I think you can accomplish your goal with these. I have been very happy with the T4 and it really does fit well with typical room response. The back of the room does get down to 25 quite nicely, and I can depend on 30 most places. 35 and up is SOLID anywhere in the room(new RTA to play with). You do not have to buy a "kit", Wayne will be happy to sell you drivers or whatever, and the prices are quite good. I hope you try the crossover. I tweaked around with the crossover and horns a lot, but I ended up going back to the Pi as designed. I do think the Altec horns you have will match nicely though. Crossovers are available at various frequencies. Thomas