Hi Josie, I have a similar set of 8" JBLs, the JBL LSR4328s. They came with a room test mic and software to help you tune to the room frequencies. You may be able to find that for yours.

Another tool in my arsenal is Sonarworks. With that I was able to tune my JBLs and my headphones for a flat frequency response. They offer a free trial of the software. I ended up purchasing, not too expensive.




Steve

BIAB/RB 2022, Pro Tools 2020, Korg N5, JBL LSR 4328 Powered Monitors, AKG/Shure Mics.
PC: Win11 PRO, 4 TB M2 SSD, 2 TB HD, 128 GB Memory