[ I think ] this is the howl I remember from the OT, but who knows what my original memories are anymore :(
http://webspace.webring.com/people/pr/rushyoda/kraytdragon.wav
as a kid I never knew it was supposed be Kenobi vocalising, it kind of worked unconsciously that he was somehow scaring them away.
out of context that original sound is also pretty hokey - possibly in a good way. with the music on top this new effect might be ok. might.