The AD4Q Axient Digital Quad Receiver sets a new standard in transparent digital audio and maximum spectral efficiency. Groundbreaking performance features include wide tuning, low latency, High Density (HD) mode, and Quadversity™, ensuring solid performance in the most challenging RF environments. Networked control, AES3 + Dante output, and signal routing options bring a new level of management and flexibility to your entire workflow. Compatible with all Axient Digital transmitters.
Automatic limiter function protects against signal clipping, allowing for higher gain settings and preventing unexpected signal peaks
The following components are included with the receiver:
|Bulkhead Adapter, BNC||95A8994|
|1/2 Wave Wideband Antenna (2)||Varies by region|
|BNC-BNC Coaxial RF Cable for Bulkhead Mounting (short)||95B9023|
|BNC-BNC Coaxial RF Cable for Bulkhead Mounting (long)||95C9023|
|Coaxial RF Cascade Cable||95N2035|
|AC Power Cable, VLock||Varies by region|
|AC Power Jumper Cable||Varies by region|
|Ethernet Cable 3 ft.||95A33402|
|Ethernet Jumper Cable||95B33402|
This component is designed to fit into an audio rack.
Warning: To prevent injury this apparatus must be securely attached to the rack.
① Headphone Volume Knob
Controls headphone volume for the selected channel. Clip indicator warns of signal overload or limiter engagement.
Press knob to access Dante options and headphone settings.
② Monitor Jack
¼" (6.3 mm) output jack.
③ Infrared (IR) Sync LED
The LED will turn red when the transmitter and receiver are correctly aligned for IR sync.
④ Infrared (IR) Sync Window
Align with IR window on transmitter to sync.
⑤ Ambient Light Sensor
Automatically detects external lighting conditions.
⑥ Channel Select Button
Press to select channel.
⑦ Sync Button
Press to sync when transmitter and receiver are aligned. The IR Sync LED changes to red to indicate correct alignment.
⑧ Antenna Status LEDs
Indicates status for both antennas:
Note: The receiver will not output audio unless one blue LED is illuminated.
⑨ RF Signal Strength LEDs
Indicate the RF signal strength from the transmitter:
⑩ Audio LEDs
Red, yellow, and green LEDs indicate average and peak audio levels.
The LED will turn red when the limiter is engaged.
Displays information for the selected channel.
⑫ Function Buttons
Press to access editing and configuration options. The buttons are named F1, F2, F3, F4 (from top to bottom) and illuminate to when editing options are available.
⑬ ENTER Button
Press to save changes.
⑭ EXIT Button
Press to cancel changes and return to main menus.
⑮ Control Wheel
⑯ Power Switch
Powers the unit on or off.
① AC Power Input
IEC locking connector, 100 - 240 V AC.
② AC Power Protection Fuse
Protects the AC power cascade from overloads.
③ AC Power Cascade (locking)
Use IEC extension cables to loop power through multiple devices.
④ Ethernet Ports
Four Ethernet ports carry the following signals:
Network Status (green) LEDs:
Network Speed (amber) LEDs:
⑤ Word Clock Input and Thru Ports
⑥ AES3 Switch
Enables AES3 output on Output 3 and Output 4.
⑦ Word Clock Termination Switch
⑧ Balanced XLR Audio Output (one per channel)
⑨ Mic/Line Switch and Ground Lift Switch (one per channel)
⑩ ¼" Audio Output (one per channel)
⑪ Coaxial inputs from Antenna A and Antenna B
RF Connection for Antenna A and Antenna B.
⑫ RF Cascade Connectors C and D
Passes the RF signal from Antenna A and Antenna B to one additional receiver. In Quadversity mode, use these connectors for additional antenna inputs.
⑬ Antenna Bias Indicator LED
⑭ Quadversity Indicator LED
Illuminates when the receiver is configured for Quadversity mode.
The receiver uses a two-tier menu structure to support multiple channels in a single rack space:
From the home screen, use the following methods to access the Device Configuration menu or to enter one of the channel menus.
From the home screen you can view the status of all four channels.
You can rotate the control wheel to choose different views of the information shown on the home screen, including channel name, group and channel, quality meter, gain, and frequency.
|View 1||View 2||View 3||View 4|
The following screen icons indicate receiver modes or settings:
|STD||Standard Transmission Mode|
|HD||High Density Transmission Mode|
|TV:||TV band for selected frequency|
|AES3||AES3 Output Selected|
|View||Selected Home Screen View|
|Scroll Up for More Choices|
|Scroll Down for More Choices|
|Scroll Right for More Choices|
|Scroll Left for More Choices|
|Network Connection Present to Other Shure Devices or WWB|
|Power Switch Locked|
|Front Panel Controls Locked|
|Indicates ShowLink control active between the receiver and the linked transmitter|
|Combining Frequency Diversity Enabled|
|Selection Frequency Diversity Enabled|
|Access Control Enabled|
Use the following menu items and parameter settings to configure the receiver at the device level.
