Mozart composed overtures to his operas, and this CD (Virgin Classics 0-94636-32842-3) has a lot of them. They can be thunderous.

I cranked up the volume here, and listened to how the instruments were separated. They sounded perfectly distinct (including violins and woodwinds) except at very high volume (over 100 dB), which we shouldn't be listening at anyway.

The timbre was very neutral, which is desirable. And that goes all the way across the soundstage, even when in surround modes due to the speakers all being the same.

Grieg's "Piano Concerto in A Minor" (on Virgin Classics 0-94639-13692-6) has one of the most recognized introductions of any piano piece ever composed, and it goes from the highest registers all the way down to the lowest. And, the pianist here - Leif Ove Andsnes - practically pounds the keys through the floor.

The 2515s handled the intense transients beautifully, and the piano sounded very natural. The MiniMe took care of the lowest notes without any problem. No boominess either.

Rachmaninov's Vespers (Virgin Classics 0-94639-13752-7) has chorus without orchestra, so it is a good disc to hear the timbre of voices, and many at the same time.

The 2515's handled this with clarity and detail. I could easily distinguish the various groups (soprano to bass voices), and they didn't sound mushy.

One of the things I like about Baroque music is that it often does not have a huge number of instruments.

For example, on this CD (Virgin Classics 0-94639-13782-4) has tracks where it is just stringed instruments, and they all sounded crisp, with the right amount of edge to give them life, but not so much as to make them harsh in the slightest. Silk dome tweeters are famous for this characteristic.