Going active is expensive. lol
You need amps to run the speakers from, then a processor of some sort, like the rockford fosgate 360.2 or 360.3,Alpine Imprint, Audison Bit1 or bit10, and so many more other brands. but it gets expensive!
If you check the specs of the tweeters you have, you will see the frequency response for the tweeters are 5,000 Hz - 22,000 Hz, and the bass blockers you linked only block 2800hz and lower at 4 ohms. Meaning there will be a big gap of frequency that can still get thru and damage the tweeters since the tweeters response is only 5000hz and up.
you would want to go with these bassblockers to protect the tweeters the best.
http://www.sonicelectronix.com/item_24358_PAC-BB-6PR-Black.html
sweeeet. ill probably get those, would you be able to tell my why bass blockers arent as good? ive been playing the stereo without them, my tweeters still work i just hope i didnt fuck them up to bad already