difference between Kappa Emit series I and series II

I stand corrected, they are planars.. Again ohms is the trick, match the tweeters.  I thought I might have a few of the round ones here.  No luck
I have the Square, 4.5 ohm, There were at least 3 different types of those things.  He has the round ones different again.  There are at least two of those.. I have RM2s I with the AC (FST) upgrades. They had those buttons.  The XO is upgraded too.  

My concern is all 4 blew not weather they were planars or ribbons. 
That model of RM2 you have to be a little careful, They will self destruct if you're not careful. They sound great until they don't...

Happy hunting

Regards

Thanks guys for the input.  I was watching a movie (a lousy old movie called Spawn) that had a lot of high frequency energy during an explosion.  It took out the tweeters and you could actually see tiny trails of smoking coming from them.  I've done some listening since to make sure the mid ribbons sound right and I think they do.  Again, thanks. 

Just so you know OP.. There is something WRONG... It will blow the new driver right back out.. Find the problem first. The amp is oscillating. I just hope it didn’t wipe out the crossover (the high pass). It is a QSO crossover.. Quasi Second Order.. Check the parts or risk spending good money after bed... An ohm meter and a visual inspection of the XO is easy enough...You’ll see if it cooked the cap(s) and inductor/resistor.
The inductor is hand peeled, to match the left to the right.. Brian’s Thing, the two XOs’ probably won’t look the same either... That’s ok they're suppose to be that way..

Parts Express may have something that will work...Drivers and XO parts..

Regards...