Steve,
Thanks for explaining this.... I guess I really got used to the tweeters on my old MZ-2000 (boy those were great!) What you're saying makes sense where depending on the voice and so forth on how the tweeters respond. Well my 550 is out of warranty, and I'm good at taking things apart and putting them back together.... Maybe I'll take a look in that baby Oh Steve..., how common are the disk drives in the PSR's that use direct disk recording? If my drive fails can I replace it with a standard floppy drive or does Yamaha use something different as far as the connections are concerned???

Squeak