Tip: Use the ENTER button to save changes or press EXIT to cancel without saving.
From the home screen, press the control wheel to access the Device Configuration menu.
Select the tuning band for the receiver.
Enables encryption of the RF signal.
Select Standard or High Density transmitter spacing.
Enable Quadversity mode to configure RF ports to accept four antennas.
Configure, edit, or load custom frequency groups.
Enable antenna bias for active RF antennas.
Adjust TV bandwidth to match regional standards.
Configure AES3 audio parameters.
View, edit, and copy names for networked Dante components.
Use the control wheel to assign or edit an ID.
Configure IP, network, and Dante settings.
Configure Ethernet ports and IP settings.
View the status of Access Control (Enabled or Disabled). Use Wireless Workbench or other Shure control software to enable or disable Access Control.
Use to discover Dante devices on your network.
Display all devices on the network.
Flash the front panel LED of all devices on the network to verify connectivity.
Display the installed firmware version of the selected network component.
Displays internal receiver temperature.
Adjust the brightness of the display.
Inverts the color of the display.
Offers options to turn off display and front panel illumination after 10, 30, or 60 seconds.
Tip: Press any front panel control to interrupt Display Sleep.
DC Power Module Installed
This menu item will only be shown if a DC power module has been installed in the receiver.
Align transmitter IR window and select to update transmitter firmware.
Create and manage user presets.
Restores all receiver parameters to factory settings.
Provides a detailed list of build specifications and vital statistics for the receiver.
Use the following menus and parameters to configure the receiver channels.
Tip: Use the channel selection buttons to navigate between adjacent channels when configuring menu parameters. Use the ENTER button to save changes or press EXIT to cancel without saving.
The Channel Menu Home Screen allows you to view the settings for a selected channel and details of transmitters linked to that channel. Select a channel number to access the menu.
You can adjust gain, group, channel, and frequency by using the EDIT function button.
Use the Channel Menu to select and edit menu parameters. Press the Control Wheel to access the Channel Menu from the Channel Menu Home Screen.
Displays the switch position of the ground lift and level switches.
View and adjust the net system gain for the receiver.
Provides a continuous audio signal tone.
Meter Overload Hold
Enable Overload Hold to capture signal peaks.
Assign a frequency group.
Assign a channel.
Manually select a frequency.
Displays the TV band for the selected frequency.
Use the control wheel to assign or edit the channel name.
Finds available channels within the selected group:
Scans the selected group to find all available channels.
Use to assign and view transmitter slots.
SYNC or Unlink
Displays build details and vital statistics for the selected transmitter.
Select and edit transmitter parameters so they will automatically be set during an IR sync.
Select interference detection setting for the channel.
Configure frequency diversity for handheld or bodypack transmitters.
The receiver offers selectable tuning bands to maximize the use of locally available spectrum.
Note: After setting the RF band, re-sync any transmitters that are linked to the receiver.
Use IR Sync to form an audio channel between the transmitter and receiver.
Note: The receiver band must match the band of the transmitter.
Any change to the encryption status on the receiver such as enabling/ disabling encryption or requesting a new encryption key, requires a sync to send the settings to the transmitter.
The receiver can scan individual channels to find available frequencies or scan an entire group to find the most available frequencies.
Important! Before you begin:
Turn off all transmitters for the systems you are setting up. (This prevents them from interfering with the frequency scan.)
Turn on the following potential sources of interference so they are operating as they would be during the presentation or performance (the scan will detect and avoid any interference they generate).
Channel scan automatically scans a group to find available frequencies.
Group scan automatically finds all available frequencies within a group. Available frequencies can be automatically deployed to receiver channels and other networked components.
Frequencies can be set manually for each channel if you need to select specific values.
The receiver offers two transmission modes to efficiently manage the available spectrum used by the transmitters:
Standard mode employs channel spacing that allows for the operation of transmitters at various power levels.
Standard mode is ideal for situations where spectrum is not limited or when you need to operate transmitters at higher power levels to increase range.
High Density Mode
High Density mode creates additional bandwidth for more channels in crowded RF environments by transmitting at 2 mW RF power and narrowing the modulation bandwidth.
High Density mode is ideal for applications where many channels are needed in a confined area, transmission distances are short, and the number of available frequencies is limited.
