I do Classic Rock and Country, don't tap or slap, and play Pbasses, 55-94, Zon 519 (with flats). If I am looking to have a cab built (sheesh, and I thought basses were addictive), why do I need a horn or tweeter? Actually, why would I need a 15/6 or 12/5? Why not just a 15 & 10, or 12 & 10 or even just a sub? Looking at some manufacturer sites, a sub 15 or sub 12 might even be less costly. So why have the added cost, complexity and weight for highs?