting
The rear plate has 4 threaded holes for attaching the microphone to a VESA mounting device. The mounting holes follow the
VESA MIS-D standard:
Screw specification: M4 thread (hole depth = 9.15 mm)
Hole spacing: 100 mm square
The VESA mounting holes work with Shure's A900-PM and A900-PM-3/8IN accessories to mount the microphone on a pole.
Suspending from the Ceiling
Suspend the microphone using your own equipment, or with Shure's A900-GM kit (includes mounting cables and hooks).
To mount using your own equipment, you will need:
Braided metal cable or high-strength wire
Hardware to attach cable to ceiling
Attach the mounting cables to the 12 mm diameter eyelet screws on the microphone.
Attach the cables to the ceiling using the appropriate hardware.
Hard Ceiling Mounting
You can mount square ceiling array microphones in hard ceilings without a tile grid using the A910-HCM accessory.
Learn more at www.shure.com.

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Dante Channels
The automatic coverage setting changes the number of Dante outputs on the MXA920.
Automatic Coverage On
1 automix output with IntelliMix DSP for all coverage areas
1 AEC reference input
Note: When automatic coverage is on, Dante Controller shows 8 transmit channels and the automix output. The automix output is the only channel that sends
audio with automatic coverage on.
Automatic Coverage Off
Up to 8 separate Dante outputs (1 for each lobe)
1 automix output with IntelliMix DSP
1 AEC reference input
IntelliMix DSP
This device contains IntelliMix digital signal processing blocks that can be applied to the microphone's output. The DSP blocks
include:
Acoustic echo cancellation (AEC)
Automatic gain control (AGC)
Noise reduction
Compressor
Delay
To access, go to the IntelliMix tab.
DSP Best Practices
Apply DSP blocks as needed. Run a test of your system without DSP, and then add processing as needed to fix any is
sues that you hear in the audio signal.
Unless you encounter video that lags behind audio, set delay to off.
Acoustic Echo Cancellation
In audio conferencing, a far-end talker may hear their voice echo as a result of a near-end microphone capturing audio from
loudspeakers. Acoustic echo cancellation (AEC) is a DSP algorithm which identifies the far-end signal and stops it from being
captured by the microphone to deliver clear, uninterrupted speech. During a conference call, the AEC works constantly to opti
mize processing as long as far-end audio is present.
When possible, optimize the acoustic environment using the following tips:
Reduce speaker volume
Position speakers farther from microphones
Avoid pointing speakers directly at microphone coverage areas