I also suspect that the 2 chuff was a planned decision, as the electronics would allow for four just as easily. I figure that, as others have said, 2 cuffs sounds better to the average consumer for this level of product, especially at higher speeds. Now if anyone at Lionel is watching this, how about adding the code to allow 2 or 4 chuffs. This could be done without adding any parts by adding the option in the volume control routine. Hold bell and whistle down for several seconds as you do to change the sound volume, then press the announcement button to toggle between 2 and 4 chuffs. All software, no new hardware needed.
On the other hand, no need to make the entry level products compete with the high end stuff.
JGL