Note: Operation mode varies according to region. In Brazil, High Density mode is used.
Each receiver channel contains eight transmitter slots to control the RF signals passed by the receiver. Transmitters can be assigned to the channel slots or "registered" with the receiver.
For added protection from interference, the receiver will issue a warning or block signals from any transmitters that aren't registered.
To assign a transmitter to a receiver channel:
When the sync is complete, the transmitter will be assigned to the slot. The transmitter will remain assigned to the slot until it is unlinked. To remove a transmitter from a slot, use the control wheel to select the slot, and then press UNLINK.
Tip: For quick access, the slots can be accessed from the channel menu by selecting the F4 function button.
In the event of signal degradation, Interference Management technology provides options to move to a clean, compatible frequency, either manually or automatically.
Respond to an alert by manually selecting a new frequency, or allow the Spectrum Manager or Wireless Workbench to automatically deploy a backup frequency the instant interference is detected.
Tip: To dismiss a interference alert, select the affected channel, and then select Dismiss.
Interference Management can be configured for each channel individually.
The Mode setting determines how the receiver will switch to a clear frequency in the event of interference
The unregistered transmitter option determines how the receiver reacts to the presence of unregistered transmitters, which can be a potential source of interference.
From the Interference Management menu, choose one of the following options:
The frequency server option allows you to assign a networked Spectrum Manager as a server for clear frequencies in the event of interference.
The home screen displays a channel quality meter, providing a visual indicator of the RF signal-to-noise ratio. When the RF signal is strong with a low level of noise, all five segments of the meter are filled or the number 5 is displayed.
If the noise floor increases, fewer segments are displayed or the quality number drops. Low levels of channel quality provide an early warning of potential problems, allowing you to switch to a clear frequency.
Quadversity mode configures the receiver to accept four antenna inputs to maximize RF coverage and minimize the risk of dropouts and signal loss caused by interference. The receiver provides two channels of audio when configured in Quadversity mode.
In Quadversity mode, antennas are connected to RF connector ports and to the RF cascade ports, which are converted to act as additional antenna inputs. The receiver must be set to Quadversity to reconfigure the cascade ports.
All antenna ports provide a DC bias to power active antennas. Set the DC power to off when using passive (non-powered) antennas.
To turn off the antenna bias:
Tip: The Antenna Bias screen displays the current draw for each individual antenna and the total current draw for all antennas.
Frequency Diversity enables seamless, uninterrupted audio for mission-critical applications. Frequency Diversity works by transmitting the audio on two independent frequencies from an ADX2FD Frequency Diversity handheld transmitter or from two AD/ADX series transmitters.
When operated in Frequency Diversity mode, the receiver uses two frequencies to provide a single channel of audio. If one frequency experiences interference, the audio from the other frequency is used to prevent dropouts or interruption of the audio.
Using Frequency Diversity in conjunction with Interference Detection provides an additional layer of protection for the audio signal.
The receiver has two RF cascade ports on the rear panel to share the RF signal from the antennas with one additional receiver.
Use a shielded coaxial cable to connect the RF cascade ports from the first receiver to the antenna inputs of the second receiver.
Important: The frequency model (A, B, C) must be the same for both receivers.
The gain and audio output can be individually controlled in real time for each channel.
Select a channel and navigate to the Audio menu, and then choose Gain/Mute.
To adjust the gain:
Tip: Adjust the gain while performing a sound check using typical audio input signal levels and monitor the audio meter LEDs. Reduce the gain if the red LED triggers repeatedly.
To control the audio output:
The receiver features a built-in tone generator to provide a continuous audio signal which is useful for sound checks and for system troubleshooting. The level and frequency of the tone are adjustable.
Note: The tone generator enters the signal chain before the system gain. The overall system gain will affect the level of the tone.
Tip: Set the Level to Off to stop the generator.
The headphone monitoring jack provides options for listening to a selected receiver channel or for accessing and monitoring audio from Dante-enabled devices on your network.
To listen to a receiver channel, select the channel number and use the volume knob to adjust the signal level.
Advanced headphone options allow you to monitor the audio from Dante devices on your network and to adjust the headphone settings.
Access the Headphone Monitor menu by pressing the headphone volume knob. Use the control wheel to select one of the following options:
Press the control wheel to search your network for Dante channels. Scroll to select and monitor a device with the headphones.
Use the control wheel to configure the receiver as a Cue Station, allowing the receiver to act as a central monitoring point for your system. You can add additional channels to Cue Groups. Channels in the Cue Group can be monitored by pressing and holding the channel button on the source receiver.
