Allen & Heath GLD Digital Mixing System User Guide

Limited One Year Manufacturer's Warranty

This product is warranted to be free from defects in materials or workmanship for a period of one year from the date of purchase by the original owner.

To ensure a high level of performance and reliability for which this equipment has been designed and manufactured, read this User Guide before operating.

In the event of a failure, notify and return the defective unit to the place of purchase. If this is not possible, then please contact the authorised Allen & Heath distributor or agent in your country as soon as possible for repair under warranty, subject to the following conditions:

Conditions Of Warranty

• The equipment has been installed and operated in accordance with the instructions in this User Guide.
• The equipment has not been subject to misuse, either intended or accidental, neglect, or alteration other than as described in the User Guide or Service Manual, or approved by Allen & Heath.
• Any necessary adjustment, alteration, or repair has been carried out by an authorised Allen & Heath distributor or agent.
• This warranty does not cover fader wear and tear.
• The defective unit is to be returned carriage prepaid to the place of purchase, an authorised Allen & Heath distributor or agent with proof of purchase. Please discuss this with the distributor or the agent before shipping.
• If the unit is to be repaired in a different country to that of its purchase, the repair may take longer than normal, whilst the warranty is confirmed and parts are sourced.
• Units returned should be packed to avoid transit damage.
• In certain territories, the terms may vary. Check with your Allen & Heath distributor or agent for any additional warranty which may apply.
• If further assistance is required, please contact Allen & Heath Ltd.

The GLD range of products complies with the European Electromagnetic Compatibility directives 2004/108/EC and the European Low Voltage directives 2006/95/EC.

Any changes or modifications to the equipment not approved by Allen & Heath could void the compliance of the product and therefore the user's authority to operate it.

GLD User Guide AP8561 Issue 3

Copyright © 2013 Allen & Heath. All rights reserved

Allen & Heath Limited, Kernick Industrial Estate, Penryn, Cornwall, TR10 9LU, UK

http://www.allen-heath.com

IMPORTANT - Read these instructions before starting:

Safety instructions

Before starting, read the Important Safety Instructions printed on the sheets supplied with the equipment. For your own safety and that of the operator, technical crew, and performers, follow all instructions and heed all warnings printed on the sheet and on the equipment panels.

System operating firmware

The function of the GLD is determined by the firmware (operating software) that runs it. Firmware is updated regularly as new features are added and improvements made. This guide relates to Version 1.2 firmware.

The latest firmware can be downloaded from the Allen & Heath web site, transferred to USB key, and then loaded into the GLD mixer using the Firmware Update utility. If the AudioRack firmware is different to that running on the mixer, it is automatically updated by the GLD mixer when the mixer powers up.

• Check the Allen & Heath web site for the latest version of GLD firmware.

Software licence agreement

By using this Allen & Heath product and the software within it, you agree to be bound by the terms of the relevant End User Licence Agreement (EULA), a copy of which can be found on the Allen & Heath website in the product's pages and in the About section of the GLD built-in Help Manual. You agree to be bound by the terms of the EULA by installing, copying, or using the software.

Further information

For further information about the GLD, please refer to the user guides associated with each system component. Also refer to the GLD Touch Screen Reference Guide available on the web site, and use the on-screen Help Manual available on the GLD-80 surface. Refer to the Allen & Heath web site for additional downloads, resources, knowledgebase, and technical support.

General precautions

• To prevent damage to the controls and cosmetics, avoid placing heavy objects on the control surface, obstructing movement of the motorised faders, scratching the surface or touch screen with sharp objects, or rough handling and vibration.
• Protect the equipment from damage through liquid or dust contamination. Avoid dust or small objects getting into the fader slots. Cover the mixer when it is not being used for a long period.
• Computer and touch screen technology can be affected by extreme cold. If the equipment has been stored in sub-zero temperatures, allow time for it to reach normal operating temperature before use at the venue. Recommended operating temperature for GLD is 5 to 35 degrees Celsius.
• Avoid using the equipment in extreme heat and direct sunlight. Make sure the mixer and rack ventilation slots are not obstructed and that there is adequate air movement around the equipment.
• Transport the GLD using a touring grade, purpose-designed flightcase with adequate foam lining and internal support for protection.
• Clean the control surface with a soft brush and dry lint-free cloth. Avoid the use of chemicals, abrasives, or solvents.
• It is recommended that servicing is carried out only by an authorised Allen & Heath agent. Contact details for your local distributor can be found on the Allen & Heath web site. Allen & Heath do not accept liability for damage caused by maintenance, repair, or modification by unauthorised personnel.

Packed contents, registration and accessories

GLD Mixer

Includes: User Guide AP8561, Mains lead (check for territory correctness).

Safety Sheets available: AP3345 (English), AP7287 (French), AP8513 (Chinese).

GLD-AR2412 AudioRack

Includes: CAT5 cable (2m / 6.6'), AH8822, Information AP8596, Mains lead (check for territory correctness).

Safety Sheets available: AP3345 (English), AP7287 (French), AP8513 (Chinese).

GLD-AR84 AudioRack

Includes: CAT5 cable (2m / 6.6'), AH8822, Information AP8720, Mains lead (check for territory correctness).

Safety Sheets available: AP3345 (English), AP7287 (French), AP8513 (Chinese).

Accessories available

The 2m CAT5 cable shipped with the GLD AudioRack is for initial setup or local connection. For longer distances, refer to the Allen & Heath web site for recommended cable types. Available accessories include:

• LEDlamp (Part LEDlampX): Right-angled 4-pin XLR with built-in dimmer.
• 120m (396') CAT5 drum (AH8721): For use with dSNAKE and ACE™ connection only.
• 80m (264') CAT5 drum (AH7000): For use with all GLD CAT5 connections.
• Soft cover for GLD-80 (AP8806): Black, water-repellent polyester.

GLD Systems

The GLD offers various system configurations:

GLD mixer only

8 inputs (4 mics), 10 outputs. 4 mics at mixer. Can use I/O module option for networked audio.

Standard system

32 inputs (28 mics), 22 outputs. 24 mics at rack, 4 mics at mixer.

Requires: GLD-80 or GLD-112 x1, GLD-AR2412 x1. Connect to dSNAKE.

Compact system

16 inputs (12 mics), 14 outputs. 8 mics at rack, 4 mics at mixer.

Requires: GLD-80 or GLD-112 x1, GLD-AR84 x1. Connect to EXPANDER.

