@blindjim-- I think you have to be more specific about the speaker, amplifier(s) and your room. For some years, I ran a large home theatre, using some big Snells in a D’Appolito configuration, with multiple basic amps from ARC. At the time, I was using Crosby Quads as my main two channel speaker, and did not want to subject them to the pounding that a HT system can impose at high dbs.
The size of the room and screen may also involve a spread between the L+R that aren’t conducive to stereo imaging-- (unless you are confining your music listening to 5.1 type mixes).
There’s also the complication of systems- I know some folks can get double duty from a HT and stereo system, but I didn’t want a bunch of additional electronics connected to what amounted to a simple, vinyl-only stereo, so I kept the systems entirely separate (even though both, over the years, as they evolved, were in the same room). This requires some intelligent use of the space, and room treatment, since the projection screen, unless a motorized drop down (which I used in an earlier HT system) is a highly reflective surface for acoustic purposes.
Generally, I would think some modern speakers would be well suited for HT use, such a larger horns, or bigger dynamic speakers.
There’s also the matter of how the subwoofers are crossed over for theatre v. music. I suppose if they are run through a processor that allows you to change the crossover point for different types of listening that solves one problem, but potentially adds another- I wouldn’t want to run my stereo through a pre-pro meant for home theatre. I gather that’s why there is a by-pass on many set-ups, but I avoided those complications by keeping the systems separate.