"Where Detail Makes the Difference"
- Longmont, Colorado, U.S.A. -
1 (800) 472-2530         Local: (303) 772-1901         Fax: (303) 532-2352

InterMountain ESU OEM Sound Files
& OEM Sound File Function Mapping Tables

NOTE: Loading complete ESU sound and non-sound files into a locomotive requires an ESU LokProgrammer. You'll also need the latest version of the LokProgrammer software available here: LokProgrammer Software.
While it is easier, a LokProgrammer is NOT required for making any CV changes in your LokSound decoder. Any NMRA compliant DCC system can be used to make CV changes.
 
Starting in 2016, most InterMountain locomotives are being shipped with the prime mover sound OFF when track power is applied to the locomotive. Sound files below are listed for both sound ON and sound OFF with track power depending on your preference.
 
We have also included our OEM file for the flashing beacon on some of the HO SD40-2 locomotives.
 
Files for ESU LokSound SELECT Decoders
NOTE: These sound listed here only work on LokSound Select Decoders. LokSound 5 DCC Sound Files
 
91471 - IMRC ESU OEM Sound File - HO Scale Cab Forward
91471 - IMRC HO Scale Cab Forward ESU Complete Function Mapping Table (.pdf) (Decoder Firmware Version 4.17.9249)
 
90486 - Sound OFF with Track Power - IMRC ESU OEM Sound File - HO Scale ET44AC (Tier 4 GEVO)
90486 - IMRC HO Scale ET44AC (Tier 4 GEVO) ESU Complete Function Mapping Table (.pdf)
95433 - Sound OFF with Track Power - IMRC ESU OEM Sound File - HO Scale Canadian National ET44AC (Tier 4 GEVO)
95433 - IMRC HO Scale Canadian National ET44AC (Tier 4 GEVO) ESU Complete Function Mapping Table (.pdf)
 
75438 - Sound OFF with Track Power - IMRC ESU Alternate Sound File - HO Scale ET44AC (Tier 4 GEVO)
75438 - IMRC ESU Alternate HO Scale ET44AC (Tier 4 GEVO) ESU Complete Function Mapping Table (.pdf) - COMING SOON!
75438 - Sound OFF with Track Power - IMRC ESU Alternate Sound File - HO Scale ET44AC Canadian National (Tier 4 GEVO)
75438 - IMRC ESU Alternate HO Scale ET44AC Canadian National (Tier 4 GEVO) ESU Complete Function Mapping Table (.pdf) - COMING SOON!
 
93420 - Sound OFF with Track Power - IMRC ESU OEM Sound File - HO Scale SD40-2(W)
90448 - Sound OFF with Track Power - IMRC ESU OEM Sound File - HO Scale SD40-2(W) with Beacon
93420 - Sound ON with Track Power - IMRC ESU OEM Sound File - HO Scale SD40-2(W)
93420 - IMRC HO Scale SD40-2(W) ESU Complete Function Mapping Table (.pdf)
 
73408 - Sound OFF with Track Power - IMRC ESU Alternate Sound File w/FULL THROTTLE - HO Scale SD40-2(W)
73408 - IMRC HO Scale SD40-2(W) ESU Complete Function Mapping Table (.pdf) for Alternate Sound File w/FULL THROTTLE - COMING SOON!
 
93421 - Sound OFF with Track Power - IMRC ESU OEM Sound File - HO Scale ES44AC/DC
93421 - Sound ON with Track Power - IMRC ESU OEM Sound File - HO Scale ES44AC/DC
93421 - IMRC HO Scale ES44 (GEVO) ESU Complete Function Mapping Table (.pdf)
 
73423 - Sound OFF with Track Power - IMRC ESU Alternate Sound File w/FULL THROTTLE - HO Scale ES44AC/DC
73423 - IMRC HO Scale ES44AC/DC ESU Complete Function Mapping Table (.pdf) for Alternate Sound File w/FULL THROTTLE - COMING SOON!
 
93422 - IMRC ESU OEM Sound File - HO Scale U18B
93422 - IMRC HO Scale U18B ESU Complete Function Mapping Table (.pdf) - COMING SOON!
 
93423 - Sound OFF with Track Power - IMRC ESU OEM Sound File - HO Scale FT/F3/F7/FP7/FP9
93423 - Sound ON with Track Power - IMRC ESU OEM Sound File - HO Scale FT/F3/F7/FP7/FP9
93423 - Sound OFF with Track Power - IMRC F Units ESU Complete Function Mapping Table (.pdf)
93423 - Sound ON with Track Power - IMRC F Units ESU Complete Function Mapping Table (.pdf)
 
73436 - Sound OFF with Track Power - IMRC ESU Alternate Sound File w/FULL THROTTLE - HO Scale FT/F3/F7/FP7/FP9
73436 - IMRC HO Scale FT/F3/F7/FP7/FP9 ESU Complete Function Mapping Table (.pdf) for Alternate Sound File w/FULL THROTTLE - COMING SOON!
 
93427 - IMRC ESU OEM Sound File w/Full Throttle - HO Scale GP10 with Gyra Headlight
93427 - IMRC HO Scale GP10 with Gyra Headlight ESU Complete Function Mapping Table (.pdf)
90471 - IMRC ESU OEM Sound File w/Full Throttle - HO Scale GP10 non-Gyra Headlight
90471 - IMRC HO Scale GP10 non-Gyra Headlight ESU Complete Function Mapping Table (.pdf)
 
 
93820 - IMRC ESU OEM Sound File - N Scale SD40-2
93820 - IMRC N Scale SD40-2 ESU Complete Function Mapping Table (.pdf)
 
Files for ESU LokSound 5 DCC Decoders
NOTE: The sound files listed here only work on LokSound 5 DCC Decoders.
 
S0509 - IMRC ESU Alternate V5 DCC Steam 4-8-8-2 Southern Pacific Cab Forward Sound File - HO & N Scale SP Cab Forward (22.7MB)
S0768 - IMRC ESU Alternate V5 DCC EMD 16-567C 2-Exhaust Non-Turbo Sound File - ALL HO Scale F Units (30.8MB)
S0508 - IMRC ESU Alternate V5 DCC EMD 16-645E3B Turbo Sound File - HO Scale EMD SD40-2 and SD40-2W (31.3MB) -
S0715 - IMRC ESU Alternate V5 DCC GE 12-GEVO Late Exhaust Sound File - HO Scale GE ES44AC / ES44DC (30.4MB)
S0717NG - IMRC ESU Alternate V5 DCC EMD 16-567C 4-Exhaust Non-Turbo Sound File - HO Scale GP10 non-Gyra Headlight (29.4MB)
S0717G - IMRC ESU Alternate V5 DCC EMD 16-567C 4-Exhaust Non-Turbo Sound File - HO Scale GP10 Gyra Headlight (29.4MB)
99474 - IMRC OEM ESU V5 DCC EMD 16-645C 4-Exhaust Non-Turbo Sound File - HO Scale GP16 (30.6MB)
93486 - IMRC OEM ESU V5 DCC GE 12-GEVO-12LDD6-Late Exhaust Sound File - HO Scale ET44AC (Tier 4 GEVO) STANDARD VERSION (31.8MB)
11477 - IMRC OEM ESU V5 DCC GE 12-GEVO-12LDD6-Late Exhaust Sound File - HO Scale ET44AC (Tier 4 GEVO) CN VERSION (31.8MB)
InterMountain Railway Company
P.O. Box 839
Longmont, Colorado
80502-0839