Expanded system

40 inputs (36 mics), 26 outputs. 32 mics at racks, 4 mics at mixer.

Requires: GLD-80 or GLD-112 x1, GLD-AR2412 x1, GLD-AR84 x1. Connect to dSNAKE.

Fully expanded system

48 inputs (44 mics), 30 outputs. 40 mics at racks, 4 mics at mixer.

Requires: GLD-80 or GLD-112 x1, GLD-AR2412 x1, GLD-AR84 x2. Connect to dSNAKE and EXPANDER.

ME Personal Mixing System Interface

The GLD can interface directly with the Allen & Heath ME Personal Mixing System to allow musicians, performers, and presenters to control their own monitor mix without using up GLD mix buses. Visit the Allen & Heath web site to find out more.

Daisy chain connection

One or more ME-1 personal mixers can connect to any GLD dSNAKE port (dSNAKE, Expander, Monitor).

Parallel connection

Each ME-1 mixer can be connected with its own cable using a standard PoE Ethernet switch or the Allen & Heath ME-U hub.

GLD Remote app for iPad

Allows remote wireless control using one or more iPads via a wireless access point (router) connected to the GLD Network port. The app can be downloaded from the Apple Store.

Note: GLD Remote version 1.2 must be used with a mixer running V1.2 firmware.

Introduction

GLD is an affordable live sound digital audio mixing system from Allen & Heath. At its low price point and with its intuitive user interface and 'plug n play' connection, it provides the perfect upgrade for users of analogue mixers such as the Allen & Heath GL Series, and for small to mid-sized venues, tours, and rental companies looking for an affordable yet fully featured and configurable professional digital solution that is easy to learn, operate, and maintain.

GLD components

There are two GLD mixers available: the GLD-80 with 20 faders, and the larger GLD-112 with 28 faders. The DSP is located in the mixer and can process 48 channels x 30 buses x 20 mix outputs plus 8 'RackFX' internal effects devices with dedicated return channels, bringing the total number of sources able to feed the mix to 56. The rear panel provides connections for 8 inputs and 10 outputs plus a slot to fit one of several audio networking cards available from Allen & Heath.

Adding one or more of the available AudioRacks lets you configure systems with up to 40 remote mic inputs in addition to the mixer rear connections. This gives you a distributed audio system with convenient CAT5 digital snake based on the proprietary Allen & Heath dSNAKE protocol. The main I/O (Input/Output) rack is the GLD-AR2412 AudioRack, providing 24 mic/line inputs and 12 line outputs. It also features a MONITOR port compatible with the Allen & Heath ME and Aviom® personal mixing systems. The GLD-AR84 AudioRack is an expander I/O remote rack adding an extra 8 mic/line inputs and 4 line outputs. You can add up to two GLD-AR84 racks: one at the GLD-AR2412, the other at the GLD-80 mixer.

Compatibility with iLive

GLD is not compatible with iLive components, firmware, Libraries, or Show files. However, it is compatible with the range of iLive Port B option cards, letting you interface easily between GLD and iLive or other systems using a digital snake such as ACE, MADI, EtherSound, or Dante.

Key features

• Plug and play components for systems from 4 to 44 mics.
• Easy to use, quick access, analogue-style interface with 8.4" colour touch screen.
• Remote I/O using dSNAKE CAT5 digital snake - up to 120m (400') length.
• High grade 1dB/step recallable mic/line preamps.
• 48 channels into 30 buses with 20 outputs – assignable mono/stereo Group, Aux, FX, Main, Matrix.
• 8 stereo RackFX engines with dedicated return channels – total 56 sources to the mix.
• 64 channel I/O network card option for FOH/Monitor split, recording, link to iLive, and more.
• Full processing on all inputs – Preamp, trim, polarity, HPF, insert, Gate, PEQ, Compressor, Delay.
• Full processing on all outputs – Ext input, Insert, PEQ, GEQ, Compressor, Delay.
• Dedicated keys for quick Copy/Paste/Reset of mixes and processing parameters.
• Input, insert, and output soft patchbays.
• GLD-80 = 20 faders, 2 Banks of 4 Layers each – 80 freely assignable strips for custom layout.
• GLD-112 = 28 faders, 3 Banks of 4 Layers each – 112 assignable strips.
• Virtual write-on strip – 8 colour backlight LCD strip display for naming and colour coding.
• 14 user assignable SoftKeys on GLD-112, 10 SoftKeys on GLD-80.
• 16 DCA / Mute groups.
• Compatible with the Allen & Heath ME personal mixing system and Aviom® A-Net 16.
• USB stereo recording and playback.
• Built-in Talkback, RTA display, Signal Generator.
• Monitor mode features – Input override output PAFL, engineer's Wedge and IEM strips.
• GLD Remote iPad app for wireless mixing and parameter control.
• MIDI In/Out and Network ports.
• Libraries, Scenes, and Show memories.
• 10 User Profiles for restricted operator access.
• Get started quickly with Template Shows for classic FOH or Monitor configuration.

System block diagram

The block diagram illustrates the audio signal flow and processing through the GLD mixer. The GLD-AR2412 and GLD-AR84 AudioRacks provide inputs as shown in the 'Remote Inputs' box, and outputs as shown in the 'Remote Outputs' box. These signals connect to the GLD via the dSNAKE or EXPANDER ports. Note the options available for AUX sends, FX sends, and global Direct Out. Configuration possibilities are shown for the MIX masters.

Signal Flow Description: Audio signals enter from 'Remote Inputs' via dSNAKE or EXPANDER ports, feeding into 48 input channels. These channels undergo processing (PAD, GAIN, TRIM, POL, HPF, GATE, PEQ, COMP, DELAY) and are routed through a DSP Engine (48 channels x 30 buses x 20 mix channels). The system supports various routing options for AUX sends, FX sends, and Direct Outs. Outputs are processed through MIX MASTERS (GRP, AUX, MAIN, MTX, PAFL) and then sent to 'Remote Outputs' via dSNAKE or EXPANDER, or to local outputs (XLR, RCA, SPDIF, AES).

Input and output sockets

The diagram shows the interconnection and socket numbering of the fully expanded system. Each socket has a unique number. Any input socket or source can be patched to any of the 48 channels. Any mix or other GLD signal can be patched to any of the output sockets. The default is one-to-one mapping, e.g., Socket 1 → CH1, Socket 2 → CH2, and so on.

