If you’re unsure which prime mover or airhorn(s) were used on a specific locomotive, choosing the right diesel decoder can seem a bit overwhelming. While we can’t identify the exact horn combination used on a particular locomotive on a specific day in history, we can help narrow the options to the sounds most commonly associated with a particular railroad. Keep in mind that many of our prime movers are available in multiple decoder formats.
Selecting the Prime Mover
The term prime mover refers to the diesel engine inside the locomotive. We have many of the most common prime movers found in diesel locomotives. While different locomotive models may share the same prime mover, they can still sound slightly different due to variations in engine mounting, exhaust manifold design, and body construction. To help capture these subtle differences, Tsunami2 and Blunami decoders are equipped with a 7-band equalizer, prime mover pitch shift, echo, and reverb features that allow you to fine-tune the sound and create a more unique locomotive timbre.
Locomotives also vary in their gear ratio design. Some were built with low gearing for yard switching and heavy freight service, while others were geared for higher-speed passenger operations. Tsunami2 and Blunami let you customize locomotive performance with adjustable speed curves, momentum CVs, and top speed settings, allowing operation that more closely matches the prototype.
Some locomotives use multiple prime movers. For example, the ALCO DH-643 was equipped with two 244 prime movers. To better reproduce these locomotives, you may want to consider using a second speaker and increasing the equalizer’s low-frequency response for a fuller sound experience.
Below is a list of prime movers and the decoder product lines in which they are available. Select a prime mover from one of the charts below to view a list of locomotives that used that engine. Please note that Econami Digital Sound Decoders offer a more limited selection of prime movers than Tsunami2 or Blunami. If you cannot find your locomotive contact our Support Team for furhter assistance: (970)259-0690 or support@soundtraxx.com
Prime Movers Available on the EMD Sound Profile:
Tsunami2 & Blunami: EMD 567 No Transition (1st generation)
SW1
SW8
SW600
SW900
TR1
TR2
TR3
TR4
TR5
TR6
GMD1
Tsunami2, Blunami, & Econami: EMD 567 Non-Turbo (1st generation)
F-Units
FT
F3
F7
FP7
CF7
FL9
"Geeps"
GP7
GP18
GP28
SDs
SD7
Switchers
BL1
BL2
Tsunami2 & Blunami: EMD 567 Turbo (1st generation)
"Geeps"
GP20
GP30
GP35
SDs
SD24
SD26
SD35
8-Axle Units
DD35*
DD35A*
*DD35 series locomotives were equipped with two prime movers; we recommend adding a second speaker for further realism if space allows in your particular model.
Tsunami2 & Blunami: EMD Dual 567 (1st generation, non-turbo)
E-Units
E3
E4
E5
E6
E7
E8
E9
Tsunami2 & Blunami: EMD 645 Non-Turbo (2nd generation)
"Geeps"
GP38
GP38-2
GP38AC
SDs
SD38
Switchers
SW1000
MP15
Tsunami2, Blunami, & Econami: EMD 645 Turbo (2nd generation)
F-Units
FP40
F40PH
"Geeps"
GP40
GP40-2
GP40TC
GP40P
GP40P-2
GP40X
GP50
GP15T
GP49
GP50
SDs
SD40
SD40-2
SD45
SD50
SDP40
SD40T-2
SDL45-2
SD45X
Tsunami2 & Blunami: EMD Dual 645 Turbo (2nd generation)
8-Axle Units
DDA40X
Tsunami2, Blunami, & Econami: EMD 710 Turbo (3rd generation)
F-Units
F59PH
F56PHI
F69PH-AC
"Geeps"
GP59
SDs
SD60MAC
SD90
SD90M
SD90MAC
Tsunami2 & Blunami: EMD 710 G3C-T2 (3rd generation)
SDs
SD70ACe
SD70M-2
Prime Movers Available on the EMD-2 Sound Profile:
Tsunami2 & Blunami: EMD 567 12 Cylinder No Transition
Switchers
NW2
NW3
NW5
SW7
SW9
SW1200
Tsunami2 & Blunami: EMD 567C 16 Cylinder Non-Turbo
F-Units
F9
FP9
"Geeps"
GP9
SDs
SD9
Tsunami2 & Blunami: EMD 645E 12 Cylinder Non-Turbo
"Geeps"
GP15-1
GP15AC
Switchers
SW1500
SW1504
MP15AC
MP15DC
Tsunami2 & Blunami: EMD 645E 12 Cylinder Turbo
"Geeps"
GP39
GP39-2
SDs
SD39
SDL39
Tsunami2 & Blunami: EMD 645F 16 Cylinder Turbo
"Geeps"
GP40X
GP50
SDs
SD40X
SD50
Tsunami2 & Blunami: EMD 645E 20 Cylinder Turbo
F-Units
F45
FP45
SDs
SD45
SD45X
SD45-2
SDP45
SD45T-2
Tsunami2 & Blunami: EMD 710G 12 Cylinder
F-Units
F59PH
F59PHI
"Geeps"
GP59
Tsunami2 & Blunami: EMD 710G 16 Cylinder
"Geeps"
GP60
GP60M
GP60B
SDs
SD60
SD60M
SD60I
SD60F
SD70
SD70M
SD70I
SD70ACU
SD70MAC
SD70M-2
SD75I
SD75M
Find your ALCO Locomotive in the list below and then click on its corresponding number in the list below to find the Prime Mover, CV setting, and decoder formats available.
