I have noticed a couple of things so far. One is I need a setup cd or tone generator for sure The bass seems to be more controlled than before with the tube amp.I'm using a SS MC-2505 for the bottom end and a tube MC-275 for the horns in the Valencias.

I played the Mark Knopfler/Emmy Lou Harris-All the Roadrunning album and it sure sounds sweet. I don't think there is a night and day difference so the old Altec x-over can't be all that bad for as old as it is.

I used the stock split @ 800 HZ. and haven't fooled around with changing it. I think Altec used 800 for a reason so I don't see a big need to fool around with it.

Reading the Rane owners manual is a hoot. They have a sense of humor. Too bad most of the technical stuff is over my head. My peabrain doesn't absorb electronics well I'll figure it out eventually.