Input Sockets

• Mixer dSNAKE (GLD-AR2412 Main rack): Sockets 1-24 (XLR mic/line).
• GLD-AR84 Expander at rack: Sockets 25-32 (XLR mic/line).
• Mixer EXPANDER (GLD-AR84 Expander at mixer): Sockets 33-40 (XLR mic/line).
• Mixer REAR (GLD): Sockets 41-44 (XLR mic/line), 45/46 (RCA stereo line), 47/48 (RCA stereo line).

Output Sockets

• Mixer dSNAKE (GLD-AR2412 Main rack): Sockets 1-12 (XLR line).
• GLD-AR84 Expander at rack: Sockets 13-16 (XLR line).
• Mixer EXPANDER (GLD-AR84 Expander at mixer): Sockets 17-20 (XLR line).
• Mixer REAR (GLD): Sockets 21-24 (XLR line), 25/26 (RCA line), 27/28 (SPDIF digital), 29/30 (AES digital).

Additional Inputs (GLD mixer Rear I/O Port)

• 1-64 Input channel.
• Surface USB port: From USB key (L-R Stereo playback).

Additional Outputs (GLD mixer Rear I/O Port)

• 1-64 Output channel.
• Surface USB port: To USB key (L-R Stereo record).

Connections

• GLD-AR84 AudioRack: Inputs 25-32, Outputs 13-16 when connected to AR2412 via EXPANDER.
• GLD-AR2412 AudioRack: Inputs 1-24, Outputs 1-12.
• MONITOR Port: CAT5 cable link for ME personal mixing system or Aviom A-Net 16.
• dSNAKE Port: CAT5 cable link for AR2412 to GLD mixer, carrying 32 inputs, 16 outputs, and monitor port sends. Max CAT5 cable length: 120m (396').
• EXPANDER Port: CAT5 cable link for AR84 to AR2412 or GLD mixer.
• MIDI: MIDI In and Out.
• I/O Module Port: Accepts iLive Port B cards for networking, digital mic split, recording, and linking to iLive. Supports ACE, MADI, Dante, EtherSound, Waves, MMO.

I/O Port fitted with MMO card option

Up to 64 GLD inputs and 64 outputs can be assigned to an audio option card fitted to the GLD rear panel I/O Port. The MMO (Mini Multi Out) card provides several output formats, including ADAT optical out, iDR links, and compatibility with Aviom® A-Net 16 or ME personal mixing systems.

GLD Port Map (MMO Sockets)

ADAT: 1-24 (ADAT 1-24)

iDR A: 25-32 (iDR-A 1-8)

iDR B: 33-40 (iDR-B 1-8)

Aviom®: 41-56 (Aviom 1-16)

Assign each output:

• Unassigned
• Input Direct Out
• Group
• Aux
• Main Mix
• Matrix
• Rack FX
• USB playback
• Input socket
• I/O Port input
• PAFL monitor
• Wedge/IEM monitor

The GLD Family

GLD-112

The larger mixer with 28 faders and 14 SoftKeys. Features 3 Fader Banks, each with 4 Layers, totaling 112 assignable strips. Includes a shelf for iPad.

GLD-80

The smaller mixer with 20 faders and 10 SoftKeys. Features 2 Fader Banks, each with 4 Layers, totaling 80 assignable strips. The mixers differ in size, fader count, and SoftKeys, but share the same 48-channel, 30-bus, 20-mix-output architecture and similar rear panel layout.

GLD-AR2412 Main AudioRack

Typically positioned on stage and connected via CAT5 'digital snake'. Provides 24 remote mic/line inputs, 12 XLR line outputs, an Expander port, and a Monitor port for connecting to ME personal mixing or Aviom® A-Net16 systems. A GLD system can have a maximum of one AR2412.

GLD-AR84 Expander AudioRack

Provides 8 remote mic/line inputs and 4 XLR line outputs. Can be connected to the AR2412 Expander port (expanding stage mic inputs to 32) or to the mixer's Expander port. A GLD system can have a maximum of two AR84s.

GLD Remote App

Allows wireless remote mixing control using an iPad connected via a wireless router to the GLD Network port.

GLD Mixer controls

Channel Processing Strip

Analogue-style processing control section for Preamp, HPF, Gate, PEQ, and Compressor. Press the strip 'Sel' key to access processing for the input or master. Further parameter control is available via the touch screen 'Processing' screen.

Routing select key

Displays assignments and sends for the selected strip while in Processing mode.

Strip LCD display

Shows channel status information and user-defined Name and Colour.

Strip rotary controls

Function is selected using keys like Gain, Pan, Custom 1, and 2 (assignable via Setup/Control screen).

Strip meters

Top red indicator lights when a peak is detected. Also displays RTA activity in GEQ on Faders mode.

Fader Banks

Groups of motorised faders with 4 layers each (80 or 112 control strips depending on mixer model). Controls Input channels, FX returns, Mix masters, DCAs, or engineer's Wedge/IEM monitors.

Mute

Mutes the channel signal, affecting main mix and pre/post-fade sends. DCA indicator lights when muted by a DCA master.

Sel

Instantly selects channel processing. Rotary controls become active for Preamp, HPF, PEQ, Gate, and Compressor.

Mix

Displays send levels and assignments on fader strips. Allows working with sends to one Aux or from one channel to all Auxes.

PAFL

Selects PFL (pre-fade listen) or AFL (after-fade listen) signal to headphones/monitoring system. Input PAFL overrides mix master PAFL.

Copy/Paste/Reset keys

Hold 'Copy' and press 'Sel' or 'Mix' to copy parameters. Hold 'Paste' and press 'Sel' or 'Mix' to paste. Hold 'Reset' and press a key to reset parameters to factory default.

Assign and Pre/Post

Accesses assignments and pre/post settings for selected mixes. Hold 'Assign' and press 'Mix' keys to toggle assignments. Hold 'Pre/Post' and press 'Sel' keys to toggle sends pre or post fade.

Alt View

Hold 'Alt View' to display channel/socket numbers or fader dB values instead of names in LCDs. Configured in Setup/Control screen.

Safes

Protects channels/parameters from Scene recall. Can be set using the Safes key and Mix key, or via the Safes Map.

Freeze in Layers

Hold key and press 'Mix' keys to temporarily keep a channel visible across layers. Assign channels to strips via Setup/Control screen.

