I’ve used Heresy II and Cornwall between my Khorns , and they sounded ok. The problem is that the speaker that most closely matches the  performance characteristics of the mighty Klipschorn is the Lascala . I was never satisfied with the obvious compromise of not using the Lascala , so eventually I put one in at center. The difference is day and night , and worth the trouble. Klipschorn with the Lascala center is about as good as it gets for a front stage in home theater, I’d definitely wait and finish it off the right way , good luck .

I think there are 10 Moody Blues albums in the collection  So your comment has prompted me to play them all in my personal best of order    Think I will start with - (at #2) Days Of Future Past, later in the day 

I have had both of those models. Since the 2270 was recapped, you did well. I upgraded my C26 to the C32. I need to recap my 2270.  If the LS are tuned in (wired right lol) then I would AB them with the Heresy IV using the Marantz in the same room and at the same time.  Willing to bet that the grass is greener where you are. lol  

I appreciate the typos.  Nowadays one prints things out three times on their printer , untill they've rooted them out. Trees fall by the wayside. (Sorry for the diversion...)

If the LaScala is set up right, I mean right for your taste as far as the xover is concerned, then it is one of the best speakers I know. I only have a handful of speakers: a small LS3/5a, a medium-sized LS3/6, both BBC speakers. Then a big Tannoy Canterbury with a 15’ Alnico, two pairs of Quad 57 ESLs, a 1977 LaScala and a 1973 Klipschorn. Of course, I know a lot of speakers that I don't have myself. The LaScala is an exceptionally good speaker. I wouldn't trade it for a speaker that combines a conventional bass with midrange and tweeter horns. On the amp side I have two Mcintosh power amps, a MC 275 and a MC2102, a C22CE pre amp, old Quad tube amps, old Leak tube amps, and several young only 35 to 40 year old Quad transistor pre and power amps and a Marantz 2270 that I inherited from my uncle and that has been restored by a specialist. A few other devices as well. The LaScala sounds awesome with most amps. The Marantz does it brilliantly and so do the Quad transistors. There is hardly a speaker like the LaScala that allows delicacy and a fantastic transition from the midrange horn to the bass horn to sound so seamless and natural. It is, absurdly, as good as the BBC speaker in this respect. The only difference is that the LaScala are powerful when the BBC speakers are out of breath. If I had to give everything away and could only keep two speakers, the LaScala would be one of them; the other one is the small LS3/5a, which can't reproduce low bass either. Personally, I'm less and less of a low bass fanatic. It could be my age, but I'm more in the middle of the frequency range. The LaScala conjures up such a fantastic sound in the room in the frequencies where it can play. If your LaScala is gone, it's gone and you'll cry, in a week or in four weeks.

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I'm still going through my Red Menace and Yellow Peril... GREAT STUFF!

I found this recently. I no longer have my letter of inquiry, but it's obvious my understanding of autoformers was (and still is) imperfect.

Very slow and balky at log-in