Shure GLXD6+ User manual

GLXD6+
Guitar Pedal Receiver
Online user guide for GLXD6+ wireless system. Includes setup instructions, specifications, and more.
Version: 1.1 (2023-A)

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Table of Contents
GLXD6+ Guitar Pedal Receiver 3
System Overview 3
Features 3
Guitar Pedal Receiver 3
Display Screen, Indicators, and Controls 4
Receiver Mode 4
Tuner Mode 5
Set Up the Receiver 6
Bodypack Transmitter 6
Transmitter Status LED 8
Wearing the Bodypack 8
Install Transmitter Batteries 8
Batteries and Charging 9
Charging from an AC Power Source 9
Charging Status LEDs 9
Charging Times and Transmitter Runtimes 10
Transmitter Battery Meter 10
Important Tips for Care and Storage of Shure Recharge
able Batteries 11
Tips to Improve Wireless System Performance 11
Additional Tips 11
Receiver Operation 11
Audio Gain Adjustment 11
Locking and Unlocking the Controls 12
Identifying Linked Transmitters and Receivers with Re
mote ID 12
Receiver Band Modes 12
Tuner Menu 13
Tuner Options 13
Indicator: Needle or Strobe 13
Choosing Live or Mute Audio Output 14
Display Brightness 15
Detune 15
Sharps and Flats 15
Reference Pitch 16
Using the Tuner 16
Needle Mode 16
Strobe Mode 17
Using a Third-Party Power Supply 17
Firmware 18
Resetting Components 18
Resetting the Receiver 18
Resetting the Transmitter 19
Troubleshooting 19
Accessories 20
Specifications 21
Diagrams 25
Frequency Tables 26
IMPORTANT SAFETY INSTRUCTIONS 32
WARNING 34
Note: 34
Information to the user 34
Certifications 35

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GLXD6+
Guitar Pedal Receiver
System Overview
GLX-D+ Dual Band Digital Wireless offers confidence without complexity. Dual-band operation in 2.4 and 5.8 GHz more than
doubles the available bandwidth to avoid interference without audio interruption. The receiver is compatible with a selection of
lavalier, headset, and vocal microphones. The included lithium-ion battery offers up to 12 hours of runtime, and can be charged
directly on the receiver or via USB-C.
Features
Exceptional digital audio clarity
Compatible with multiple legendary microphone options
Automatically moves away from interference without audio interruption
Operates in 2.4 and 5.8 GHz spectrum
Rechargeable battery delivers up to 12 hours of runtime
Rock-solid RF performance for multiple system installations
License-free frequency range
Guitar Pedal Receiver

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①DC power connector
Connect DC power supply (9 to 15 V DC, 400 mA minimum).
Note: Compatible with positive tip or negative tip power supplies.
②INSTR IN Use receiver as a wired guitar pedal tuner.
③INSTR OUT
Connect to amplifier or mixer.
Note: If using multiple effects pedals, place the receiver pedal first in the signal chain.
④USB-C port Connect to computer to download firmware updates.
⑤Display Shows receiver and tuner settings. See below for more information on display controls.
⑥Antenna Two antennas per receiver. Antennas pick up the signal from the transmitter.
⑦Footswitch Press to select receiver or tuner mode.
Display Screen, Indicators, and Controls
The controls and display offer specific functionality depending on which mode is selected:
Receiver Mode
① Transmitter battery me
ter Illuminated segments indicate remaining battery life.
②Display
Group
Channel
LK (controls locked)

