Which leads me to make this observation - I don't believe for a moment
SET/Horn setups only do 'vocal'. If that was the case I'd have no use for
them! A perfect example - earlier on I was listening to an unusal Polish
recording of Szymanowski's Violin Concerto No. 1 by Zachar Bron ('Muza'
label - SX 1536).

I dunno. Must be me, I must be going deaf...???

Didn't suggest or imply "only", but "few". A set/horn system won't do
much with the Saint-Saens Organ Symphony, Bach's B- Mass, even Mozart's
"Sparrow Mass"; trumpets in general, or anything with kettledrums. But
frequency-limited sources with a similarly limited peak-to-average will
come out just fine.

As to "deaf", I went through a hearing test lately as part of an
overall physical, I am down 3dB at 17khz, 10dB at 18khz... the last
time I went through the same drill (30 years ago at age 24), I was down
3dB at 18khz... But then, I wore ear-valves (frequency-sensitive
ear-plugs) at concerts and proper ear protection when shooting. But we
are all going there. I knew I was over the hill when I finally admitted
to bifocals.

Peter Wieck
Wyncote, PA