Help needed Interpreting Spectroid room response graph

[Bernard23]

I'm using a Wiim Ultra with roomfit applied, speakers are wharfedale Linton Heritage mains and 2 x BK XXLS400 subs.

I'm playing a single sine wave sweep 20Hz to 200Hz and it sounds all over the place, so I attached my Dayton imm-6c mic to my 9hine and recorded the response using the Spectroid app several times. I've attached screen shots of the response which looks flatter than it sounds tbh, but assuming it's a reasonably accurate measurement, how would I best apply EQ to flatten it out, bearing in mind my room target is Harman.

 

[staticV3]

I'd only apply EQ below 400Hz based on proper MMM measurements of the steady-state response.

With single-sweep measurements, you'd likely degrade things if anything.

 

[Bernard23]

Roomfit settings are moving mic, 20-300Hz.

So what you're saying is don't make any EQ adjustments based on a single sine sweep? What about using white noise?

I'm beginning to think that using the harman target is the reason for the overblown bass, so I'm going to re-run the process using the BK target instead.

 

[Bernard23]

This is the result of the most recent roomfit based on these settings and using a Dayton mic.

 

[kemmler3D]

This is the result of the most recent roomfit based on these settings and using a Dayton mic.

View attachment 536551

This looks improved but you've still got a big peak around 45hz, which if you're finding the bass to be bloated might be worth reducing manually.

 

[Bernard23]

This looks improved but you've still got a big peak around 45hz, which if you're finding the bass to be bloated might be worth reducing manually.

I wonder if that's because of the Harman target though? I've set the roomfit to 0dB gain, so you'd have hoped that it would have reduced the overall gain to mitigate the trough at 65Hz (which i have measured before and can hear clearly). I haven't see a way to set up a gain offset when making a manual PEQ profile in the Wiim app like you can in Roon for example, so I could boost the 65Hz and cut the 45Hz peak.

 

[kemmler3D]

I wonder if that's because of the Harman target though? I've set the roomfit to 0dB gain, so you'd have hoped that it would have reduced the overall gain to mitigate the trough at 65Hz (which i have measured before and can hear clearly). I haven't see a way to set up a gain offset when making a manual PEQ profile in the Wiim app like you can in Roon for example, so I could boost the 65Hz and cut the 45Hz peak.

I'm not sure how roomfit works exactly but in general these tools don't do any boost, only cut. Long story short it's because boost works like multiplication and notches are caused by subtraction, and 2-2=0 no matter what you multiply by.

As for the target it's giving a +5 boost, substantial but not insane IMO. Is there a flat target you could try instead?

 

[Bernard23]

I'm not sure how roomfit works exactly but in general these tools don't do any boost, only cut. Long story short it's because boost works like multiplication and notches are caused by subtraction, and 2-2=0 no matter what you multiply by.

As for the target it's giving a +5 boost, substantial but not insane IMO. Is there a flat target you could try instead?

Yes, a BK target, though I can mitigate the Harman bass boost by adding a low shelf to offset it.