I beg strongly to disagree! If the threadhead had said his requirements were for electronic music (rock/pop/elec jazz/etc.) I would have gone with the recessed-mid N803 also, as those big woofs and searing tweeter do fill the neighborhood!....But he said Opera and Concerti for cripes sake. What's that? GREAT MIDRANGE! We know that the Revel F30 and M20 have the finest midranges anywhere near their pricepoints. Like the N803, the F30 can be tricky to place in the room to get the bass balance correct, so the M20 is actually the safest recommendation. These speakers are balanced with a flatter curve, giving less energy at the extremes than the N803, requiring much less room treatment to tame that splashy Nautilus tweeter, too.
This is NOT meant to be another B&W bash, but but this guy isn't outfitting a disco here, but an opera house. I'd suggest he try to set up the F30. If the bass is too lumpy then get the M20 and maybe a fast sub later. Or maybe the Thiel 2.4 or something else with a fine mid-high bands and crossover region...but NOT the N803 nor 804.
Good Luck.
This is NOT meant to be another B&W bash, but but this guy isn't outfitting a disco here, but an opera house. I'd suggest he try to set up the F30. If the bass is too lumpy then get the M20 and maybe a fast sub later. Or maybe the Thiel 2.4 or something else with a fine mid-high bands and crossover region...but NOT the N803 nor 804.
Good Luck.