I am guessing your Screamers are this version;

MRII594A horn with 291 driver on top and dual 604's stacked below it, fiberglass covered cabinet with front cover, and casters.

I helped install a generic three-way crossover in a pair of the above Screamers. The big problem is the 291 needs to be padded down to match levels. I added a couple of the 30W adjustable pads found in many Altec crossovers . . . Worked!

However, I felt the sound from this speaker was more appropriate for live bands than for hi-fi . . .