The Tsunami in the Spectrum engines is a simplified version of the regular Tsunami, in that it doesn't have all the reverb effects or "Fireman Fred" etc. but has all the bells and whistles. There are 8 whistle choices selectable by CV 115. Their website lists which whistle sounds are used but AFAIK doesn't tell you which particular whistle choice 0 or 1 or 2 is so you kinda have to try them all to see which one you like.
http://www.soundtraxx.com/dsd/tsunami/showwistle.php?s=msteam
Can anyone tell me which whistle sounds come with the Tsunami sound in the Bachmann C&O 2-6-6-2s? assume there are 3 types also assume the USRA 6 chime would be one but am curious as to the others....