Lionel sound units can sound like that... all it takes is a little willing to work.
Case in point:
Heres a basic TMCC Railsounds FT unit that I used as a test bed; since the Tang Band speakers are 4ohm, I needed to compensate. In this case, below, I used the Tang Band in series with a laptop speaker to get the required resistance and the sound was amazing.
Thanks,
Mario