GEQ on Faders

Presents GEQ for a selected mix on faders. Toggles between high/low frequencies. Frequency values shown on strip LCDs. Mix master fader on the right-hand strip.

Touch Screen

Displays status, system setup, and memory management. Allows graphical view of processing. Keys select screen modes. Rotary control adjusts highlighted parameters.

Main / PAFL meters

Displays signal levels.

USB ports

For transferring Show files, Libraries, event logs, stereo playback, recording, and firmware updates.

Headphones

Level control and 1/4" and 3.5mm sockets.

Press to Talk

Talkback source and destination assigned in Setup/Audio screen.

Help

Touch the '?' button for the built-in Help Manual.

SoftKeys

10 keys with functions assigned via Setup/Control screen.

GLD Mixer rear connectors

GLD sockets can be patched using the I/O screen.

• Cooling fan: Do not obstruct.
• 4-pin XLR Lamp socket: Recommends Allen & Heath LEDlamp.
• LOCK indicator: Lights when audio is sync locked.
• Surface audio inputs: 8 analogue inputs (4 mic/line XLR, 2 stereo RCA pairs). Default one-to-one mapping.
• Power On indicator: Indicates power status.
• Ready indicator: Lights yellow when output sockets are ready.
• Mains power: IEC input socket and On/Off switch.
• Network: Ethernet port for wireless router.
• MIDI: MIDI in and out.
• dSNAKE link: Connects mixer to AR2412 AudioRack (inputs 1-32, outputs 1-16, monitor port sends). Uses CAT5 cable up to 120m (396'). Lnk/Err indicator shows link status.
• EXPANDER link: Connects AR84 expander. Carries inputs 33-40, outputs 17-20. Can be located up to 120m away. Uses CAT5 cable. Lnk/Err indicator shows link status.
• I/O Port: For system linking, expansion, recording, and audio networking via option cards (ACE, MADI, Dante, EtherSound, Waves, MMO). Supports 64-channel bi-directional 48kHz audio.
• Surface audio outputs: 6 analogue (4 XLR line out, 1 stereo RCA pair) and 4 digital outputs (1 SPDIF, 1 AES). Any GLD signal can be patched to any socket.

GLD-AR2412 Main AudioRack

Input sockets: 24 balanced XLR inputs for mic/line level sources. Preamps are remote controlled via dSNAKE. Outputs are converted to digital format and transported via dSNAKE. Sockets 1-24. Default one-to-one mapping to channels 1-24.

Output sockets: 12 balanced XLR outputs at +4dBu line level. Any GLD signal can be patched using the I/O screen. Default Template Shows provide logical mapping.

EXPANDER port: CAT5 cable link to connect a GLD-AR84 expander rack (adds 8 mic/line inputs, 4 XLR line outputs). Sockets numbered as Inputs 25-32, Outputs 13-16. Also connects to ME personal mixing system.

MONITOR port: CAT5 cable link for ME personal mixing system. Compatible with Aviom® A-Net 16 when Aviom mode is selected in I/O/Monitor screen.

dSNAKE port: CAT5 cable link to GLD mixer. Carries 32 inputs, 16 outputs, monitor port sends, and control. Max CAT5 cable length: 120m (396'). Not compatible with iLive ACE.

Fan: Low noise fan for circuit cooling. Ensure good ventilation at the back of the rack.

Mains power input: IEC connector, fuse, power ON/OFF switch for universal voltage power supply (100-240V AC, 50/60Hz). Check for correct mains lead. Secure cable with plastic P-clip.

GLD-AR84 Expander AudioRack

Input sockets: 8 balanced XLR inputs for mic/line level sources. Preamps are remote controlled via EXPANDER link. Outputs converted to digital format and transported via Cat5 cable. Sockets are not numbered; use write-on blocks for labelling based on connection point.

Output sockets: 4 balanced XLR outputs at +4dBu line level. Any GLD signal can be patched. Sockets are not numbered; use write-on blocks for labelling.

EXPANDER port: CAT5 cable link to connect to AR2412 AudioRack or GLD Mixer EXPANDER port. Not compatible with iLive ACE.

Kensington security slot: For attaching an anti-theft cable and lock.

Fan: Low noise fan for circuit cooling. Ensure good ventilation.

Mains cable clip: Secures cable with plastic P-clip.

Mains power input: IEC connector, fuse, power ON/OFF switch for universal voltage power supply (100-240V AC, 50/60Hz). Check for correct mains lead.

Socket numbering: AR84 plugged into AR2412: Inputs 25-32, Outputs 13-16. AR84 plugged into GLD Mixer: Inputs 33-40, Outputs 17-20.

Connect and power up

Connecting the system:

• AR2412 AudioRack: Connect via CAT5 cable to the dSNAKE port on the rack and mixer.
• AR84 AudioRacks: Connect via CAT5 cable to the EXPANDER port of the AR84 and the EXPANDER port of the AR2412 or GLD mixer. Always use the EXPANDER port for AR84; do not use the dSNAKE port.

Mains power: Plug in mains leads, secure with clips. Use a T20 Torx screwdriver to remove the fixing screw if needed.

To turn on the system: Use the rear panel On/Off switches. The GLD takes about 40 seconds to boot up. The screen displays boot sequence, then the Home screen. Yellow Lnk/Err indicators on dSNAKE/EXPANDER ports flash steadily, indicating link establishment. Audio Sync LOCK indicator lights. AudioRack Ready indicators light, and a click is heard as output relays switch.

• If AudioRack firmware differs, the GLD mixer automatically updates it during power-up (indicated by fast flashing Lnk/Err indicators on the AudioRack).

To turn off the system: Power down correctly. Return to the Home screen (turn off active 'Sel' key in Processing view). Touch the 'Power Down' button, confirm, then turn off mixer and racks. Failure to power down correctly may result in lost changes. A 'Not shut down correctly' message may appear on next startup.

GLD Remote iPad app and wireless router

GLD firmware V1.1 onwards supports the GLD Remote iPad app for wireless control of mixing and processing by multiple engineers using iPads. For example, one engineer for FOH mix, another for monitors.

Get the app

Download from the Apple Store. Can be used in Demo mode. Ensure App and GLD firmware versions are compatible; check Allen & Heath web site for latest firmware.

Choose a router

A professional mixing tool requires high-performance network equipment. A dual-band wireless router with auto channel selection is recommended. Use the 5GHz band in busy areas. Auto channel selection finds the least congested channel.

