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Tsunami2 Sounds for Challenger Steam Locomotives

Learn how to customize your Tsunami2 Steam Digital Sound Decoder to represent an articulated 4-6-6-4 Challenger type locomotive. Using this Athearn Genesis model, we’ll provide suggestions for the proper whistle, bell, dynamo, fuel type, and exhaust chuff to help tune your model to sound just like the prototype!

SoundTraxx Academy

This year SoundTraxx Academy is July 13th-14th for a limited number of participants. The registration deadline is June 1st. There are only 2 spots left, sign up now to secure your space!



Welcome to SoundTraxx!

SoundTraxx brings new dimensions in digital sound technology to your model railroad. Regardless of your scale or prototype, we have a sound system for you!

If you are unfamiliar with our products, we recommend you visit Choosing the Right Sound System first.


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