
Auscision GT46C-ACe Class
DCC Sound Installation with Lighting Modifications

Now available with our NEW Remastered Custom Sound Project
including "Full Throttle - Drive Hold" feature

About the EDI GT46C-ACe
The GT46C-ACe is an Australian diesel-electric locomotive designed and built by Downer Rail at its Cardiff Locomotive Workshops using Electro-Motive Diesel components between 2007 and 2014. From 2014 the locomotives have been built in the US for several operators and referred to as different classes. The class was a new design for Australian conditions based on other locomotives produced by Downer EDI Rail with the prime mover being a turbocharged EMD 16-710.
SCT Class
The SCT class are used by SCT Logistics on their freight services from Adelaide to Melbourne, Parkes, and Perth. Built between 2007-2008 with a total of 15 units numbered SCT001-SCT015.
TT Class and LDP Class
With the ageing of the 48 and PL class locos, Pacific National purchased 31 TT class locomotives for Hunter Valley traffic. The first locomotives were originally intended to be built as LDP010-LDP018 and leased to other railway operators, until Downer EDI and Pacific National reached an agreement to sell directly.
WH Class
Three WH class locomotives were ordered by Whitehaven Coal, which were operated by Pacific National and used to haul coal trains from Whitehaven's mines in the Gunnedah Basin.
GWA and GWB Classes
Genesee & Wyoming Australia ordered 10 Locomotives in 2011 for the Adelaide–Darwin rail corridor. The locomotives were used on several grain services throughout South Australia. Three GWB class, numbered GWB101 to GWB103, accompanied the GWA class, and they were used on intermodal, grain and ore traffic. They were included in the sale of One Rail Australia assets to Aurizon in July 2022 along with a further three order locomotives by One Rail Australia, numbered GWB104 to GWB106.
SSR Class
The first two class members were originally built as LDP013 and LDP014 in 2013 and were then purchased by Southern Shorthaul Railroad in 2014 to operate on their Weston Milling grain service. Southern Shorthaul Railroad ordered two GT46C ACe Gen-II locomotives in 2023 which entered service in early 2024.
QE Class
Qube Holdings announced in 2022 that it had placed an order for 12 units to be built in the US. They all entered service in 2024.
CBH Class
CBH Group announced in December 2022, that it had ordered seven locomotives from Progress Rail to be delivered by November 2024 to bolster their standard-gauge locomotive fleet. They would be operated by Aurizon under the existing service agreement.
MAN Class
Manildra Group announced in April 2023 that had ordered 17 locomotives from Progress Rail. In an agreement similar to CBH Group's contract with Aurizon, beginning from November 2024, Southern Shorthaul Railroad will provide train crews and oversee daily operation of Manildra owned locomotives and wagons. This replaces Manildra Group's existing agreement with Pacific National, who provided their own rolling stock to service Manildra Group's requirements. These locomotives were expected to be delivered by early 2025.
DCC with Sound and Light Modifications
Custom Built EDI GT46C-ACe Class Sound Project
This is not just a basic factory sound project but a completely custom-built sound project by DCC Solutions. It contains recorded sounds with customised sound programming plus extra features that will make your EDI GT46C-ACe Class Auscision model a uniquely, impressive driving and sounding loco that will turn heads!
Full Throttle – Drive Hold
This feature allows you to simulate a hard-working loaded train by pressing the F1 function button. When the button is pressed, the motor will remain at a constant speed, while the sound can be controlled independently by adjusting the speed on the throttle, so this can simulate a hard-working locomotive. This exciting feature gives the operator the ability to have the loco crawling in notch 8 or coasting at 100 km/h along the track. Release the Drive Hold function button, and you simply go back to throttle-controlled speed, motion, and sound. Available only from DCC Solutions, our Drive Hold will stop your loco when you reduce the speed to zero, even while the function is still active. Your ESU factory sound or sound from other providers will not stop your loco at speed step 0 with the drive hold switched on, which can damage your model because you ran into something.
