Inc Sound Module Decoder - Manual
© 2017 Digitrax, Inc. 
www.digitrax.com- 74 -
TABLE XX: SDXH166D Sound Scheme Selection with CV60 Example
CV60 
set to
Sound Scheme CV150 set to CV157 set to
0 GP38 Diesel
0= default 1-7= alt horns
128-135 = Playable horns
0=default 1-3 = alt bells
1
GE Evolution 
Diesel
1= default 0-7= alt horns
128-135 = Playable horns
0=default 1-3 = alt bells
2 SD70 Diesel
2= default 0-7= alt horns
128-135 = Playable horns
0=default 1-3 = alt bells
3 GP10 Diesel
3= default 0-7= alt horns
128-135 = Playable horns
0=default 1-3 = alt bells
4 RS1 Diesel
4= default 0-7= alt horns
128-135 = Playable horns
0=default 1-3 = alt bells
5 C420 Diesel
5= default 0-7= alt horns
128-135 = Playable horns
0=default 1-3 = alt bells
6
Steam type 1 (based 
on 3985)
0= default 0-2= alt 
whistles
128-130 = Playable
whistles
0=default 1-3 = alt bells
7
Steam type 2 (based 
on K27)
1= default 0-2= alt 
whistles
128-130 = Playable
whistles
0=default 1-3 = alt bells
11.10 Loading Sound Projects into your SoundFX Decoder
Your sound decoder’s sound project can be changed using a Digitrax PR3 pro-
grammer and your computer with SoundLoader 2.0 software. Both the software 
and a number of alternate sound project files are available from the Digitrax 
Sound Depot web site at no charge. SoundLoader can be used to view sound 
project descriptions, CV uses and function information. 
It takes only a few minutes to download the new sound to your decoder. The 
following tables show the CVs used in SDXH166D and how it is set up at the 
factory to operate various sounds using your throttle. (Table on next page.)
CV60 selects a sound scheme from the sound project (.spj) that is loaded in 
the decoder. Once you have downloaded a project into the decoder, the sound 
scheme is selected by programming a CV and no PR3 or computer is needed 
for selecting a scheme.
Note that each sound project can use CVs in a different way. Please con-
sult the documentation for the specific sound project you are running in 
your decoder to determine how the CVs are used.