- C-420: Click on #4 below
- C-424: Click on #7 below
- C-424M: Click on #4 below
- C-425: Click on #7 below
- C-430: Click on #7 below
- C-628: Click on #7 below
- C-630: Click on #0 below
- C-636: Click on #7 below
- C-855: Click on #7 below
- C-855B: Click on #7 below
- DH-643: Click on #4 below
- DL-105: Click on #0 below
- DL-107: Click on #0 below
- DL-108: Click on #0 below
- DL-109: Click on #0 below
- DL-110: Click on #0 below
- FA-1, FB-1: Click on #2 below
- FA-2, FB-2: Click on #2 below
- FPA4, FPB4: Click on #2 below
- HH-600: Click on #3 below
- M-420: Click on #4 below
- M-630: Click on #7 below
- PB2: Click on #2 below
- RS-1: Click on #2 below
- RS-2: Click on #2 below
- RS-3: Click on #2 below
- RS-10: Click on #2 below
- RS-11: Click on #4 below
- RS-18: Click on #4 below
- RS-23: Click on #3 below
- RS-27: Click on #7 below
- RS-32: Click on #4 below
- RS-36: Click on #4 below
- RSC-1: Click on #0 below
- RSC-2: Click on #2 below
- RSC-3: Click on #2 below
- RSC-13: Click on #0 below
- RSC-24: Click on #2 below
- RSD-1: Click on #0 below
- RSD-4: Click on #2 below
- RSD-5: Click on #2 below
- RSD-7: Click on #2 below
- RSD-12: Click on #4 below
- RSD-15: Click on #7 below
- RSD-17: Click on #7 below
- RSD-35: Click on #3 below
- S-1: Click on #1 below
- S-2:Click on #0 below
- S-3: Click on #1 below
- S-4: Click on #0 below
- S-5: Click on #3 below
- S-6: Click on #3 below
- S-7: Click on #0 below
- S-10: Click on #0 below
- S-11: Click on #4 below
- S-12: Click on #1 below
- S-13: Click on #3 below
#0 - ALCO 539 Turbo
For this model you will want to use the 539 Turbo prime mover found on the ALCO sound profile. It is avaialble in the following board formats:
Tsunami2
Choose the ALCO Sound Profile when adding the product to your cart.
Blunami
Choose the ALCO Sound Profile when adding the product to your cart.
| Board Format | Part Number | Scale |
| 885603 | N - HO | |
| 885607 | HO | |
| 885611 | HO | |
| 885615 | HO | |
| 885619 | O -G |
Click on the board format above to learn more about the decoder or to add it to your cart. To see the other sounds available on this sound profile, refer to the Sound Selection References in the Manuals section of our website.
#1 - ALCO 539 Non-Turbo
For this model you will want to use the 539 Non-Turbo prime mover found on the ALCO sound profile. It is avaialble in the following board formats:
Tsunami2
Choose the ALCO Sound Profile when adding the product to your cart.
Blunami
Choose the ALCO Sound Profile when adding the product to your cart.
| Board Format | Part Number | Scale |
| 885603 | N - HO | |
| 885607 | HO | |
| 885611 | HO | |
| 885615 | HO | |
| 885619 | O - G |
Click on the board format above to learn more about the decoder or to add it to your cart. To see the other sounds available on this sound profile, refer to the Sound Selection References in the Manuals section of our website.
