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Auscision 48 Class DCC Sound Installation

with Lighting Modifications

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

About the NSW 48 Class Locomotive

The 48 Class diesel electric locomotives were built by A.E Goodwin, Auburn for the NSW Government Railways in four production batches (or mark versions)  between September 1959 and October 1970. They were built under the ALCO DL531 model with the largest number of 165 units built for NSW, 44 units built for the South Australian Government Railways 830 Class which operated services throughout SA on the narrow, standard and broad gauge lines. A further 3 narrow gauge examples were purchased by Silverton Rail for use on the Silverton Tramway Line around Broken Hill.


There were four versions built for the NSWGR were:

  • Mark 1: 4801 – 4845 (September. 1959 to March 1962)
  • Mark 2: 4846 – 4885 (June 1964 to September 1965)
  • Mark 3: 4886 - 48125 (March 1966 to July 1968)
  • Mark 4: 48126 – 48165 (January 1969 to October 1970)

The NSWGR 48 Class was ordered to commence the conversion of branch lines to dieselisation and to see if branch line operating costs could be reduced. They became an immediate success and by the early 1960's the heaviest trains in NSW were being hauled by multiply 48 class locomotives. They later went on to become the backbone to the NSW Fleet.

As well as branch lines they operated both mainline and metropolitan services and were seen on every line in the state. Aside from a couple written off after accidents in the mid-1980s, withdrawals didn't commence until August 1994. Others have been withdrawn since and as at January 2014, 66 units still remained in service as an extremely simple and reliable locomotive capable of performing any duty. Of the other 99 units, 7 have been preserved, 29 stored, 63 scrapped.

DCC with Customised 48 Class Sound 
Something you won't get with OEM Sound from the manufacturers

In June 2018, Auscision released their version of the 48 Class locomotive which includes a 21 Pin socket for easily fitting a DCC decoder plus a speaker enclosure that suits a 16 x 35 mm speaker. There are micro switches under the model for turning lights on/off in DC and DCC.

For a sound installation we highly recommend the ESU LokSound V4.0 which includes a completely custom built sound project by DCC Solutions that contains recorded sounds with customised sound programming plus extra features, including Full Throttle, and with our usual lighting modifications it will make your NSW 48 Class Auscision model a uniquely, impressive driving and sounding loco that will turn heads!

For those not wanting sound, then the LokPilot V4.0 (No Sound) would be our recommendation.


Alternatively you may wish to choose another brand of decoder as we offer several different DCC installation options for this model to suit all budgets and can also supply decoders for the DIY Installers.

We have tweaked the motor control of the ESU decoder to provide super slow smooth speeds at steps 1-8 of 128 (Speed step 1 of 28) which is perfect for shunting operations allowing the loco to move ever so slowly towards its rolling stock. Also for those wanting the locomotive to move off slowly and build up speed like the prototype. You will be impressed with the smooth slow speed motor control.

Our Custom 48 Class Sound Project offers a light modification for this 48 Class model to separate the light operation for a more prototypical operation.
You will have complete control at the press of a button on your DCC controller, for greater flexibility as to what lights you want switched on depending on how you are running your 48 Class Locomotive and providing you with a more realistic operation.

Factory Lighting

Aftermarket decoders will operate the lighting as follows: 

1) Front Headlight, Number Boards, White Markers and Rear Red Markers on/off when travelling forward with the headlight button.

2) Rear Headlight,Number Boards, White Markers and Front Red Markers on/off when travelling in reverse with the headlight button.

With the addition of 3 micro switches, under the fuel tank on this model, you can physically switch off the headlights, white markers/numberboards and red makers at both ends of the model which still doesn't provide the right lighting options. 