The System Gain feature allows you to view and calculate all gain stages in the signal chain, including input pads, offsets, and receiver gain. Audio output levels are updated in real time as gain adjustments are made.
The receiver features a 4-port network interface. Dante technology provides an integrated solution to distribute digital audio. Dante uses standard IP over Ethernet and safely coexists on the same network as IT and control data. Selectable networking modes route port signals for flexible network set up.
Receivers can be controlled by Shure Control (Wireless Workbench) for remote management and monitoring. The Dante Controller manages digital audio routing. Signals for AMX and Crestron controllers are carried on the same network as Shure Control.
Wireless Workbench 6 (WWB6) software provides comprehensive control for wireless audio systems. Wireless Workbench enables remote adjustments to networked receivers for real-time changes to gain, frequency, RF power, and control locks. A familiar channel strip interface displays audio meters, transmitter parameters, frequency settings, and network status.
The Dante Controller is a free software program created by Audinate™ to configure and manage networks of Dante-enabled devices. Use the Controller to create audio routes between networked components and to monitor the status of online devices.
The receiver offers two selectable networking modes:
From the factory, the receiver is configured to Split/Redundant mode.
To Configure the switch mode:
An IP address must be assigned to each device in the network to ensure communication and control between components. Valid IP addresses can be assigned automatically using a DHCP server or manually from a list of valid IP addresses. If using Dante audio, a separate Dante IP address must also be assigned to the receiver.
Automatic IP Addressing Mode
Manual IP addressing Mode
The network browser allows you to discover other devices connected to your network. You can view information about the discovered devices, including Device ID, IP address, firmware version, and model name.
The following information and actions are available from the Network Browser:
If the icon is not illuminated, check the cable connection and the LEDs on the network jack.
If the LEDs are not on and the cable is plugged in, replace the cable and recheck the LEDs and network icon.
To check connectivity of WWB6 to the network:
Assigning custom names or IDs helps with monitoring and organizing when the receiver is part of a large system.
Assigning unique names to each channel helps with identification and organization when the receiver is part of a large system.
Use the locking feature to prevent accidental or unauthorized changes to controls and settings. The front panel and power switch can be independently locked or unlocked.
The receiver offers the following display options:
Tip: Press any front panel control to interrupt Display Sleep.
Configuring IR presets allow all transmitter parameters to be automatically set from the receiver during an IR sync.
Individual parameters can be configured in the IR Presets menu. Each preset has the default value of No Change, which leave that setting unchanged by an IR sync.
The receiver features Advanced Encryption Standard (AES-256) to ensure that only the receiver that is keyed to the transmitter can monitor the audio content.
Note: When enabled, encryption is applied to all receiver channels. Encryption does not affect Dante audio signals, audio quality, or channel spacing.
Any change to the encryption status on the receiver such as enabling/ disabling encryption or requesting a new encryption key, requires a sync to send the settings to the transmitter.
Tip: To remove encryption, use the control wheel to select Off and re-sync the transmitter to clear the encryption.
The receiver contains an internal cooling fan to protect against over-temperature conditions.
Tip: The internal receiver temperature is shown on the Fan display screen.
Firmware is embedded software in each component that controls functionality. Installing the latest version of firmware updates the receiver to incorporate additional features and enhancements. New versions of the firmware can be uploaded and installed using the Shure Update Utility tool available in Shure Wireless Workbench 6 (WWB6) software. Software is available for download from http://www.shure.com.
When updating receiver firmware, update transmitters to the same firmware version to ensure consistent operation.
The firmware of all devices has the form of MAJOR.MINOR.PATCH (e.g., 1.2.14). At a minimum, all devices on the network (including transmitters), must have the same MAJOR and MINOR firmware version numbers (e.g., 1.2.x).
CAUTION! Ensure that receiver power and network connections are maintained during a firmware update. Do not turn off the receiver until the update is complete.
Alignment must be maintained during the entire update cycle. Percentage of update progress appears on the receiver display. The receiver display will show the message Complete! when finished.
The Factory Reset function clears the current settings and restores the factory settings.
Caution: All current settings will be cleared during the reset and the receiver will need to reboot.
|No sound||Power, Cables, Radio Frequency, or Encryption Mismatch|
|Faint sound or distortion||Gain, Cables|
|Lack of range, unwanted noise bursts, or dropouts||Radio Frequency (RF)|
|Cannot turn transmitter off or change frequency settings, or can't program receiver||Interface Locks|
|Encryption Mismatch message||Encryption Mismatch|
|Firmware Mismatch message||Firmware Mismatch|
|Antenna Fault Red LED||RF|
Make sure that the receiver and transmitter are receiving sufficient voltage. Check the battery indicators and replace the transmitter batteries if necessary.
