Thanks guys.  I was hoping there were no automatic bells & whistles, but figured there was a good chance there were.  I've got other loco's with sound, and have a QSI Quantum Engineer and a BLI DC Master for running them.  I've gone back in time to mostly steam and I've installed QSI sound decoders in a few of my steamers.  I'm an Alco fan as far as diesels go and was hoping for an easy and inexpensive way to get 1 or 2 running on my layout.

I'm thinking of getting some sound value Alco loco's, such as their RS 3.  I operate with standard DC and am wondering about their sounds.  Mainly automatic sounds.  I know I won't be able to blow the horn or ring the bell.  Will the horn blow automatically when I change direction?  Will the bell ring at slow speeds?  All I want is the sound of the Alco prime mover, and of course random air pumps etc.