Recommended settings

• GLD (default): Static IP = 192.168.1.50, Subnet Mask = 255.255.255.0.
• Router: Router IP = 192.168.1.254, Subnet Mask = 255.255.255.0, DHCP range = 192.168.1.100 to 200, Security = WPA.

Set up the router

Connect router to PC via wired LAN. Follow manufacturer's instructions.

• Set router IP address: Must be compatible with GLD's static IP (e.g., 192.168.1.254). Check GLD settings via Setup/Config/Network screen.
• Set router DHCP settings: Enable DHCP for iPad. Set allocation range (e.g., 192.168.1.100-200) to avoid conflict with GLD static IP. GLD console can remain on static IP.
• Set router security: Enable WPA/WPA2 encryption. Set a wireless key (password).
• Note router SSID: The network name broadcast by the router.

Connect router to GLD Network socket via CAT5 cable (use LAN port, not Internet port).

Position the router

Place within specified range and line of sight of the iPad. Position high up, avoid obstacles like pillars, walls, metal beams, or loudspeakers.

Recall a 'Template Show' as a starting point

The GLD offers a configurable audio architecture and control layout. 'Template' Show memories provide a quick starting point with familiar console formats. User Shows allow saving and archiving custom setups. Scenes store instant parameter changes for cues.

Show memory contents:

• Current settings
• Mix configuration
• User preferences
• Scene memories
• Libraries

A default show (Template1 LR) is pre-loaded. Other Templates can be loaded as starting points.

The Show Manager screen

Access via Setup / Memory / Show Manager. Lists available Shows (Template and User).

• To load a Template Show: Touch the desired Template Show, then touch 'Recall'. Confirm action. Recalling a Show overwrites all system settings. Save current settings as a User Show first if needed.
• To store a new User Show: Opens keypad to name the Show.
• Template Shows: Shown with a red icon, cannot be deleted.
• User Shows: Shown with a green icon. Can be overwritten, deleted, or renamed. 'Info' shows file size and modification date.
• USB Shows: Shown with a blue icon. Used for copying Shows between USB key and GLD.

Template Show settings

Three Template Shows are available for classic FOH and monitor mixing:

• Template1 LR: Stereo main mix for FOH or monitor mixing.
• Template2 LRM: 3-way main mix with separate Mono bus for centre/fill speakers.
• Template3 Mon: Dedicated monitor mixer with 6 wedge and 6 stereo IEM mixes.

Common settings include: SoftKey assignments are Scene Safe, SoftKeys 1-8 map to DCA mute 1-8, SoftKey 9 clears PAFL, SoftKey 10 is FX4 tap tempo (FOH only), SoftKey 11-12 are unassigned, Scene Confirmation is On. Global Direct Out is post-delay, pre-fade, post-mute. Monitor Port is ME-1 mode. I/O Port out is input socket 1-48. PEQ is 20-20kHz with Curve Fill On. Talkback is Momentary, Dim off. Template1/2 Auxes are post-PEQ, pre-fade. Template3 Auxes are post-fade. FX are post-fade. USB playback assigned to CH47/48. USB recording from LR via stereo Matrix1. Scene 1/499 = 'Reset GLD-80' (default). Scene 2/500 = 'Reset GLD-112' (default).

'Board Reset' Scene: Each Template provides two 'Reset' scenes (1 & 2, and 499 & 500) to reset mixer settings to the template's default. Use this to instantly reset parameters without affecting mix configuration, user preferences, or other Scenes. Recall Filter can protect parameters.

Scene Safes can protect selected parameters globally (e.g., patchbay, SoftKeys).

When creating User Shows from Templates, you can overwrite Scene 1/2, rename, add descriptions, set Recall Filters, or delete them. Default reset scenes (499/500) remain accessible.

Template1 LR Details

Configures a traditional architecture with stereo LR main mix for FOH and Monitor mixing. This is the factory default.

• LR stereo main mix (single master fader).
• 4 Groups (2 stereo) for EQ/compression, sending to Matrix for fill speakers, or grouping inputs for recording.
• 8 Auxes (6 mono, 1 stereo) typically for monitor sends (wedges, IEMs).
• 8 FX (4 assigned to strips) with 3 reverb and 1 delay effects.
• 6 Matrix (2 mono, 2 stereo) for additional speaker sends (delay fills, remote zones) or controlled recording.
• Recording from stereo Matrix 1: Setup ready for stereo recording from main LR mix, patched to analogue/SPDIF outputs and USB stereo recorder.
• 16 DCA / Mute groups: For muting/controlling groups of signals (drums, vocals, effects). 6 DCA masters assigned to faders.
• Talkback using mic socket 44: Input 44 is patched as Talkback source; CH44 is not assigned to a fader strip. Can be assigned if talkback is not used.
• USB playback to CH47/48: Playback from USB key patched to a stereo channel.

Template2 LRM Details

Configures stereo LR plus Mono bus for 3-way FOH mix. Can be changed to LR+M (switched bus), LR+M (mono sum), or LCR via Setup/Config/Mixer Config.

• LR + Mono (switched bus) main mix.
• 2 Groups (1 stereo).
• 8 Auxes (6 mono, 1 stereo).
• 8 FX (4 assigned to strips).
• 6 Matrix (2 mono, 2 stereo).
• 16 DCA / Mute groups.
• Talkback using mic socket 44.
• USB playback to CH47/48.
• Recording from stereo Matrix 1.

Template3 Mon Details

Configures GLD as a dedicated monitor console with 18 mixes.

• 6 mono mixes (wedges, fills).
• 6 stereo mixes (IEMs).
• Auto switching engineer's Wedge/IEM: Pressing a mono Aux (wedge) PAFL key mutes stereo IEM monitor, and vice versa for stereo IEM Aux.
• 8 FX (2 assigned to strips).
• Talkback using mic socket 44.
• USB playback to CH47/48.
• Recording from stereo Matrix 1.

A few things to know before starting

The Touch Screen

Screen graph view for PEQ and dynamics: Touch a pick-up box and drag the curve. Values display in parameter buttons. Adjust parameters using graph, touch buttons, or processing section rotary controls.

Tabs: Select pages for the current screen.

Screen select keys: Press a key to select a view. Press again to return to Processing view.

Screen rotary control: Touch a parameter to highlight it, then turn the rotary to adjust its value.

Pull-up tab: Opens additional controls and options for the current screen.

