I have recently purchased a pair of Bachman 45 ton switchers with DCC on board. In studying the parts explosion page that comes with locos I see that the frame has a location to hold a speaker.
I would appreciate it if anyone could tell me what sound system would be compatible with the locomotive.
I don't think you could have picked a better locomotive than the Bachmann Spectrum 45-tonner. I run mine on DC; and am extremely satisfied with the model. 'No plans on running it on DCC (although I could easily convert my layout). Let us know what your research finds out.
Ray
I'll second the Soundtraxx micro Tsunami suggestion. They could also supply the appropriate speaker.
http://www.soundtraxx.com/dsd/tsunami/750.php
if it's a small layout you could make a sound box!