What Hz is best for mid bass?

Frequency Response: 20-20kHz ±3dB = Good.

Midbass is that all-important frequency range between 200Hz and 500Hz and covers the most important instruments in our musical libraries: voice, cello, viola, brass, tympani, woodwinds, bass, guitar.

Mid-Bass (160 Hz to 320 Hz) OctaveRangeCenter4160-320 Hz250 HzThe Beginner’s Guide to Frequency Ranges | House Grail housegrail.com › bass-treble-hertz-which-hz-is-which-range