Hi ravi,
Yes, I do use them on the M80 tweeters because my listening area is only 8 feet from the M80s. It's my experience that the M80s sound their best in a big room or when you can sit about 12 to 20 feet back from them. On the other hand, these things are very room- and taste-dependent.
Another friend of mine in his '20s who has M22ti's heard my M80s and loved them. He was playing current rock/pop CDs at volumes that I've never dared listen at. But I've always used lower listening levels than most of my colleagues.
Regards,
