Let me first say again that I don't think this approach should be used at all until the other (better) options are exhausted.
E.g. with well-designed loudspeakers EQ correction above about 500Hz is not needed at all, and even with many not-as-well-designed-ones it is much safer to EQ in this range based on anechoic data, rather than based on in-room response.
That being said, if I really *had to* use RoomFit for this kind of hybrid full range correction I'd try with the following settings:
- Room correction profile (created and loaded in RoomFit):
- Individual Channel RoomFit, Smoothing: 1/12, Target: B&K, frequency: 20Hz-300Hz, No-Boost Mode: enabled, Min Gain: -12dB, Max Gain: +6dB, Max Q: 10
- The above settings enable precise correction of room- and placement- induced bass resonances.
- Loudspeaker correction profile (created by RoomFit, but loaded in EQ):
- Stereo RoomFit, Smoothing: 1/3, Target: B&K, frequency: 300Hz-10000Hz, No-Boost Mode: disabled, Min Gain: -6dB, Max Gain: +3dB, Max Q: 3 (equivalent to approx. 1/2 octave)
- The above settings are designed to perform mild tonality adjustments without introducing new resonances.
As mentioned before, the two profiles would need to be run at the same time: filters from 1. loaded as a RoomFit profile, and filter values from 2. would need to be manually copied into the EQ screen.