The Home Screen

Displays after power up. Can be returned to by turning off any active strip 'Sel' key in Processing view, or by turning a 'Sel' key on then off.

• Displays system connection status.
• Displays system information.
• Access the User login screen.
• To safely shut down: Use the 'Power Down' button before turning the system off.
• Real time clock: Set date/time in Setup/Utility/Date/Time screen.
• Lock Surface: Locks controls, can be password protected.
• Meter tabs: Open custom meter pages or RTA display. RTA follows PAFL signal.
• Help: Touch '?' for Help page or main Help menu.
• Mix selection: Shows which Mix is currently selected. Check this to ensure correct mix is active.
• USB playback/recording status: Touch to open USB Audio screen.

The strip LCD display

The LCD strip above faders displays channel information. Channels can be named and assigned one of 8 backlight colours for easy identification.

• User-defined backlight Colour.
• User-defined channel Name: Edit in the Processing screen's Name and Colour page.
• Strip Rotary setting: Controls Gain, Pan, Custom 1, Custom 2. Functions assigned via Setup/Control/Surface Prefs screen.
• Stereo Strip type.
• SAFE indicator: Turns on when channel is made 'Safe' from Scene recall.
• DCA indicator: Turns on when channel is assigned to one or more DCA groups.
• Assignment, Mix type, Pre/Post-fader setting: Displayed in the lower section of the LCD, showing channel assignment to the currently selected Mix.

Alt View: Hold 'Alt View' key to see Channel Number, Socket Number, or fader dB value instead of Name in LCD. Choose Alt View function in Setup/Control/Surface Prefs screen.

The Fader Banks

The GLD-80 has 2 Fader Banks (12 and 8 strips), GLD-112 has 3 (12, 8, 8 strips). Each bank has 4 layers, allowing up to 80 (GLD-80) or 112 (GLD-112) assignable strips. Strips can be assigned as Input channels, Mix masters, FX sends/returns, monitor masters, or DCA masters. Template Shows provide logical assignments.

Change strip assignments via Setup/Control/Strip Assignment screen (drag-and-drop).

The Fader Strip keys

Four keys per strip provide quick access to live mixing functions:

• Mute: Turns off channel signal, affecting main mix and sends. Useful for muting unplugged instruments.
• Sel: Instantly selects channel processing. Rotary controls become active for Preamp, HPF, PEQ, Gate, Compressor. Ensure 'Processing' screen key is selected for touch screen control.
• Mix: Displays send levels and assignments on faders. Allows working with sends to one Aux or from one channel to all Auxes. Be aware of the currently selected Mix.
• PAFL: Sends PFL or AFL signal to headphones/monitoring system. Input PAFL overrides mix master PAFL.

Working with the Mix on the fader strips

Normal mix mode (FOH)

This is the standard mixing mode. Input strips show channel faders; Master strips show master mix faders. Hold 'Assign' and press channel 'Mix' keys to assign/de-assign from main mix. Current ON status shown on strip LCDs.

Master Mix view

Used for Aux, FX, Matrix mixes. Input strips show send levels to selected mix; Master strips show master mix faders. Hold 'Assign' and press channel 'Mix' keys to assign/de-assign from selected mix. Hold 'Pre/Post' and press channel 'Sel' keys to toggle sends pre/post fader.

Channel Mix view

Used for Aux, FX sends from a specific input channel. Input strips remain as channel faders; Master strips show sends from the selected channel. Hold 'Assign' and press master 'Mix' keys to assign/de-assign channel from mix. Hold 'Pre/Post' and press master 'Sel' keys to toggle channel pre/post fader to each mix.

DCA and Audio Group assign

Press a Group Master strip 'Mix' key to assign channels to Audio and DCA groups. Input and Master faders are not affected. Hold 'Assign' and press channel 'Mix' keys to assign/de-assign channels from the group.

Working with Scenes

GLD has 500 Scene memories ('snapshots' of mixing parameters). They store mix settings but not bus configuration or user preferences. Use Scenes for instant recall of cues or sound checks. Use Shows to store/archive complete GLD setups. A Scene stores all parameter settings; a Recall Filter allows selection of parameters to recall.

Scenes can be named, described, copied, pasted, deleted, and arranged into Cue Lists.

Global Scene Safes protect parameters from being overwritten. Can be set via Scene Safes screen or by pressing the Safes key with a strip Mix key.

Refer to the GLD Touch Screen Reference Guide for more information.

Scene Manager screen

• Displays list of 500 Scenes.
• Displays a Cue List of selected Scenes.
• Create, name, save, and load Cue Lists.
• Choose parameters to make globally Recall Safe.
• Scene recall: Touch to recall selected Scene. Name flashes green upon recall.
• Naming/Description: Touch keypad to name Scene, type description.
• Recall Filter: Touch to view/edit Recall Filter for selected Scene.
• Delete: Deletes selected Scene.
• Store: Stores current settings to selected Scene, overwriting existing.
• Paste: Overwrites Scene contents with copied Scene contents (including Recall Filter). Can paste to multiple positions.
• Copy: Copies selected Scene for pasting.
• OPTIONS: Toggles Scene Editing Confirmation for Store, Recall, Delete, Copy actions.

User Profiles

GLD supports up to 10 User Profiles (1 Administrator, 9 Users). Set permissions and passwords to restrict access.

• User List: 'Admin' has full access and can set permissions/passwords for other users. Up to 9 guest users can be configured.
• Icons: Indicate if a User is ON (active), has a password, or has a User Scene set.
• Naming: Touch keypad to name User.
• Password: Set or change password (entered twice).
• Comment: Add details or instructions for each user.
• User Scene: Recalls a specific Scene when a different user logs in. Choose 'No Scene' if none required.
• Set Permissions: Enable/disable functions to restrict user access. Category tabs group permissions. Description of affected parameters is shown.

To log in as a different user: Go to Home / Users screen, select User, touch Login. Can also log in from GLD power-up screen if password is set. Password prompt appears on login, power-up, or lock/unlock. User Scene recalls if logging in as a different user.

USB Recording and Playback

Play back stereo audio tracks from a USB key and record any pair of GLD sources onto the key.

Playback

GLD plays back stereo WAV or FLAC files at 44.1/48kHz. Assign USB playback to an Input Channel via I/O/Surface or Preamp screen. Factory Template Shows assign USB playback to CH47/48.

