I have an Eden WT550 amp and a couple of Avatar 112 cabs with a horn. I like a bright zingy Marcus type of tone for my 5 string Atelier Z Jazz. I get it by having the tweeter at 1/4 on the crossover and then boosting the treble on the Eden amp. I usually have the treble knob (4k ) at 2 o'clock and also boost 10K on the parametric about 5db. Today (it only took me 20 years) it dawned on me that I could also crank the horn all the way and then I wouldn't have to boost the highs on the amp as much. I haven't tried that kind of setting on a gig yet but in my room it sounds really good. I'm not sure which is better. I think the horn cranked and the amp treble back sounds a bit smoother. Have you guys experimented with that? What do you think?