On a separate note, I’d like to hear more about your Low SPL System:

Quad 2905 (LCR), ESL63 (rear)

I once tried a trio of ESL57 with a fellow HH member (MI’) just to see how Trifield would sound, we came to the conclusion that the ‘57s imaged so well that stereo sounded better; the centre’s treble panel did need a service though.

All the best,

Steve