Depending on your system and your source or sources (analog tt vs. streaming in the digital domain), perhaps consider using a miniDSP, fed by PEQ filters from REW.
This way you’re actually measuring the room interaction with your system, across your entire frequency range. Then if you so choose, you can generate filters that you load into the miniDSP.
Even if you don’t want to insert a Digital Signal Processor into your audio chain, I recommend that you download REW, which is free, and learn a bit about how it works and do some measurements. You need a PC/laptop and a calibrated microphone, like an affordable uMIK-1 ($80).
At at a minimum, it will give you a good, objective view of your frequency response in your listening position and then you can go from there.