#2 - ALCO 244
For this model you will want to use the 244 prime mover found on the ALCO sound profile.It is avaialble in the following board formats:
Tsunami2
Choose the ALCO Sound Profile when adding the product to your cart.
Blunami
Choose the ALCO Sound Profile when adding the product to your cart.
| Board Format | Part Number | Scale |
| 885603 | N - HO | |
| 885607 | HO | |
| 885611 | HO | |
| 885615 | HO | |
| 885619 | O - G |
Econami
Choose the ALCO Sound Profile when adding the product to your cart.
| Board Format | Part Number | Scale |
| 882006 | HO | |
| 882004 | HO |
Click on the board format above to learn more about the decoder or to add it to your cart. To see the other sounds available on this sound profile, refer to the Sound Selection References in the Manuals section of our website.
#3 - ALCO 251 I6
For this model you will want to use the 251 i6 prime mover found on the ALCO sound profile.It is avaialble in the following board formats:
Tsunami2
Set CV 123 to 3.
Blunami
Choose the ALCO Sound Profile when adding the product to your cart.
| Board Format | Part Number | Scale |
| 885603 | N - HO | |
| 885607 | HO | |
| 885611 | HO | |
| 885615 | HO | |
| 885619 | O - G |
Click on the board format above to learn more about the decoder or to add it to your cart. To see the other sounds available on this sound profile, refer to the Sound Selection References in the Manuals section of our website.
#4 - ALCO 251 V12
For this model you will want to use the 251 V12 prime mover found on the ALCO sound profile. It is avaialble in the following board formats:
Tsunami2
Set CV 123 to 4.
Blunami
Choose the ALCO Sound Profile when adding the product to your cart.
| Board Format | Part Number | Scale |
| 885603 | N - HO | |
| 885607 | HO | |
| 885611 | HO | |
| 885615 | HO | |
| 885619 | O - G |
Click on the board format above to learn more about the decoder or to add it to your cart. To see the other sounds available on this sound profile, refer to the Sound Selection References in the Manuals section of our website.
#5 - ALCO 251 V12 Super Charged
For this model you will want to use the 251 V12 Super Charged prime mover found on the ALCO sound profile. It is avaialble in the following board formats:
Tsunami2
Set CV 123 to 5.
Blunami
Choose the ALCO Sound Profile when adding the product to your cart.
Set CV 123 to 5 or Select 251 V12 Super Charged from the menu.
| Board Format | Part Number | Scale |
| 885603 | N - HO | |
| 885607 | HO | |
| 885611 | HO | |
| 885615 | HO | |
| 885619 | O - G |
Click on the board format above to learn more about the decoder or to add it to your cart. To see the other sounds available on this sound profile, refer to the Sound Selection References in the Manuals section of our website.
#6 - ALCO 251 V12 Century
For this model you will want to use the 251 V12 Century Series prime mover found on the ALCO sound profile. It is avaialble in the following board formats:
Tsunami2
Set CV 123 to 6.
Blunami
Choose the ALCO Sound Profile when adding the product to your cart.
Set CV 123 to 6 or Select 251 V12 from the menu.
| Board Format | Part Number | Scale |
| 885603 | N - HO | |
| 885607 | HO | |
| 885611 | HO | |
| 885615 | HO | |
| 885619 | O - G |
Click on the board format above to learn more about the decoder or to add it to your cart. To see the other sounds available on this sound profile, refer to the Sound Selection References in the Manuals section of our website.
#7 - ALCO 251C V16
For this model you will want to use the 251C V16 prime mover found on the ALCO sound profile.It is avaialble in the following board formats:
Tsunami2
Set CV 123 to 7.
Blunami
Choose the ALCO Sound Profile when adding the product to your cart.
Set CV 123 to 7 or Select 251C V16 from the menu.
| Board Format | Part Number | Scale |
| 885603 | N - HO | |
| 885607 | HO | |
| 885611 | HO | |
| 885615 | HO | |
| 885619 | O - G |
Click on the board format above to learn more about the decoder or to add it to your cart. To see the other sounds available on this sound profile, refer to the Sound Selection References in the Manuals section of our website.
#8 - ALCO 251 V16 Super Charged
For this model you will want to use the 251C V16 Super Charged prime mover found on the ALCO sound profile. It is avaialble in the following board formats:
Tsunami2
Set CV 123 to 8.
Blunami
Choose the ALCO Sound Profile when adding the product to your cart.