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UN (controls unlocked)
-- (frequency not available)
③Link button Press to manually link receiver to a transmitter or to activate the remote ID function.
④Mode button Press to enable audio gain adjustment. Use ▲ ▼ buttons to adjust gain.
⑤Audio LED Illumination corresponds to audio level. Rapid flashing indicates audio clipping.
⑥Mute LED Illuminates when audio output is muted.
⑦RF LED
ON = Linked transmitter is on
Flashing = Searching for transmitter
OFF = Linked transmitter off or transmitter unlinked
⑧Channel button Press to select and edit channel.
⑨Group button Press to select and edit group.
Tuner Mode
①Flat indicator Illuminates when note is flat.
②Tuning bar display LEDs illuminate to indicate tuning deviation.
③Sharp indicator Illuminates when note is sharp.
④Note display Displays the name of the note or (--) if the tuner is idle.
⑤Mode button Press to enter tuner menu settings.
⑥Arrow buttons Use ▲ ▼ buttons to select and edit menu settings.

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⑦ Frequency detuned/Ref
erence pitch offset indica
tor
A dot is displayed when the tuning or pitch has been set to a non-standard value.
Note: Non-standard tuning or pitch settings scroll across the receiver display during power-up.
Set Up the Receiver
Connect the PS24 power supply to the receiver and plug the cord into an AC power source.
Connect the transmitter to the instrument.
Connect the audio output to an amplifier or mixer.
Note: The receiver powers on after the power supply and ¼" cable are connected.

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Bodypack Transmitter
①Antenna
Carries wireless signal.
②Status LED
LED color and state indicate transmitter status.
③Power switch
Turns the transmitter on/off.
④TA4M input port
Connects to a 4-Pin mini connector (TA4F) microphone or instrument cable.
⑤USB-C charging port
Connect to USB battery charger.

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⑥Link button
Press and hold within 5 seconds of power-on to manually link with receiver.
Press momentarily to activate remote ID function.
⑦Battery compartment
Holds 1 Shure rechargeable battery.
Transmitter Status LED
LED is green during normal operation.
LED color or flashing indicates a change in transmitter status as shown in the following table:
Color State Description
Green
Flashing (slow) Transmitter attempting relink with receiver
Flashing (fast) Unlinked transmitter searching for receiver
Flashes 3 times Indicates locked transmitter when power switch is pressed
Red
On Battery life < 1 hour
Flashing Battery life < 30 minutes
Red/Green Flashing Remote ID active
Amber Flashing Battery error; remove and insert again, or replace battery
Wearing the Bodypack
Clip the bodypack to a belt or slide a guitar strap through the bodypack clip as shown.
For best results, the belt should be pressed against the base of the clip.
Install Transmitter Batteries
Important: Always fully charge a new battery before first use.
Move the locking lever to the open position and slide the battery door open.
Place the battery into the transmitter.
Close the battery door.

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Batteries and Charging
GLX-D+ transmitters are powered by Shure SB904 lithium-ion rechargeable batteries. Advanced battery chemistry maximizes
runtimes with zero memory effects, eliminating the need to discharge batteries prior to charging.
When not in use, recommended battery storage temperature is 10°C (50°F) to 25°C (77°F).
Note: The transmitter will not pass RF or audio signals when connected to the charging cable.
The following battery charging options are available:
Charging from an AC Power Source
Plug the charging cable into the charging port on the transmitter.
Plug the charging cable into an AC power source.
Charging Status LEDs
LED Color Description
Green (solid) Device is fully charged
Red (solid) Charging
Amber (flashing) Out of temperature range, or battery error
Off Power supply is disconnected, or no device is docked in the charging bay

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Charging Times and Transmitter Runtimes
Use the following table to determine approximate battery runtime based on the duration of charging time when in 5.8 GHz
mode. Times shown are in hours and minutes. Transmitters automatically poweroff after approximately 1 hour to conserve bat
tery life if the signal from a linked receiver is not detected.
Receiver Bay or AC Power Source Charging Transmitter Runtime
0:15 up to 1:30
0:30 up to 3:00
1:00 up to 6:00
3:00 up to 11:30*
*Storage time or excessive heat will reduce maximum runtime.
Note: If receiver is powered off and remains plugged in, battery will continue charging.
Transmitter Battery Meter
The number of segments illuminated on the meter indicates the remaining battery life for a linked transmitter:
①= > 30 min
②= > 2 hours
③= > 4 hours
④= > 6 hours
⑤= > 8 hours
⑥= > 10 hours
⑦= > 11.5 hours
Note: The LEDs will cycle on/off while battery life is being calculated.

