
TLS Guy
Audioholic Jedi
Yes, a corner location was common for the first 40 Years of audio. The Voight corner horn of the thirties was corner loaded. That was the world's first Hi-Fi speaker.Explains why they fit exactly in the corners , now days subwoofers have replaced that job so main speakers can focus more on vocals and content rather then just bass. I’d definitely look into some modern speakers and maybe add a subwoofer if possible. I have them hooked to my tv for cable /movies etc , music shows like the voice etc .
unfortunately my dads not a fan of speakers so there’s one tv room with none hooked up, my room is on the opposite wall. So my sound during loud commercials sometimes bleeds into the next room .

Its descendants are the speakers from Lowther, still in business and the world's oldest H-Fi speaker company.

From the US we have the Klipschorn
And of course Tannoy again UK

All the above are horn loaded speakers. Horns have to go in the corner, as F3 is directly related to the width of the horn mouth and so the corner becomes an extension of the horn mouth.
Gilbert Briggs, GAB as he was affectionately known, and founder of Wharfedale, designed a ported three way speaker known as the Airedale back in the fifties. It was very popular speaker.

I designed a corner speaker as a "nod" to GAB, for the living room of our home in Grand Forks. The build was 1979. We sold them with the house in 2008.

So those Allison speakers for their time they were nothing unusual