Coasting On Demand
This feature allows you to enter coasting mode whenever you want with a press of a button. Often, when coming to a stop, the throttle of a real locomotive is put into idle and the locomotive coasts to a stop. Another situation that occurs is that once a train is up to speed when operating over rolling countryside, the driver can coast to maintain a certain speed. By pressing the coast function button, the sound drops into coasting and remains there. Using the throttle speed control, you can now speed up or slow down the train, with the sound remaining in coasting mode. Press the function button to exit coasting, the sound will return to the speed that's set when exiting.
Working Brake
Press the Brake Function button, and your locomotive will come to a stop at a much shorter distance than if you were to bring it to a stop by reducing the throttle speed. Release the brake and your locomotive will move off again, or choose to have it remain stationary when the brake is released. The brake can also be used while driving to slow the locomotive up.
Working Dynamic Brake
Apply the Dynamic Brakes and the Prime Mover will wind down to idle and slow up, then the Dynamic Fans engage to assist with cooling. Reduce the throttle, and the decoder's dynamic braking logic will reduce your speed faster than normal. Disengage Dynamic Braking and the primer mover will return to it's notched speed and the fans will turn off.
Brake Squeal on Deceleration
Activate this function and when you reduce the throttle speed, your locomotive will begin braking and slow up quicker as you continue to lower the throttle speed, and you will hear the squeal of the brakes. Accelerating will release the brakes.
Random Start-up Sequences with Move Off and Stopping Sounds
Now, with random start-up sequences, your start-up and shut down will not always sound the same.
As your locomotive begins to move off you will hear the sounds of brakes releasing with random speed activated wheel squeal, rail noises and other sounds. Some of these sounds are random or speed sensitive that will turn on/off automatically depending on your take-off speed. When the locomotive comes to a stop you will hear the squeal of the brakes, air releases and then the compressor will cut in automatically to fill the reservoirs with air until full and will cut out.
Remastered Horn Sound with Flashing Ditch Lights
Playable and short blast horn with optional alternate flashing ditch lights.
Random Sounds
While the factory fitted sound will only offer you 1-2 random sounds, DCC Solutions will have up to 10 random sounds that will play when either the loco is stopping or moving, to create even more realism to running your model.
Manual Notching
For those who really want to drive their train and manually control the notching rather than letting the decoder do it.
DCC Solutions SOUND and FUNCTION Labels
Premium Sound Installation and Light Modification using the ESU LokSound 5
F0 Directional Headlights
F1 Full Throttle Drive Hold
F2 Horn with Flashing Ditch Lights
F3 High Beam Headlight
F4 Dynamic Brake
F5 Coasting on Demand
F6 Brake
F7 Brake Squeal on Deceleration
F8 Prime Mover Start Up/Shut Down/Mute
F9 Front White Markers On/Off
F10 Rear Red Markers On/Off
F11 Rear White Markers On/Off
F12 Front Red Markers On/Off
F13 Directional Marker Lights
F14 Directional Ditch Lights
F15 Fan
F16 Compressor
F17 Coupling /Uncoupling + DCCS Shunting Mode
F18 Wheel Squeal
F19 Horn
F20 Sanding Valve
F21 Volume Fader — Reduces Sound 50%
F22 Front Headlight
F23 Ditch Light Switch — Front-Rear
F24 Spitter Valves
F25 Manual Notching
F26 Notch Up / Short Air Release
F27 Notch Down / Cab Door
F28 Rail Clank
Note: The above functions are for the LokSound 5 Decoder programmed with DCC Solutions Premium Custom Sound Installation with Light Modification.
The functions and sounds will be different from any standard generic ESU Sound Files or other Sound Decoders.
Learn how to use these functions, see the Info & Help page.
In August 2015, Auscision released the GT46C-ACe Class locomotive, which included a 21 Pin socket for easily fitting a DCC decoder with space for a 40×20 mm speaker.
