Well, that pretty much sums up what I'm hearing. I've been using a Crown DC 300A for mids, my AMC digital 40 wpc amp for highs and a Mackie 1400 for my subs. When I use my 2 Table Tubas I only need about 50 wpc for the subs. All my amps have individual gain controls and I use them. So it seems these drivers aren't going to like each other no matter what I do. I think I really hear an underlap in response. That must be why they sound like two sources of the same signal. I guess It's my turn to decide what avenue to pursue. Smaller B3N woofers and my tweeter line or a single xt25 tweeter for my woofer line. I guess I will have to model a box volume for the Hi-Vi. Do you have any rough ideas for a passive crossover for the Hi-Vi 's and the Dayton Neo's ?