Yes, 5 ohm resistors are on the board and 2 ohm resistors should be added at the tweeters!

I believe the other posting where you thought the poster used 20 ohm resistors just appeared that way, but he accidently enlarged the O on ohms, so it read like 2Ohms rather than 2ohms. 2 ohm resistors should be the value to start off with, you can go up or down from there! Look forward to hearing how they come out!

Ed Frias
EFE TECHNOLOGY Speakers