DCC Solutions Lighting

1) Front Headlight - on/off directionally with the headlight button

2) Rear Headlight - on/off directionally with the headlight button

3) Front Headlight - on/off only with 1 function button

4) Front White Markers - on/off with 1 function button

5) Front Red Markers - on/off with 1 function button

6) Rear White Markers - on/off with 1 function button

7) Rear Red Markers - on/off with 1 function button

8) Front Number Boards - on/off with 1 function button

9) Rear Number Boards - on/off with 1 function button

Just imagine having your 48 Class Locomotive sitting in a yard or siding with just the Number Boards switched on or even just the front and rear red markers as per NSW rail practice.

Now you can operate the lights on your model locomotive just like the real thing! 

We have an created a custom built sound project for the 48 Class with the correct recorded sounds of the ALCO 6-251B engine and now with our lighting options you can finally own a great sounding 48 Class with a more prototypical lighting beyond what you ever thought of owning.

The DCC Solutions NSW 48 Class Custom Built Sound Project
ALCo 6-251B 
is packed with sounds and features not found elsewhere!

Our Custom Sound Project now includes these new features:

Full Throttle – Drive Hold

This feature allows you to simulate a loaded or empty 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. This exciting, new feature gives the operator the ability to have the train crawl in notch 8 or coast at 100 km/h. Release the Drive Hold function button and you simply go back to throttle-controlled speed and motion. With our own version of drive hold, your loco will stop when you reduce the speed to zero whilst the drive hold function is still active. This is something that won't happen with other versions offering this feature.

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 it 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 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 and the sound will exit and return to whatever speed is 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. Our brake will also stop your loco even if you have left the "Full Throttle Drive Hold" function on.  Release the brake and your locomotive will move off again or choose to have it remain stationary when the brake is released.

Random Start-up sequences with Move Off and Stopping Sounds

Our Custom Sound Project won't let you hear the same old start up and shut down sounds every time you run your 48 Class Loco. Now with random start-up sequences including hot or cold engine starts 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 Sounds
New remastered playable and short blast horns including NSWGR WABCo A/B Series, RVB Hurricane 3 Chime, RVB Hurricane 5 Chime, Twin RVB Hurricane 5 Chime and Westinghouse-WABCo Single A/B
Coupling and Release with Shunting Mode
Activate coupling or release and your loco will automatically reduce it's speed to allow for for a more realistic coupling or release operation. Once the operation is completed your loco will continue to run at slow speed for a few more seconds before returning to the speed set on your throttle.

And includes all these great features to make your Auscision 48 Class uniquely drive and sound impressive

  • ALCO 6-251B Turbo Prime Mover
  • 48 Class Short Blast and Playable Horn. NSWGR WABCo Pneuphonic type A/B airhorns, NSWGR RVB Hurricane 5 chime airhorns
  • Additional Horns: NSWGR RVB Hurricane 3 chime airhorns, NSWGR Twin RVB Hurricane 5 chime airhorns
  • Random Start-up sequences including Automatic Hot or Cold Engine Start.
  • Air and Brake Release Sounds when loco moves off and stops including Brake Squeal.
  • When the loco stops after braking the compressor cuts in to fill the reservoir and will turn off when the tanks are full.
  • Speed sensitive Wheel Squeal and Rail Noise when the loco moves off.
  • Full Throttle Drive Hold - Lock the loco speed and control the sound independently to simulate a heavy loaded or empty train
  • Coasting On Demand
  • Working Brake Function 
  • Brake Squeal on Deceleration that slows up your loco.
  • Directional Coupling and Release with brake line release plus auto active shunting mode to reduce the speed of the loco for shunting
  • Stop & Drive Random Sounds including fans, compressor, rail noise, track wheel squeal, air releases and more!
  • Wheel Squeal
  • Guard's Whistle
  • Modified Lighting Options for more prototypical light operation, with up to 9 Light Functions
  • Low beam/High beam Headlights
  • And more (See function mapping list below)
  • Motor settings and sound volumes tuned to specifically suit the Auscision 48 Class Locomotive Model.
  • Individual sounds slots and the master sound volumes can be adjusted by the user for increased volumes to suit personal requirements.
  • Full function button remapping to suit your personal requirements.
  • This Sound Project is also suitable for other brands of 48 Class Models.