To select a track: Plug in USB key with audio files. Use OPTIONS pull-up to scroll through the list and highlight a track. Track info (path, size, date) is displayed. Use transport buttons (Play, Pause, Stop, Next, Previous) to control playback. A blue arrow in the toolbar indicates playback is active.

Playback options (OPTIONS pull-up): Play Next Track (single/continuous), Repeat Current Track, Show All Files, Show Playback Files (USBPlayback directory), Show Recorded Files (USBRecord directory).

Recording

Format: WAV files at 48kHz. Max recommended recording time per track: 3 hours. Memory required: 188KB/sec (approx. 11.5MB/min, 700MB/hour).

To assign a recording source: Use I/O/Surface screen (e.g., main mix, stereo group, aux, matrix, or two independent mono signals). Factory Template Shows use Stereo Matrix1 for USB recording.

Check recording level: Ensure send level and master fader are up, and source meter shows signal.

To start recording: Touch 'Record' button. Keypad opens to name the recording (default is date/time). Touch 'Apply' to start. Elapsed time and remaining time shown. A red circle in status bar indicates recording. To stop, touch 'Record' again.

USB Folders: AllenHeathGLD/USBRecord (created on recording), AllenHeathGLD/USBPlayback (created when selecting 'Show Playback Files' option).

How to Update GLD System Firmware

Check current firmware version via Setup / Utility / Firmware screen. Download latest firmware from www.allen-heath.com. Regularly check the web site for updates.

• Note 1: Use USB key with at least 40MB free space. Delete existing GLD Firmware.
• Note 2: Do not interrupt firmware transfer to avoid corruption. Ensure reliable power and cables.
• Note 3: Updating firmware restores console to factory default. Store current settings as a Show memory before updating and recall after.
• Note 4: May need to re-calibrate touch screen and faders via Setup / Utility / Calibration screen after update.

Firmware update instructions for Windows:

1. Download firmware: Visit www.allen-heath.com, download zipped file, save to Desktop or chosen folder.
2. Remove previous GLD Firmware from USB key: Delete Firmware directory and Firmware.md5 file from AllenHeathGLD folder on USB key.
3. Extract Zip file to USB key: Open zip, extract all files to root directory. Check for new Firmware directory under AllenHeathGLD. (Do not change folder name or browse inside Firmware folder).
4. Safely remove USB key: Use 'safely remove hardware' icon.
5. Plug key into GLD USB port: Go to Setup / Utility / Firmware, touch 'Update'. Detects USB key and validates firmware.
6. Perform update: Touch 'Update' button. Do not interrupt. Touch 'Reboot' when installed. GLD reboots with new firmware. AudioRacks update automatically.
7. Recall settings: Recall a Template Show or saved User Show.

Firmware update instructions for Mac:

1. Download firmware: Visit www.allen-heath.com, download zipped file, save to Desktop or chosen folder.
2. Remove previous GLD Firmware from USB key: Delete Firmware directory and Firmware.md5 file from AllenHeathGLD folder on USB key.
3. Extract Zip file and copy folder to USB key: Extract zip file, copy AllenHeathGLD folder to USB key root directory. Check for new Firmware directory. (Do not change folder name or browse inside Firmware folder).
4. Eject USB key: Use Finder eject icon.
5. Plug key into GLD USB port: Go to Setup / Utility / Firmware, touch 'Update'. Detects USB key and validates firmware.
6. Perform update: Touch 'Update' button. Do not interrupt. Touch 'Reboot' when installed. GLD reboots with new firmware. AudioRacks update automatically.
7. Recall settings: Recall a Template Show or saved User Show.

USB directory structure

AllenHeathGLD folder: Located in USB key root directory.

• EventLogs: Copied here for Tech Support.
• Firmware: Contains firmware files. Delete before unzipping new version. Do not browse this directory.
• Libraries, Shows, USBPlayback, USBRecord: Store parameter Libraries, User Shows, playback files, and recordings respectively. Create USBPlayback directory manually if needed.

Specification

Inputs

• XLR Mic/Line Inputs: Balanced, recallable preamps. Sensitivity -60 to +15dBu. Pad -20dB. Max Input Level +32dBu. Impedance >4kΩ (Pad out).
• Mic/Line Channel noise: EIN -127dB (150Ω source).
• Mic/Line Channel THD+N: Typically 0.003% -0.005%.
• RCA Line Inputs: Unbalanced. Sensitivity -24 to +24dBu. Trim +/-24dB recallable. Max Input Level +18dBu. Impedance >10kΩ.
• RCA channel Noise: -92dBu (20-20kHz).
• RCA channel THD+N: 0.0035% (-90dBu @ 1kHz).

Outputs

• XLR Outputs: Balanced, relay protected. Impedance <75Ω. Nominal Output +4dBu. Max Output Level +22dBu. Residual Output Noise -91dBu.
• RCA Line Outputs: Balanced, relay protected. Impedance <75Ω. Nominal Output 0dBu. Max Output Level +18dBu. Residual Output Noise -94dBu.
• Digital Outputs: SPDIF, AES3 (2 ch XLR). 48kHz sampling rate.

System

• Measured balanced XLR in to XLR out: 20-20kHz, min Gain, Pad out. Dynamic Range 112dB. Signal to Noise -90dB.
• Frequency Response: 0/-0.25dB @ 20Hz, 0/-0.5dB @ 20kHz.
• Peak level THD+N: 0.0055% (-68dBu @ +17dBu output).
• Line level THD+N: 0.0022% (-84dBu @ +9dBu output).
• Headroom: +18dB.
• Internal operating Level: 0dBu.
• dBFS Alignment: +18dBu = 0dBFS.
• Meter Calibration: 0dB meter = -18dBFS.
• Meter Peak indication: -3dBFS.
• Meter Type: Fast (peak) response.
• Sampling Rate: 48kHz +/-100PPM.
• ADC/DAC: 24-bit Delta-Sigma.
• Latency: 1.49ms (local XLR in/out), 0.68ms (local XLR in/digital out).
• USB Playback: 2 channel, WAV, FLAC 44.1/48kHz.
• USB Record: 2 channel, 48kHz/16bit WAV.
• I/O Port: 64 channel bi-directional. Supports ACE, MADI, Dante, EtherSound, Waves, MMO.
• Operating Temperature: 0°C to 35°C (32°F to 95°F).

