In my Kato SD70 I used an MRC "Sounder" which is a sound-only decoder that is installed along with a regular motion-and-light decoder. At least to me the result is very good, though I did have to use a 1/2" round speaker instead of the 1" one supplied with the Sounder.
Hello Crandell,
a my friend has a SD 70 of Athearn with decoder Lok Sound, but carefully listening to the sounds of these locomotives watching some DVD, solo the sound of Horn me seem enough real the rest do not satisfy me. I will follow Your council having tried tsunami of Soundtraxx. You salute with sympathy - Carlo
The Soundtraxx Tsunami for diesels is an excellent choice, and I think you would probably be happy with the Quantum Sound Revolution decoders for diesels. The QSI Revolution is usually programmed for the prime mover (main engines) of the diesel model, so you can be sure of getting most of the proper sound files. I say most because not all of the sound files are the right ones when you get a sound file group...which is the way it is done as far as I know.
Tsunami or QSI Revolution. I am not an installer, and not an expert, so you may get better answers from some other people here. Good luck!
-Crandell
They are enrolled to me from little and I hope to express to me in the better way in Your language. I have various diesel locomotives some with sound decoder other transforming with DCC and sound. I ask to you: for locomotives SD 70 Mac of Athearn, which it is the sound decoder more appropriated? thanks and a Salute to everyone of You