I am not an expert on this but you should have a Realtek Audio Control. Open that and select your speakers and set them up.
Then click on the Sonic studio app and look at the Basic or Advanced mode. If you have your speakers selected, there should be an equalizer box which gives you options. If you select Custom, it will open an equalizer option you can use.
Make sure the Sonic Studio Effects are on in the lower panel..
Maximus Z790 Hero,
Intel i9-13900k
Intel AX411