Set CV 123 to 8 or Select 251C V16 Super Charged from the menu.
| Board Format | Part Number | Scale |
| 885603 | N - HO | |
| 885607 | HO | |
| 885611 | HO | |
| 885615 | HO | |
| 885619 | O - G |
Click on the board format above to learn more about the decoder or to add it to your cart. To see the other sounds available on this sound profile, refer to the Sound Selection References in the Manuals section of our website.
Find your GE Locomotive in the list below and then click on its corresponding number in the list below to find the Prime Mover, CV setting, and decoder formats available.
GE "Universal Series"
-
- U23B: Click on #0 below
- U23C: Click on #0 below
- U25B: Click on #1 below
- U25C: Click on #1 below
- U26C (export): Click on #0 below
- U28B: Click on #1 below
- U28C: Click on #1 below
- U28B: Click on #1 below
- U30B: Click on #1 below
- U30C: Click on #1 below
- U33B: Click on #1 below
- U33C: Click on #1 below
- U36B: Click on #1 below
- U36C: Click on #1 below
- U50: Click on #3 below
GE "Dash 7" Line
-
- B23-7: Click on #0 below
- BQ23-7: Click on #0 below
- C30-7: Click on #1 below
- B30-7: Click on #1 below
- B30-7A: Click on #0 below
- C30-7A: Click on #0 below
- B36-7: Click on #1 below
- C36-7: Click on #1 below
GE "Dash 8" Line
-
- Dash 8-32B: Click on #0 below
- Dash 8-32C: Click on #0 below
- P32-8WH: Click on #0 below
- P32AC-DM: Click on #0 below
- Dash 8-39B: Click on #1 below
- Dash 8-39C: Click on #1 below
- Dash 8-40B: Click on #1 below
- Dash 8-40BW: Click on #1 below
- Dash 8-40C: Click on #1 below
- Dash 8-40CW: Click on #1 below
- Dash 8-40CM: Click on #1 below
- Dash 8-41CW: Click on #1 below
- Dash 8-44CW: Click on #1 below
GE "Dash 8" Line
-
- Dash 8-32B: Click on #0 below
- Dash 8-32C: Click on #0 below
- P32-8WH: Click on #0 below
- P32AC-DM: Click on #0 below
- Dash 8-39B: Click on #1 below
- Dash 8-39C: Click on #1 below
- Dash 8-40B: Click on #1 below
- Dash 8-40BW: Click on #1 below
- Dash 8-40C: Click on #1 below
- Dash 8-40CW: Click on #1 below
- Dash 8-40CM: Click on #1 below
- Dash 8-41CW: Click on #1 below
- Dash 8-44CW: Click on #1 below
GE "Dash 9" Line
-
- Dash 9-40C: Click on #2 below
- Dash 9-40CW: Click on #2 below
- Dash 9-44CW: Click on #2 below
Industrial Switch engines & RDCs
-
-
- 44-Tonner: Click on #5 below
- 45-Tonner: Click on #5 below
- Light Dual Engine Industrial Switchers: Click on #5 below
- 70-Tonner: Click on #6 below
- Light Single Engine Industrial Switchers: Click on #6 below
- Diesel Rail Cars: Click on #6 below
-
GE "AC"
-
-
-
- AC4400CW: Click on #2 below
- AC6000CW: Click on #2 below
-
-
GE "Genesis" Series
-
-
-
-
- P40DC: Click on #2 below
- P42DC: Click on #2 below
-
-
-
GE Passenger
- P30CH: Click on #1 below
- U34CH: Click on #1 below
"Evolution" Series
- ES40DC: Click on #4 below
- ES44AC: Click on #4 below
- ES44DC: Click on #4 below
- ES44C4: Click on #4 below
- ET44AC: Click on #4 below
- ET44C4: Click on #4 below
GE Passenger
- P30CH: Click on #1 below
- U34CH: Click on #1 below
- U28CG: Click on #1 below
- U30CG: Click on #1 below
- U36CG: Click on #1 below
Tier 4 GEVO
- GE ET44AC: Click on #7 below
#0 - Tsunami2 & Blunami: GE FDL-12
For this model you will want to use the GE FDL-12 prime mover found on the GE sound profile. It is avaialble in the following board formats:
Tsunami2
Set CV 123 to 0.
