I think Al and I did allude to such issues. It is not the high frequency information per se, unless you are talking about RF, which is never good for any system, but how the load (the speaker) reacts to those frequencies in a way that then feeds back on the amplifier. Traditional SS amplifiers that use a lot of Negative FeedBack (NFB) tend to be driven into oscillation by the capacitative nature of an ESL as load. Any modern design worth its salt should be Ok in this regard, probably including those made by FVA and RM, two of the oldest old timers in the business. (No disrespect intended; I suddenly find that I am an old-timer too.)
By the way, for most adult males beyond the age of 35 or so (which is almost certainly all of us here), even 14kHz is well beyond audible. Yet, I perceive that wide bandwidth is a "good thing" in electronics.
By the way, for most adult males beyond the age of 35 or so (which is almost certainly all of us here), even 14kHz is well beyond audible. Yet, I perceive that wide bandwidth is a "good thing" in electronics.
