I did 9 L and nine R but not exactly like that.
Should be OK, as long as you provide all 18 (9 L and 9 R) to Thierry. Are your curves vector or arithmetic average ? Vector is good for phase correction, arithmetic for amplitude.
no idea i just followed his instructions, i did nothing else. I am sure he will say if I did anything wrong.
Good on you for getting this done! It amazes me that people will fight over stupid little stuff like premium ethernet cables, but wonât put in the work to get their listening environment right. From your peak at ~35 Hz to the suckout at ~200 Hz thereâs a 20dB difference! And your room doesnât look all that bad.
Iâd love to hear your impressions when you get the DSP going.
Sent the readings off to Thierry says they all good. He seems to think my system has v shaped signature and asked me if I want to correct for it as well as the Room. I had to look up what it was and after doing so it does go with what I am hearing, more so since Naims last firmware update which seems to change the sq every bloody time much to everyoneâs annoyance. So most likely will need to redo this after every update to my Naim Atom. Could end up being pricey in the end.
Any how I asked him if itâs possible to hear just room eq and with his corrections for the v shaped signature.
Looking at your measurement, it seems a little low from 150 to 2 khz, I would suggest you ask Thierry to adjust it to something like this (this is the house curve I use):
It will take a few days to get used to the new sound though, and at first you might think it sounds worse.
I wonder whats causing that dip, speakers.or placement of them or the room?
My guess would be speakers, maybe in combination with electronics. Room influences tends to be less flat in my experience. And just to be sure, check so you donât have some forgotten DSP/PEQ enabled in Roon, or some other EQ going on.
I have previously run through @Magnus guide with my outgoing Monitor Audio Bronze 5 floor standers which I am looking to replace. I have some speakers which I am demoâing at home, some PMC Twenty5.22. The room is quite tricky, with one speaker in an alcove which results in more bass. These PMCâs are not rear ported and are more forgiving of positioning. They already sound great, but I wanted to run through this process anyway. You can see the right speaker measurement first. As you can see REW makes adjustments, but seems to leave two dips, one around 52Hz and one around 62Hz. I have played around with the settings but I canât seem to get it right. Should I consider manually adjusting bringing those up to the target?
The left speaker measurements are also included below and look okay to me but happy to hear any thoughts.
Itâs a bass null-node that causes those dips, and REW donât fix them if they are to deep. But you can do it manually if you like, by pressing the âEQ Filtersâ button. If all filters are occupied, uncheck a couple and let REW do the auto-correct again and then you can use the unchecked ones.
This might sound strange, but I would put the corrections in the other channel though, so left gets a couple of peaks that corresponds to the dips in right. The reason is that left channel donât seem to produce a null node, so correcting on left is likely better, and you wonât hear âstereoâ at those frequencies anyway.
Or another approach: do a mono-measurement and correct mono up to around 100Hz, then do stereo correction from 100 and up. Itâs a little more complicated to do this though.
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is that the same for me do you think I have a null node?
Ok. Heâs sent over a test file for me to listen and judge compensating for both room and speakers to give a flat response. Will feedback after had chance to listen to it. I had checked I had no eq on before performing the readings.
Not anything serious, your measurement looks easily corrected. My guess is that you have a so called speaker boundary interface, which you would get at around 110 Hz if your speakers are about 75 cm from the back wall.
That canât be corrected, but its so sharp and thin that you wonât hear it if Thierry leaves a little gap there (which he almost certainly will).
Had a listen and the difference is nothing short of miraculous. I would perhaps prefer a little bit more at the low end but not much. But overall it sounds so much better.
Well, you were up 10dB at 35hz before. This is what Magnus meant by âgetting used to itâ. 
Well I am sold on it thatâs for sure, I just hope Naim dont alter the SQ too much with their next update like the current one did and extended the bass as it was never that extended before. There has been a lot of fuss over it on their forum. I was planning on going DSP route before this but this pushed it so far out of my enjoyment I had to do something quicker.
Thanks @Magnus - I think ultimately I will be using HAF too but I canât until I finish the room completely, I want to add some acoustic panels to some walls and I am still working on that. I need to still convince my other half!!
Anyway, once I have new speakers in and then run-in, and any acoustic panels I can get away with (I am talking to a company for advice) I will re-sweep but until then I am happy to muck around in REW myself. I did have a go at âfixingâ the dips manually, but its quite tricky. Here is the result
I will now have a look at you other points, e.g. corrections in other channel and mono measurements. Thanks again for your tips!
WIth my experience: you could achieve better results by doing less corrections.
For example try correction 30 Hz to 200Hz (or 250Hz, or 300Hz)
Individual Max Boost 5dB
Overall Max Boost 6dB
Flatness Target 3 or 4dB.
Got my full filters. Wow I am hearing stuff I could not hear before and its much nicer to listen to some of the treble heavy tracks again.
Did a bad thing today. I moved the speakers as I felt the soundstage and imaging not right. Gone from toed in to straight on. So made more readings and sent them on. Hes going to hate me by the time I have finished. Lol.