Blunami
Choose the GE Sound Profile when adding the product to your cart.
| Board Format | Part Number | Scale |
| 885602 | N - HO | |
| 885606 | HO | |
| 885610 | HO | |
| 885614 | HO | |
| 885618 | O - G |
Click on the board format above to learn more about the decoder or to add it to your cart. To see the other sounds available on this sound profile, refer to the Sound Selection References in the Manuals section of our website.
#1 - Tsunami2, Blunam & Econami: GE FDL-16
For this model you will want to use the GE FDL-16 prime mover found on the GE sound profile. It is avaialble in the following board formats:
Tsunami2
Choose the GE Sound Profile when adding the product to your cart.
Blunami
Choose the GE Sound Profile when adding the product to your cart.
| Board Format | Part Number | Scale |
| 885602 | N - HO | |
| 885606 | HO | |
| 885610 | HO | |
| 885614 | HO | |
| 885618 | O - G |
Econami
Choose the GE Sound Profile when adding the product to your cart.
| Board Format | Part Number | Scale |
| 882006 | HO | |
| 882004 | HO |
Click on the board format above to learn more about the decoder or to add it to your cart. To see the other sounds available on this sound profile, refer to the Sound Selection References in the Manuals section of our website.
#2 - Tsunami2 & Blunami: GE 7FDL-16
For this model you will want to use the GE 7FDL-16 prime mover found on the GE sound profile. It is avaialble in the following board formats:
Tsunami2
Set CV 123 to 2.
Blunami
Choose the GE Sound Profile when adding the product to your cart.
| Board Format | Part Number | Scale |
| 885602 | N - HO | |
| 885606 | HO | |
| 885610 | HO | |
| 885614 | HO | |
| 885618 | O - G |
Click on the board format above to learn more about the decoder or to add it to your cart. To see the other sounds available on this sound profile, refer to the Sound Selection References in the Manuals section of our website.
#3 - Tsunami2 & Blunami: GE Dual FDL-16
For this model you will want to use the GE Dual FDL-16 prime mover found on the GE sound profile. It is avaialble in the following board formats:
Tsunami2
Set CV 123 to 3.
Blunami
Choose the GE Sound Profile when adding the product to your cart.
| Board Format | Part Number | Scale |
| 885602 | N - HO | |
| 885606 | HO | |
| 885610 | HO | |
| 885614 | HO | |
| 885618 | O - G |
Click on the board format above to learn more about the decoder or to add it to your cart. To see the other sounds available on this sound profile, refer to the Sound Selection References in the Manuals section of our website.
#4 - Tsunami2 & Blunami: GE GEVO G12
For this model you will want to use the GE GEVO G12 prime mover found on the GE sound profile. It is avaialble in the following board formats:
Tsunami2
Set CV 123 to 4.
Blunami
Choose the GE Sound Profile when adding the product to your cart.
| Board Format | Part Number | Scale |
| 885602 | N - HO | |
| 885606 | HO | |
| 885610 | HO | |
| 885614 | HO | |
| 885618 | O - G |
Click on the board format above to learn more about the decoder or to add it to your cart. To see the other sounds available on this sound profile, refer to the Sound Selection References in the Manuals section of our website.
#5 - Tsunami2 & Blunami: GE 44-Ton Center Cab Dual Caterpillar
For this model you will want to use the GE 44-Ton Center Cab Dual Caterpillar found on the GE sound profile. It is avaialble in the following board formats:
Tsunami2
Set CV 123 to 5.
Blunami
Choose the GE Sound Profile when adding the product to your cart.
| Board Format | Part Number | Scale |
| 885602 | N - HO | |
| 885606 | HO | |
| 885610 | HO | |
| 885614 | HO | |
| 885618 | O - G |
Click on the board format above to learn more about the decoder or to add it to your cart. To see the other sounds available on this sound profile, refer to the Sound Selection References in the Manuals section of our website.
#6 - Tsunami2 & Blunami: GE Cummins Switcher
For this model you will want to use the GE Cummins Switcher found on the GE sound profile. It is avaialble in the following board formats:
Tsunami2
Set CV 123 to 6.
Blunami
Choose the GE Sound Profile when adding the product to your cart.
| Board Format | Part Number | Scale |
| 885602 | N - HO | |
| 885606 | HO | |
| 885610 | HO | |
| 885614 | HO | |
| 885618 | O - G |
Click on the board format above to learn more about the decoder or to add it to your cart. To see the other sounds available on this sound profile, refer to the Sound Selection References in the Manuals section of our website.
