http://www.youtube.com/watch?v=4yHkmNwE ... re=related
I'm not sure if that has been posted here, but I've never heard a Whelen sound like that. Its definitely a low-tone variant of the 1980's era tone generators. However, if you notice, its not at all the same as the early 1990's Whelens, which use a yet lower version of that tone. Compare here:
http://www.youtube.com/watch?v=bg99MtxFoEA
Just a point of interest, I thought.