@majorc
"the (older) M60s are a complete no go"
Yeah, kinda wondered if he'd say that, and he's a Klipsch horn speaker guy according to local dealers here. I've only heard your same taller EMT LFT8Bs with the later model Quicksilver mono amps with the larger transformers and knurled speaker terminals. Sounded quite nice. Also heard the smaller version EMT LFT16a 85db speaker many times paired with a low 8 watt limited production Audio Note Meishu integrated tube amp and it was impressive. 16As were amazing with the new QS Mono 120s, and could tell the EMTs like power. Matching well is key for sure.
fwiw, both pairs on all amps were run with very low capacitance RCA silver interconnects and low capacitance silver plated speaker cables. All combos had plenty of volume in a 20'x40' foot room too.