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Important Tips for Care and Storage of Shure Rechargeable Batteries
Proper care and storage of Shure batteries results in reliable performance and ensures a long lifetime.
Always store batteries and transmitters at room temperature
Ideally, batteries should be charged to approximately 40% of capacity for long-term storage
During storage, check batteries every 6 months and recharge to 40% of capacity as needed
Tips to Improve Wireless System Performance
If you encounter interference or dropouts, try the following suggestions:
Place receiver at least 3 meters (10 feet) away from Wi-Fi access points, computers, or other active 2.4 GHz and 5.8
GHz sources.
Avoid heavy Wi-Fi traffic activities such as downloading large files or viewing a movie.
Turn on any Wi-Fi prior to turning on receivers and scanning for the best channel.
Reduce transmitter-to-receiver distance by placing receivers on stage or above the audience with a clear line of sight to
the transmitter.
Move receiver to the top of the equipment rack for a clear line of sight.
Mount antennas remotely to place closer to transmitters and improve RF reliability if receivers cannot be moved
closer.
Make sure people do not block the line of sight between receiver and transmitter.
Additional Tips
Do not place competitive 2.4 GHz and 5.8 GHz receivers near GLXD4R+ receivers.
Scan for the best available channel by pressing the channel button.
Keep transmitters more than 2 meters (6 feet) apart. This is less critical with shorter receiver-to-transmitter distances.
Note: If transmitters are within 6 inches of non-GLX-D+ transmitters or microphone cartridges, audible noise is possible.
Move transmitter and receiver away from metal or other dense materials.
During sound check, mark trouble spots and ask performers to avoid those areas.
Receiver Operation
Audio Gain Adjustment
Transmitter gain has an adjustment range from -20 dB to +40 dB in 1 dB increments.
Tip: Try the 0 dB (unity gain) setting as a starting point, and then make gain adjustments if necessary.
Press and hold the mode button on the receiver until dB appears on the display.
Press the up/down arrows to adjust the gain. For faster adjustments, press and hold the buttons.
Note: The intensity of the green audio LED corresponds to the audio level. Rapid flashing indicates audio clipping. Reduce the gain to remove the overload.

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Locking and Unlocking the Controls
The controls of the receiver and transmitter can be locked to prevent unauthorized setting changes or poweroff. The lock sta
tus is not changed by power cycles.
Locking the Receiver Controls
Simultaneously press and hold the group and channel buttons until LK appears on the screen. Repeat to unlock.
LK is displayed if a locked control is pressed
UN is displayed momentarily to confirm the unlock command
Locking the Transmitter Controls
To lock directly from the transmitter:
Start with the transmitter off, then press and hold the link button while turning on the transmitter. Release the link button when
the transmitter powers on to prevent an accidental factory reset. The lock icon appears on the receiver screen when locked.
Repeat sequence to unlock.
To lock from the receiver front panel:
Simultaneously press and hold the group and link buttons for approximately 2 seconds until the flashing lock icon appears on
the receiver screen. Repeat sequence to unlock.
Note: The transmitter status LED will flash if a locked switch is set to the off position.
Identifying Linked Transmitters and Receivers with Remote ID
Use the remote ID feature to identify linked transmitter and receiver pairs in multiple receiver systems.
To activate remote ID:
Momentarily press the link button on the transmitter or receiver.
The screen of the linked receiver will blink and display ID, while the status LED on the linked transmitter will flash red/
green.
To exit remote ID mode, momentarily press the link button or allow the function to timeout.
Receiver Band Modes
There are 3 band modes available for GLXD+ receivers. The band mode options are:
2.4 GHz-only mode
5.8 GHz-only mode
Best band mode – 2.4 and 5.8 GHz (default)