#7 - Tsunami2 & Blunami: GEVO G12 Tier 4
For this model you will want to use the GEVO G12 Tier 4 found on the GE sound profile. It is avaialble in the following board formats:
Tsunami2
Set CV 123 to 7.
Blunami
Choose the GE Sound Profile when adding the product to your cart.
| Board Format | Part Number | Scale |
| 885602 | N - HO | |
| 885606 | HO | |
| 885610 | HO | |
| 885614 | HO | |
| 885618 | O - G |
Click on the board format above to learn more about the decoder or to add it to your cart. To see the other sounds available on this sound profile, refer to the Sound Selection References in the Manuals section of our website.
Tsunami2 & Blunami: Baldwin VO
Switchers
VO-660
VO-1000
Tsunami2 & Blunami: Baldwin 608NA
Switchers
DS-4-4-1000
Road Units
DR-6-4-2000*
DT-6-6-2000*
*DR-6-4-2000 and DT-6-6-2000 locomotives contain two of the 608NA prime movers; we recommend adding a second speaker for further realism if space allows in your particular model.
Tsunami2 & Blunami: Baldwin 608A
Switchers
DS-4-4-1000*
S-12**
Road Units
DT-6-6-2000*
DRS-6-4-1000*
DRS-4-4-1000*
RS-12**
DRS-6-4-1500***
AS-416
DRS-4-4-1500***
AS-16
DRS-6-6-1500***
AS-616
Cab Units
DR-12-8-1500 “Centipede”***
DR-6-4-2000 “Sharknose”*
DR-6-2-1000*
DR-6-2-1500#
DR-4-4-1500 “Babyface”***
RF-16 “Sharknose”
DR-4-4-1500 “Sharknose”***
*These units were built with a 606SC prime mover that sounds similar to the 608A.
**The S-12 and RS-12 were built with a 606A prime mover that sounds similar to the 608A.
***These units were built with a 608SC prime mover that sounds similar to the 608A.
Tsunami2 & Blunami: Baldwin 606NA
Switchers
DS-4-4-660
DS-4-4-750
S-8
Road Units
DRS-6-4-660NA
DRS-6-4-750
Tsunami2 & Blunami: Rio Grande Southern Galloping Goose
RGS Geese 1-7
Gas Engine Rail Bus
Other Light Industrial Locomotives
Tsunami2 & Blunami: Dual Whitcomb
44-Ton Center Cab
50-Ton Center Cab
65-Ton Center Cab
70-Ton Center Cab
80-Ton Center Cab
Other Light Industrial Locomotives
Tsunami2 & Blunami: Fairbanks-Morse
Switchers & Road Switchers
H-10-44
H-12-44
H-12-44TS
H-12-46
H-15-44
H-16-44
H-16-66
H-20-44
H-24-66
"C-Liners"
CFA-16-4
CFB-16-4
CFA-20-4
CFB-20-4
CPA-16-4
CPB-16-4
CPA-16-5
CPB-16-5
CPB-20-5
CPA-24-5
Cab Units
P12-42
"Erie Built"
Selecting the Airhorn
The most distinctive sound on a diesel locomotive is often the airhorn. Railroads used airhorns not only to warn vehicles and pedestrians, but also to communicate with other trains, yard crews, and train personnel.
One of the great advantages of Digital Sound Decoders and DCC is the ability to reproduce realistic, prototypical horn signals just like the real railroad. Tsunami2, Blunami, and Econami decoders include dedicated functions for both long horn blasts and short horn toots, making accurate signal operation easy and enjoyable. Our decoder families also support automatic signaling features such as forward and reverse signals, public grade crossing sequences, and brakes-applied signals.
To make selecting the right sound easier — and more fun — every diesel Tsunami2 or Blunami Decoder includes over 40 airhorns commonly heard across a wide range of eras and prototypes. Econami Digital Sound Decoders come preloaded with 16 of the most common air horns associated with the prime mover options included in each decoder.
Many railroads used multiple horn types across their locomotive fleets, so there is often more than one “correct” choice for a given locomotive. With the wide variety of airhorns included in Tsunami2, Blunami, and Econami decoders, you are free to experiment and choose the sound that best fits your model railroad. After all, it’s your railroad — choose the horn you enjoy hearing most.
If you would like to follow prototype practices more closely, visit the Locomotive Airhorn Usage page for additional information on which air horns were most commonly used by specific railroads.