Focus Fidelity Filter Designer

[Confused]

My advice would be to keep Sweet Room EQ (and SAM if there is a profile for your speakers) enabled and do measurements for FF on top. FF will perceive this as "how the speakers work in the room" and do corrections accordingly. I always had SAM enabled for my speakers when I did measurements for Audiolense. Audiolense alone could never match the combination of SAM+Audiolense.

This is an interesting point.  I debated this one with myself before producing the measurements that I used in Focus Fidelity.  In the end I opted to take the measurements with SAM enabled, but set to 0%.  The idea being that I could then use SAM and FF together, and I could use SAM% to dial in a little more bass if I felt that a particular track or album needed it.  I wonder if SAM 50% might be a better option, then allowing adjustment up or down.  To be honest, I think both methods would work, albeit slightly differently.  I am happy with the approach I have taken so far, so maybe something to try later if I have some free time.

@Vivialet - Your comment regarding the 4dB limit is interesting, and indeed makes me wonder why there is this restriction in the settings.  Whilst this has not been an issue for myself, I can imagine that this might be problematic with some systems and rooms.  I think the end result would be dependent on the speakers, at what frequency the key nulls manifest themselves, and so on.  So I was wondering, have you asked Focus Fidelity why there is this 4dB limit imposed in the settings?  For me, I would have thought that if 4dB can be set, then why not 2dB, or even zero?  Maybe a "feature request" for Focus Fidelity to consider in the future?  Unless there is a specific technical reason within the software why the limit cannot go below 4dB?  Which is of course a question for them to answer.

I am thinking that there might be some workarounds in the Target settings screen, you could manually adjust the curve to follow the problematic bass null, and hence mitigate the gain issue.  But this is obviously far from ideal, hence why I would be interested in the comments of Focus Fidelity in this regard.