In July 2025, released their 2nd run of the GT46C-ACe, which was the same as the 1st release but new liveries and numbers
All the lights in the model operate directional in DC/DCC.
For this DCC installation, we recommend the ESU LokSound 5 (Sound) with our remastered Custom Sound Project for the EDI GT46C-ACe Class or the LokPilot 5 (No Sound) for those not wishing sound.
We offer a light modification for the Auscision GT46C-ACe Class to separate the lights for a more prototypical operation
Standard factory lighting in the model has all lights “ON” in the direction of travel, requiring just 2 function light outputs in DCC
Upgraded from the factory standard 2 to a possible 8 Function lighting outputs with the DCC Solutions light modification. We will separate the headlights, white markers, red markers and ditch lights for individual DCC control to provide more prototypical lighting operation when running your Auscision GT46C-ACe Class model. Directional light control will still be available.
Unlike ESU/Auscision factory sound which can use 2-6 sound slots to operate the lights, our light modification does not use any sound slots for lighting. So, all the 10 sound processing channels are available to play sounds when using all the lighting, so you will get the full sound experience all the time.
The DCC Solutions EDI GT46C-ACE Class Custom Sound Project
is packed with sounds and features not found on other sound decoders,
especially factory fitted sound
Factory Fitted Sound only offers very basic sound and features
So why not get fully featured sound from DCC Solutions
Our Custom Sound Project now includes these fantastic features:
And includes all these great features to make your Auscision GT46C-ACe model drive and sound impressive
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EMD 16-710G3C-ES Prime Mover EDI GT46C-ACe Class Custom Built Sound Project
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Short Blast and Playable Horn with Optional Flashing Ditch Lights
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Random Start-up sequences, including Automatic Hot or Cold Engine Start
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Air and Brake Release Sounds when loco moves off and stops, including Brake Squeal
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When the loco stops after braking, the compressor cuts in to fill the reservoir and will turn off when the tanks are full
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Speed sensitive Wheel Squeal and Rail Noise when the loco moves off
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Full Throttle Drive Hold — Lock the loco speed, control the sound independently to simulate a heavy loaded or empty train
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Coasting On Demand
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Working Brake to bring your locomotive to a stop even when Full Throttle Drive Hold is active, unlike other ESU sound files
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Proper Working Dynamic Brakes: When activated, automatically slows down with Dynamic braking, cooling fans operate
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Directional Coupling and Release with brake line release plus auto active shunting mode to reduce the speed of the loco
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Stop & Drive Random Sounds including fans, compressor, rail noise, track wheel squeal, air releases and more!
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EDI GT46C-ACe class compressor
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Wheel Squeal
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Brake Squeal on deceleration and off on acceleration
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Guard's Whistle
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Manual Notching — manually control the notching rather than letting the decoder do it
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And more (See below for full list)
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Modified Lighting Option for more prototypical light operation
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Low beam to High beam Headlight operation
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Alternate Flashing Ditch Lights
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Motor settings tuned for slow speed performance, perfect for shunting
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Sound volumes tuned to specifically suit the Auscision GT46C-ACe Locomotive Model using the DCC Solutions speaker
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Play 10 different sounds simultaneously
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Individual sounds slots and master sound volumes can be adjusted by the user to suit personal requirements
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DCC Solutions High Performance Twin Dynamic Speaker producing fantastic sound
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Full function button remapping to suit your personal requirements
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This Sound Project is also suitable for other brands of GT46C-ACe Class Models
DCC INSTALLATION AND MODIFICATION FEATURES
Standard DCC Installation: Non-sound decoder with no lighting modifications
Premium Sound Installation: ESU LokSound 5 sound decoder with our Custom EDI GT46C-ACe Class Sound Project
Premium Sound Installation and Light Modification: Upgrade to 8 Function lighting outputs with the DCC Solutions Light Modification to separate all lighting for individual function control on your DCC throttle, plus our ESU LokSound 5 Custom EDI GT46C-ACe Class
