After all the faff with me about the Turnberry's (I hope "we've" made it up now

), may I say that I didn't find the Turnberry SE treble an issue at all and the whole balance of the Turnberry SE's as I heard them was actually quite mellow as I remember. NONE of the uncouth quacky and stingy sound of dave's bog standard IIILZ's for example, the rear panels of which vibrated alarmingly on bassy notes at modelst levels.
Tannoy worked extremely hard on the crossovers of the larger DC drivers back in the early 80's and I really think it's worth Googling up a few sites to find out what they've done, as they were aware of things needing to be done and it seems, dealt with it rather well from what I've read and heard.