Adjust the system gain on the front of the receiver. Ensure the output level on the back of the receiver corresponds to the mic/line input setting of the mixing console, amplifier, or DSP.
Check that all cables and connectors are working correctly.
The transmitter and the receiver can be locked to prevent accidental or unauthorized changes. A locked feature or button will produce the Locked screen on the LCD panel or the lock icon will flash on a transmitter.
Re-sync all receivers and transmitters after enabling or disabling encryption.
Paired transmitters and receivers must have the same firmware version installed to ensure consistent operation. See Firmware topic for firmware update procedure.
If neither blue RF Diversity LED is illuminated, then the receiver is not detecting the presence of a transmitter.
The orange RF Signal Strength LEDs indicate the amount of RF power being received. This signal could be from the transmitter, or it could be from an interfering source, such as a television broadcast. If more than two of the orange RF LEDs are still illuminated while the transmitter is off, then that channel may be experiencing interference, and you should try a different channel.
The red RF LED indicates RF overload. Overloads have the potential to cause interference in multiple system installations. If you are experiencing an overload, turn off the receiver to see if it is causing interference with other components.
If the transmitter is more than 6 to 60 m (20 to 200 ft) from the receiver antenna, you may be able to increase range by doing one of the following:
If you see the red RF LED on a receiver, try the following:
The Antenna Fault red LED indicates a short circuit condition or excessive load at an antenna port.
470–960 MHz, varies by region (See Frequency Range and Output Power table)
100 m (330 ft)
Note: Actual range depends on RF signal absorption, reflection and interference.
25 kHz, varies by region
>70 dB, typical
−98 dBm at 10-5 BER
|AD1||20 – 20 kHz (±1 dB)|
|AD2||Note: Dependent on microphone type|
typical, 20 Hz to 20 kHz, receiver gain setting = -12 dB
|XLR Line Output||120 dB||117 dB|
|Digital (AES3/Dante)||130 dB||126 dB|
-6 dBFS, 1 kHz, System Gain @ +10
Positive pressure on microphone diaphragm produces positive voltage on pin 2 (with respect to pin 3 of XLR output) and the tip of the 6.35 mm (1/4-inch) output.
-18°C (0°F) to 50°C (122°F)
Note: Battery characteristics may limit this range.
-29°C (-20°F) to 65°C (149°F)
−18 to +42 dB in 1 dB steps (plus Mute setting)
|XLR||Transformer Coupled Balanced (1=ground, 2=audio +, 3=audio −)|
|TRS||Transformer Coupled Balanced (Tip = Audio +, Ring = Audio -, Sleeve = Ground)|
100 Ω, Typical, XLR Line Out
|LINE setting||+18 dBV|
|MIC setting||−12 dBV|
30 dB pad
44 x 483 x 333 mm H x W x D
4.8 kg (10.6 lbs), without antennas
Steel; Extruded aluminum
100 to 240 V AC, 50-60 Hz, 0.68 A max.
|Maximum||31 W (106 BTU/hr)|
|Idle||21 W (72 BTU/hr)|
10.9 to 14.8V DC , 4.0 A max.
10/100 Mbps, 1Gbps, Dante Digital Audio
DHCP or Manual IP address
100 m (328 ft)
Note: For connection of one additional receiver in the same band
0 dB, typical
>80 dB, typical
12 to 13.5 V DC, 150 mA maximum, per antenna
Use the following wiring diagram to convert the XLR output to a ¼" output.
|Band||Frequency Range (MHz)||RF Power (mW)***|
|G53||470 to 510||2/10/35|
|G54||479 to 565||2/10/20|
|G55†||470 to 636*||2/10/35|
|G56||470 to 636||2/10/35|
|G57||470 to 616*||2/10/35|
|G62||510 to 530||2/10/35|
|H54||520 to 636||2/10/35|
|K53||606 to 698*||2/10/35|
|K54||606 to 663**||2/10/35|
|K55||606 to 694||2/10/35|
|K56||606 to 714||2/10/35|
|K57||606 to 790||2/10/35|
|K58||622 to 698||2/10/35|
|L54||630 to 787||2/10/35|
|R52||794 to 806||2/10/35|
|JB||806 to 810||2/10|
|X51||925 to 937.5||2/10|
|X55||941 to 960||2/10/35|
Note: *with a gap between 608 to 614 MHz.
Note: **with a gap between 608 to 614 MHz and a gap between 616 to 653 MHz.
Note: ***power delivered to the antenna port.
Note: †operation mode varies according to region. In Brazil, High Density mode is used.