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To change the band mode:
Press and hold the channel button while powering on the receiver. Continue to hold the channel button for approximate
ly 5 seconds until the band selection menu opens.
Press the up/down gain button to select a band mode. The screen will flash momentarily and scan for the best channel
to use.
Note: Linked receivers and transmitters must be able to operate in the same band. Transmitters that don’t support the selected band mode will unlink from the
receiver.
Tuner Menu
Enter tuner mode by pressing the footswitch.
In tuner mode, the controls will only affect tuner functions. RF and audio settings are not affected.
Note:
Wired use: Wired input does not load the guitar signal, eliminating the need for bypass switches. The unit passes wired
signal if power is lost to the pedal.
Wireless use: Bypass does not apply because the pedal needs to be powered on to receive wireless signal.
Tuner Options
Indicator: Needle or Strobe
Output: Live, Mute, or Both
Display Brightness
Detune
Sharps and Flats
Reference Pitch
Selecting and Editing Tuner Menu Settings
Use the following buttons to select and edit the tuner menu settings:
Use the mode button to access the menu and scroll between menu settings.
Use the ▲ ▼ buttons to change a menu parameter.
Use the footswitch to enter and save parameter changes.
Indicator: Needle or Strobe
The tuner indicator can be set to display a needle style or strobe style.
Needle
A single LED will illuminate on the tuning bar to indicate sharp or flat. The green center LED will illuminate when the note is in
tune.

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Strobe
A sequence of three LEDs will travel across the tuning bar in the direction of sharp or flat. The LEDs will remain stationary
when the note is in tune.
Note: Indicator and Output settings are displayed in a scroll from left to right.
Choosing Live or Mute Audio Output
Set the audio output to the following modes when the footswitch is pressed in tuner mode.
Note: Text for the output settings are displayed in a scroll from left to right.
Mode Footswitch Function
Live Receiver Display (audio Live) ↔Tuner Display (audio Live)
Mute Receiver Display (audio Live) ↔Tuner Display (audio Mute)
Both Tuner Display (audio Mute) ↔Tuner Display (audio Live)*
*Note: In Both mode, the pedal powers up in Receiver Display. Press the footswitch to enter tuner mode.

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Display Brightness
The receiver has a built-in light sensor to automatically adjust the display brightness.
To manually adjust the brightness choose one of the following settings:
Detune
The tuner can be set to display standard tuning for instruments that have been detuned up sharp or flat in the following incre
ments:
Up to 5 steps sharp (#1-#2 -#3-#4-#5)
Up to 6 steps flat (b6-b5-b4-b3-b2-b1)
The notation for standard tuning is b0
Note: A dot appears on the display as a reminder that the pedal is detuned.
Sharps and Flats
Adds sharp or flat symbols to the display of non-natural notes.

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Reference Pitch
The reference pitch can be offset from standard A440 in a range of 432 Hz to 447 Hz in 1 Hz increments.
When adjusting the pitch, the last 2 digits of the value will be displayed. For example, "32" would appear on the display when
the pitch has been set to 432 Hz.
A dot appears on the display as a reminder that the reference pitch has been offset.
Using the Tuner
Press the footswitch to enter tuner mode.
Play each note individually. The display shows the name of the note.
Adjust tuning until both indicators illuminate and the needle or strobe indicate that tuning is correct.
Needle Mode
Both tuning indicators and the center green segment will illuminate when the note is in tune.

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Strobe Mode
Both tuning indicators will illuminate and the strobe segments will remain stationary when the note is in tune.
Using a Third-Party Power Supply
To power your wireless receiver pedal, we recommend using the included power supply or a power supply with isolated power
outputs.
If using a power supply with isolated power outputs, use a power outlet rated at a minimum of 400 mA.
However, if using other third-party power supplies:
Check the power consumption for each pedal in a daisy-chain setup. You must know the total power consumption for all of
your pedals to avoid overloading the power supply.
If no power requirement is listed on the pedal, consult the pedal manufacturer.

