I received a new Lionel CSX SD70Ace today (I know . . . Sunday delivery??) and I started it up from about 40 feet away and behind an 8' high plywood divider. I was at the controls for the layout where the Legacy base is. The sound I heard from the new locomotive was the most amazing and most realistic diesel horn I have ever heard from a model and that was from behind the divider. Next to the model I thought it sounded exactly like what I hear trackside.
I sent an e-mail to Dave Olsen to ask him if there is a new recording or a new baffle design for the speaker in the loco. If not, those hot peppers I had for dinner made the loco sound 3D !!!
Scrappy