Bachmann does not make a sound decoder, and I don't think they sell the Tsunami sound decoder as an add-on part.
DCC equipped does not mean you have sound in the engine.
What decoder did you use that you say is a Bachmann sound decoder? Unless it had a speaker attached, it is not a sound decoder.
From your descriptions, it seems to me that neither locomotive has sound.
Select the engine, hit function, then button 8. On most engines, 8 will turn the sound on and off. I ran my E-Z for 3 years, and it ran all the decoders sound systems I have.
Cuda Ken
I hate Rust
Well, since the details are lacking I'll just have to make a stab at it. Do you get lights when pressing address 10? For sound: You have to press the red yellow function button before pressing the address buttons that double as function buttons. F8 (mute) may also be turned off.
That's the best I can do...
Tom
https://tstage9.wixsite.com/nyc-modeling
Time...It marches on...without ever turning around to see if anyone is even keeping in step.
This is going to be a tough one. No message either.
Rich
If you ever fall over in public, pick yourself up and say “sorry it’s been a while since I inhabited a body.” And just walk away.