I was thinking about adding a Tweeter (x-over @ 2.5k)to my 2-10 cab. How will this effect the impedence of the cab? Can I use an 8 ohm horn with just a x-over cap? What if I use an L-pad? I want to keep the cab @ 8ohms. (I'm thinking I need to cover the 3k htz - 7k range, the 10s go to about 4k). I found one that says "No x-over needed" that's rated at 400w. It's over 1k ohm @ 1khz and over 20ohm @ 40khz. I'm running 2-4ohm 10s in series (8 ohm), if I paralell the tweeter what happens to the impedence of the cab? Any help would be greatly appreciated. Thanks.