I just looked at your system, TLS Guy, very impressive! And I do see the Fireface prominently featured in the middle of it all.
Still a loss for the Theils, but I pulled a set of Mirage M1si out of storage and put them back in service.
They're hard to place in the room though, need to be several feet out from the rear wall as they have a full array of drivers on the rear as well as front. You're now greeted by an pretty imposing monolith as soon as you open my front door!
But the sound is great and that's what matters to us fanatics.
I added an SVS sub and was surprised that the soundstage noticeably widened. Major difference which is very obvious when switched in and out. Never realized this was a benefit of subs, but I did a little research and it turns out there is a logical explanation.
Wasn't aware how good these speakers could sound, Maybe I wan't pairing with the right amp before.
Proabably gonna sell the Theils for cheap as I'm satisfied with the current setup and I don't have time to fix them.
I'm not surprised you can not repair or replace those midrange units. Rather than sell the whole speakers, I would just remove the drivers and crossovers and sell them. I think that will be an easier sell, and save a lot of shipping costs.
Honestly I have heard those Thiels a number of times. I was not really impressed. The worst feature was the tubby bass, that shows up in measurements.
Also I did not like the high end either. With the first order filter, the mid is clearly driven into break up range, and the tweeter is peaking still within the audio band.
All this can be seen in published measurements and confirmed my listening impressions.
I have not heard those Mirage Di-poles. They measure better then the Thiels. I have experimented with Di-poles in the past. I was not enamored with the results.
There is no easy answer to this. Di-poles are still not omnidirectional radiators. Whilst string instruments are omnidirectional radiators, the brass and woodwind are not. To me this idea helps the strings not significantly, or at all, but really mucks up the brass.
So I have strong preference for wide dispersion monopoles. In any event the new Dolby Digital up mixer does an incredible job of recreating the acoustic space in a fashion that continues to astonish me on my 7.2.4 layout to Dolby specs. Certainly I think for multi channel systems monopoles are best, and I would doubt there is a place for them in multichannel systems.