I noticed the difference when I moved from sugar cubes to
scalesoundsystems.com
IMO a much fuller sound with some bass I could actually hear. They are closed during December 2020 and will re-open 1/4/2021. I really like the fact he designs speakers to fit the models.
I replaced a factory installed speaker with one of his "Coeval" series enclosures in an Atlas LOKsound-equipped GP40; and now, I can actually HEAR the "thumping" of the prime mover over the whine of the turbocharger!
...unfortunately, he had to discontinue the Coeval line of speakers because his one and only supplier of parts for them went out of business, and he never could locate another manufacturer who made speakers of that same level of quality.☹