Control

• Touch Screen: 8.4" TFT, 800x600 resolution.
• Faders: 100mm motorised.
• GLD-80 Fader Strips: 2 Banks (12,8), 4 Layers = 80 strips.
• GLD-112 Fader Strips: 3 Banks (12,8,8), 4 Layers = 112 strips.
• Strip Display: LCD per strip, assignable backlight colours.
• SoftKeys: 10 assignable.
• MIDI: In and Out.
• Network: TCP/IP Ethernet.

FX Processing

• Internal FX: 8x RackFX engine (Reverbs, Delays, Modulators, etc.).
• Mode: Send>Return, Inserted, Daisy Chain FX.
• FX 'Short' Return Channels: 8 Stereo dedicated returns, adding to inputs for up to 56 sources.
• Controls: Fader, Pan, Mute, Routing to Grp, Aux, FX, Main.
• FX Return PEQ: Same as Input Channel PEQ.

Input Processing

• 48 Processing Channels.
• Trim: +/-24dB digital trim.
• Polarity: Normal/Reverse.
• High Pass Filter: 12dB/octave, 20Hz - 2kHz.
• Insert: Assign to sockets, In/Out, +4dBu/-10dBV level.
• Delay: Up to 85ms, Bypass switch.
• Gate: Input global setting (ms, feet, meters, samples).
• Compressor: Parameters include Threshold, Ratio, Attack, Release, Knee. Manual/Auto types available.
• PEQ: 4-Band fully parametric, +/-15dB. Global setting 20-20kHz or 'Analogue'. Bands cover frequency ranges, with selectable Shelving/Bell/Hi-Pass and Bell Width options.

Mix Processing

• 20 Mix Channels: Configure as mono/stereo Groups, Aux, Main, Matrix. Mains can be None, LR, LCR, LR+M(bus), LR+M(sum).
• External Input: Assignable source.
• Trim: +/-24dB digital trim.
• Polarity: Normal/Reverse.
• Insert: Assign to sockets, In/Out, +4dBu/-10dBV level.
• Delay: Up to 170ms, Bypass switch.
• GEQ: Constant 1/3 octave, 28 bands (31Hz-16kHz), +/-12dB. Overlapping frequency banks on strip faders. SEL key resets frequency band to 0dB.
• PEQ: 4-Band fully parametric, +/-15dB. Global setting 20-20kHz or 'Analogue'. Bands cover frequency ranges, with selectable Shelving/Bell/Hi-Pass and Bell Width options.
• Compressor: Parameters include Threshold, Ratio, Attack, Release, Knee. Manual/Auto types available.
• Talkback: Latched/Momentary, PAFL Dim option.
• High Pass Filter: 12dB/octave, 20Hz-2kHz.
• Routing: To Groups, Aux, Main, Matrix.
• Level Trim: +/-24dB.
• Signal Generator: Sine, White Noise, Pink Noise, Bandpass Noise (20-20kHz). Controls Level, Mute. Routes to Groups, Aux, Main, Matrix.
• RTA: 31-Band 1/3 octave (20-20kHz). Follows selected PAFL source. Option to display dominant frequency.

Dimensions and Weights

• GLD-80 Mixer: Unpacked: 730 x 577 x 159mm (28.7" x 22.7" x 6.2"); Weight: 16.5kg (36lbs).
• GLD-112 Mixer: Unpacked: 1000 x 577 x 159mm (39.4" x 22.7" x 6.2").
• GLD-AR2412 AudioRack: Unpacked: 483 x 220 x 137mm (19" x 8.6" x 5.4") 3U rack; Weight: 5kg (11lbs).
• GLD-AR84 AudioRack: Unpacked: 483 x 220 x 48mm (19" x 8.6" x 1.9") 1U rack; Weight: 3kg (6.6lbs).

Mains Power

• GLD-80: 100-240V AC, 50/60Hz, 95W max.
• GLD-112: 100-240V AC, 50/60Hz, 110W max.
• GLD-AR2412: 100-240V AC, 50/60Hz, 70W max.
• GLD-AR84: 100-240V AC, 50/60Hz, 20W max.

Quick Start Mixing Guide

This guide is for new users or guest engineers to start mixing with GLD, assuming a pre-configured show. For more details on configuration, memories, and advanced functions, refer to the on-screen Help Manual and User Guide AP8561.

1. Fader Banks and Assignments

Identify Input and Master Faders by pressing Layer keys A, B, C, D and reading displays. Change strip assignments via Setup/Control screen.

Alt View: Press 'Alt View' to display channel/socket numbers or fader dB values instead of names in the LCD. Set option in Setup/Control screen.

2. Sockets and Patching

View socket patching using the I/O screen. Change socket assignments by touching and selecting from the drop-down menu.

3. Channel and Mix Processing

Access processing controls (Preamp, HPF, Gate, PEQ, GEQ, Compressor, Delay) via the strip 'Sel' key or touch screen. 'Routing' key shows assignments. 'Mix' type and 'Assignment' are shown on the strip LCD. Touch to change Name and Colour. Processing must be active for parameter adjustments. Use the '?' icon for on-screen Help Manual. Check which Mix is currently selected.

4. Sends and Assignments

Normal mix mode (FOH): Input strips show channel faders; Master strips show master mix faders. Use 'Mix' key to assign/de-assign channels to main mix.

Master Mix view: Input strips show send levels to selected mix (Aux, FX, Matrix); Master strips show master mix faders. Use 'Assign' key to assign/de-assign channels to mix. Use 'Pre/Post' key to toggle sends pre/post fader.

Channel Mix view: Input strips remain channel faders; Master strips show sends from selected channel. Use 'Assign' key to assign/de-assign channel from mix. Use 'Pre/Post' key to toggle channel pre/post fader to each mix.

DCA and Audio Group assign: Use 'Mix' key on Group Master strip to assign channels to Audio/DCA groups. Hold 'Assign' and press channel 'Mix' keys to assign/de-assign.

5. Access the FX

Press FX master 'Mix' key to send to an FX. Press FX strip 'Sel' to adjust FX parameters. Use related 'FXret' channel to return to mix.

6. Link parameters

Use the Ganging screen to link parameters (e.g., 2 channels for stereo keyboard). Choose attributes. Note: Ganging does not link Gains or Trims.

7. To Copy parameters

Hold 'Copy' and press 'Sel' or 'Mix' key of parameters to copy. Hold 'Paste' and press 'Sel' or 'Mix' key of the strip to paste to.

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