Studio Monitor is not a Federal Trade Commision regulated term, and any sleazebag can build and sell one out of one or more drivers and a box. A specific make and model recommendation would be the only reason I would consider one without hearing it. I was in the boutique hifi store in Louisville shortly before they went bankrupt in 1986, and they weren't selling any studio monitors. I don't buy speakers I can't listen to, there are too many opinions of people I've heard that, when I heard their actual speakers, I discount everything they say as musically ignorant. The last guy whose speakers I went to hear, his speakers had no bass response. Nice treble, but that is not high fidelity. Pink Floyd's Money that sounded good on his speakers, is not the only song in the world. The whole bookshelf speaker fad when I was 20 left me cold, piano and rock & roll both have significant things to say in the 40-200 hz band. The piano pieces I play have significant left hand parts, and I auditioned my console piano with Lecuona's Malaguena before I bought it to make sure all the notes had a pleasing tone. I auditioned my SP2 speakers with Beethoven Three Sonatas by Rudolf Serkin for piano fidelity, plus ZZ Top Afterburner Woke up with Wood track to check time alignment on the bass drum hits. I've since found Peter Nero's Young and Warm & Wonderful LP for auditioning piano sounds, which was recorded in dynagroove with better condensor mikes, and has a solo top octave Steinway grand piano passage that is extremely difficult for amplifiers and speakers to reproduce without hissing (intermodulaction distortion).
As far as using a stage horn + woofer speaker like the KB300 in a home, they are designed to project music down from the stage at an audience. In my home I have the Peavey SP2-XT horn+woofer speakers mounted on poles (speaker stands) behind and straddling the Steinway console. This aims the treble sound at my head when I sit on the couch etc. Makes the living room look like a disco to my formerly dancing friend, but it is my music room, fine wood speakers are so 1950's. The SP2 and probably the KB300 speaker too, have a socket built in the bottom of the case to insert the pole into.