This is an interesting dilemma. We did three gyms for a doctor. For the first two houses we used a home audio approach. The rooms sounded good but he was grumpy. In the third house we finally got smart and used some EV speakers. In our opinion they sounded grim, but they were just like the clubs that he frequented. He loved them. They also played much too loud. I am such a wimp. I either inserted earplugs or simply left after he came into the room and took control.