Problems with Infinity Prelude MTS mid-range

Well, I have Infinity Prelude Compositions since I think 2002, and I hope these problems don't crop up. I really like them a lot. They're especially good with low powered SET, better still if you can give them just a little more juice. The Cary V12 and Cary 300B are wonderful with the built in sub (25hz). The Primaluna Dialogue One I own also performs well, my brother's Leben CS660 is really a nice match. I always wondered why more people with moderate low-powered amps were not purchasing speakers such as the Prelude Compositions? These speakers cost about $3,400.00 back in 2002. Good luck solving issues, HK sucks for not owning up.

I change MTS for a pair of Tyler Acoustics D1 last year, GREAT DECISION. Didn't missed them.
They had more problems every day, first the mids, then one sub, then...
If you need spare mids or anything, let me know, I can sell them. The only problem is that I live in Ecuador and shipping will be expensive. I have 3 subs, 2 tower and a center speaker.

HI,

Does anyone know the part number for the 3.5" CMMD midrange driver and if they can still be purchased? I'm getting distortion during piano pieces on one of my towers.

Does anyone know if the midrange drivers can be repaired?

Too bad because I really like the sound of these speakers

I could look at mine but it doesn't really matter no one makes them or have any. Almost impossible to find. I have three

I‘ve got the problem with the neomagnet too and it’s pretty depress not to find one in the internet. 

But there is also another problem. Since I had to bring them to my new Appartement the Towers just play with one of the drivers. That’s quite strange. And in both towers the problem is the same. Just this one driver in the middle of each tower is working. 

Is there anybody having an idea what is wrong?

would be great to find help here