Standard DCC Installation: Non sound decoder with Standard Lighting.

Standard Sound Installation: ESU Select decoder with ESU factory generic sounds with Standard Lighting.

Premium Sound Installation: ESU LokSound V4.0 sound decoder with our Custom built ALCO 6-251B Sound Project with Standard Lighting.

Premium Sound Installation and Light Modification: With Function lighting options to separate Front and Rear Headlights,Front and Rear White Markers, Front and Rear Red Markers and Front and Rear Number Boards to have individual function control on your DCC controller plus our ESU V4.0 Custom built ALCO 6-251B Sound Project which has been specifically set up to suit the Auscision 48 Class HO model.

Here is the selection of sound and function labels using the ESU V4.0 sound decoder


Premium Sound Installation and Light Modification

Function                   Description   
      0  (HEADLIGHT)           Directional Headlights Only

      1                             Full Throttle Drive Hold

      2  (HORN)                   NSWGR WABCo A/B Series Playable Horn

      3                             NSWGR WABCo A/B Series Short Blast

      4                             Dynamic Brake Logic for Consisting

      5                             Coasting On Demand

      6                             Brake

      7                             Shunting Mode - Reduces Speed 50%               

      8                             Start Up/Shut Down/Mute

      9                             Front White Markers

    10                             Rear Red Markers

    11                             Rear White Markers 

    12                             Front Red Markers

    13                             Front Number Boards

    14                             Rear Number Boards

Function                   Description
    15                             Fan 

    16                             Compressor

    17                             Coupling and Release + Shunting Mode

    18                             Wheel Squeal

    19                             NSWGR Guard's Whistle

    20                             Volume Control (+/-) Double Key Press

    21                             Volume Fader - Reduces Sound 50%

    22                             Headlight High Beam On/Off

    23                             Cab Door Open/Close

    24                             Sanding Valve

    25                             Directional Headlights, Markers, Number Boards

    26                             Short Air Release

    27                             Front Headlight On/Off

    28                             Disable Start Off and Stopping Sounds

Note: The above functions are for the LokSound V4.0 Decoder programmed with DCC Solutions Premium Custom Sound Installation with Light Modifications.
The functions and sounds will be different for another brands of decoders.  To learn how to use the functions beyond F9 see the Info & Help page. 
All functions can be reprogrammed to suit your own personal requirements.

FUNCTION MAPPING for the Non Sound ESU LokPilot V4.0 Decoder
Note: Non Sound mapping matches the Sound Mapping so both decoders will work the same.
      Function               Description   
      0  (HEADLIGHT)          Directional Headlights Only

      1                             Full Throttle Drive Hold



      4                             Dynamic Brake Logic for Consisting



      7                             Shunting Mode - Reduces Speed 50%      

      8                             Virtual Drive Sound (When Runnning with Sound Locos)

      9                             Front White Markers

    10                             Rear Red Markers

    11                             Rear White Markers 

    12                             Front Red Markers

    13                             Front Number Boards

    14                             Rear Number Boards

   Function                Description   







    22                             Dimmer



    25                             Directional Headlights, Markers, Number Boards


    27                             Front Headlight On/Off


Note: The above functions are for the LokPilot V4.0 Decoder programmed with DCC Solutions Premium Non Sound Installation with Light Modifications.
The functions will be different for another brands of decoders.  To learn how to use the functions beyond F9 see the Info & Help page. 
All functions can be reprogrammed to suit your own personal requirements.

Options Available                                                 

ESU LokSound V4.0 Sound Decoder programmed with DCC Solutions Custom Built 48 Class Sound Project

ESU LokSound Select Sound Decoder programmed with ESU generic downloadable sound file

ESU LokPilot V4.0 (Non Sound Decoder)

Alternative brands of Sound and Non Sound Decoders of your choice.

Supply only Decoders and Speakers for DIY Installations