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Firmware
New versions of the firmware can be uploaded and installed using the Shure Update Utility tool.
Download Shure Update Utility from shure.com
To update your firmware, connect the device to your computer using a USB-C cable and open the Shure Update Utility.
Resetting Components
Use the reset function if it is necessary to restore the transmitter or receiver to their factory settings.
Resetting the Receiver
Restores the receiver to the following factory settings:
Gain level = default
Controls = unlocked
Press and hold the link button while turning on the receiver power until the display shows RE.
Note: When reset is complete, the receiver will automatically initiate linking to search for a transmitter. Press and hold the transmitter link button within five
seconds of powering-on to complete the link.

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Resetting the Transmitter
Restores the transmitter to the following factory settings:
Controls = unlocked
Press and hold the transmitter link button while turning on the transmitter until power LED turns off.
When the link button is released, the transmitter will automatically initiate linking to find an available receiver. Press the link but
ton on an available receiver to relink.
Troubleshooting
Issue Indicator Status Solution
No sound or faint sound
Receiver RF LED on
Verify all sound system connections or ad
just gain as needed.
Verify that the receiver is connected to mix
er/amplifier.
Receiver RF LED off
Turn on transmitter.
Make sure the batteries are installed correct
ly.
Link transmitter and receiver.
Charge or change transmitter battery.
Receiver display off
Make sure AC adapter is securely plugged
into electrical outlet.
Make sure receiver is powered on.
Transmitter indicator
LED flashing red Charge or change transmitter battery.
Transmitter plugged
into charger. Disconnect transmitter from charger.
Audio artifacts or dropouts RF LED flickering or off
Change receiver and transmitter to a differ
ent group and/or channel.
Identify nearby sources of interference (cell
phones, WiFi access points, signal proces
sor, etc.) and shutdown or remove source.
Charge or change transmitter battery.
Ensure that receiver and transmitter are po
sitioned within system parameters.
System must be set up within recommended
range and receiver kept away from metallic
surfaces.

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Issue Indicator Status Solution
Transmitter must be used in line of sight
from receiver for optimal sound.
Distortion OL indicator appears on
receiver display Reduce transmitter gain.
Transmitter and receiver link unsuccessful
Transmitter and receiver
LEDs flash to indicate
that linking started, but
the link fails
Update both components to the latest
firmware version.
Sound level variations when switching to dif
ferent sources N/A Adjust transmitter gain as necessary.
Receiver/transmitter won't turn off Transmitter LED flash
ing rapidly Controls locked.
Receiver gain control cannot be adjusted N/A Check transmitter. Transmitter must be on to
enable gain changes.
Receiver controls cannot be adjusted
LK shown on receiver
display when buttons
are pressed
Controls locked.
Transmitter ID function does not respond Transmitter LED flashes
green 3 times Controls locked.
Transmitter information does not appear on
the receiver display N/A Linked transmitter is off or the receiver is not linked to a transmitter.
Transmitter powers off after 1 hour Transmitter status LED
off
Transmitters automatically power-off after 1
hour to conserve battery life if the signal
from a linked receiver is not detected. Make
sure that linked receiver is turned on.
Accessories
Cable, Instrument, 2.5 foot (.75 m), 4 Pin Mini Connector (TA4F) to 1/4inch Connec
tor. WA302
Cable, Instrument, 2-foot (0.7m), 4-pin Mini Connector (TA4F) with Right-Angle 1/4-
inch Connector, used with Shure Wireless Bodypack Transmitters WA304
Shure Rechargeable Battery SB904
USB-C Battery Charger SBC10-USBC
Premium Guitar Cable TQG Threaded Connector WA305
Power Supply PS24