Rew eq below 200hz

[Ubik2020]

Hi, unclear to me how practically do this. Example: If I have a response curve measured at listening position that goes 20-20000hz if I eq only below 200hz,the interface will not eq above it. To my understanding if I get the filter this way they will not be related anymore to the freq above 200hz freq.
Rew will eq up to 200hz relating the filters to the rise slope curve umbalacing the sound versus higher freq that will remain un-equalized?
Possibly I have missed the point?

 

[JStewart]

Hi, unclear to me how practically do this. Example: If I have a response curve measured at listening position that goes 20-20000hz if I eq only below 200hz,the interface will not eq above it. To my understanding if I get the filter this way they will not be related anymore to the freq above 200hz freq.
Rew will eq up to 200hz relating the filters to the rise slope curve umbalacing the sound versus higher freq that will remain un-equalized?
Possibly I have missed the point?

Hi Ubik2020! Welcome to the forum!

You could use a shelf filter to maintain/restore tonal balance. This assumes your dsp accepts shelf filters. I’d like to think most do.

 

[ddude003]

It would be helpful if you told us a little bit about your kit @Ubik2020... What hardware and/or software does your Room Correction DSP?

Pick Generic Generic EQ... Then open EQ with center button... Pick first EQ filter select LS (Low Shelf) and set it to 200Hz and add +3db for example...

 

[Ubik2020]

Indeed ddude003! I use Audirvana software on my Mac and from there I go directly to a dds reclocker that do its cleaning work, then send it to the dac.
With macos rew suggests me to use Apple AUNbandeq, although it might be probably better I would use Crave eq which I use in my recording studio.Crave eq has a great quality imho but I would probably need to set rew for generic eq setting?
I have enclosed 3 pictures, they are titled : 1 is measurement at listening position, 2nd is near field (approximately 45cmt, and I have done this to get confirmation that my low end issue is a room issue in fact helping my shy full range driver a bit. The third picture shows what happen if I eq only below 200. The filters will damp the green freq response down to the blue line, with the consequence that I will loose the relation with the curve above 200hz.
Have a look please and I will be grateful for the help in learning how I better move in this situation

 

[ddude003]

Photo 1 eq below 200Hz is _not_ using a low shelf filter...
No matter if you use AUNbandeq or Craveeq you need to set a _LowShelf_ filter at ~200Hz and adjust a cut or boost of db to your taste...
You might try measurements of each speaker separately at the main listening position... And you might adjust the sweep tone SPL to ~75db... Post the .mdat file...

 

[Ubik2020]

Photo 1 I think was before I pushed match response to target. I will read manual to understand how to tell rew to use a low shelf. So far I was jush using match to target and it was mixing peak and low shelf filters. About 6 to correct below 200hz.
Back to manual to learn and then back here. Thanxs so far

 

[JStewart]

You can manually add the filter to REWs list of filters and you can do it either before or after using match response to target.

De-select Auto EQ check box and in the dropdown that has PK (for Peak) find the low shelf filters. A “Q” value of .7 to 1 should be fine if there’s an option to change it.

 

[ddude003]

@Ubik2020, you might also look into Convolution for basic Room Correction DSP... And then add a mastering quality parametric EQ to add additional tone and color to your taste...

I use Audirvana Studio with two VST plugins... First in the signal pipeline is the HangLoose Convolver with Room Correction FIR Filters... This creates my basic "flat" B & K Room Response... Next in the pipeline is an emulation of one of several old-skool Passive Parallel Equalizers like the Manley Massive Passive or the GML 8200 for instance... This allows me to add some additional tone and color to taste...

This video might be worth your time...

 

[Ubik2020]

Thanxs to all, precious advises for my learning. Food for thoughts for sure