Thanks for your reply. Do you have some specific advice on 4ohm vs. 8ohm? Minimal sensitivity figures? To be a good match with the 206 8ohm 96db. Is this critical? Because the 206 has a freq. bump around 10k I'm really interested in using a tweeter for like 15k and above with cross over easing it in from around 12k. Does this sound feasable to you? Do you know where I can get some advice on the specific crossovers to use for a specific tweeter to give me only the upper range? Thanks again, Pete