4-way crossover freqs and slopes

[Robert Wollenberg]

So I'm curious what anybody else has used for slopes and frequencies in a 4-way setup? Subs, Midbass, Midrange, tweets? I've tried quite a few setups so far, and all though it sounds great, I think it could be greater. I feel like I'm just not getting the crossovers right. Mostly in the lower frequencies. Either the midbass seems to be lacking or there's too much sub or not enough sub, or some damn thing. lol.

Anyway, just curious what anybody else might have been successful with.