Here is something else you might want to consider? I calibrated my monitor speakers using this guide from Presonus and has worked well for me. Since you already have Studio One Pro you have the tone gererator built into it. The only other thing you need to do is download a dB meter app to your phone and follow the guide.
How Do I Calibrate My Studio Monitors?


BIAB 2025 Ultrapack- Studio One Pro 7 Windows 11, Mac Mini M4 with Logic Pro 11, Melodyne Studio