Has anyone tried replacing the factory speaker from a Proto-sound 2, or 3 engine to get a different sound? If so, how did it turn out and what type of speaker did you use? I'm pretty happy with the sounds of PS2 & 3, but I would be happier with a deeper sound for the chuffing. Love the chuffing sound of the MTH Gauge One Hudson, now THAT'S a chuff! I realize I probably can't get it that deep with O-scale, but even a little would be nice.
Nick