For the time being I am going to get a set of new tweeters from mid west speaker repair. I will get them to repair the original driver later if possible.

They have an 8ohm version and a 4 ohm version. I know its a 4Ω impedance speaker but… just want to make sure I should get the 4 ohm versions.

My guess is that some other AR speakers were 8 ohm impedance but had the same size tweeter driver.