As an old LaScala owner I know exactly what your hearing. That sound is never going to go completely away. There are ways to help.
I agree with the above coments regarding amps. But also consider this. (Maybe you've already done this)
Clean internal connections in the speaker.
Possibly rewiring with better cable.
Choice of speaker wire is important.
Clean power will also dramatically smooth out the sound. There is so much junk on the AC, it's severly magnified by a speaker with that sensitivity.
If you're using CD as a source, look into a tube CD player.
I agree with the above coments regarding amps. But also consider this. (Maybe you've already done this)
Clean internal connections in the speaker.
Possibly rewiring with better cable.
Choice of speaker wire is important.
Clean power will also dramatically smooth out the sound. There is so much junk on the AC, it's severly magnified by a speaker with that sensitivity.
If you're using CD as a source, look into a tube CD player.