Measures of my room

[Taker]

https://www.swisstransfer.com/d/0b9deedb-5980-4e61-8a62-8819898a666f

New measurements

Calibrated and uncalibrated. L + R, L and R
Unfortunately could not do at the same spl volume.

 

[Taker]

I've loved those Neumann 310s ever since Amir measured them. He pushed them to 96dB in room response in his review and they did really well in distortion above 400hz but yours are averaging 105dB so I thought there might have been some error in measurement. I use a phone SPL meter to get close, the main thing is to have a better idea where your noise floor really is. Let's see the room response with the stereo pair + sub.

They are amazing speakers . This system, 10 years later, is still one of the best I've heard playing

 

[Taker]

https://www.swisstransfer.com/d/0b9deedb-5980-4e61-8a62-8819898a666f

New measurements

Calibrated and uncalibrated. L + R, L and R
Unfortunately could not do at the same spl volume.

So guys , what do you think ?
Where can I get better ?

 

[Keith_W]

@Keith_W has created a good guide to using REW which you can check out at this post.

Please read this eBook.

As for your measurements:

1. There are 30 of them in that MDAT. It appears there are 6 actual measurements, with 5 identical copies of each. And the labels make no sense, what is "L 1125 310 + 750 Callibrated L"? And what is "DEZ"?

2. None of your measurements have a timing reference.

3. This is a comparison of "L+R 1 DEZ 25 310 + 750 Callibrated" (red) compared to the vector sum of "L 11225 310 + 750 Callibrated L" and R (green). You would expect the vector sum to give you the exact same frequency response, but they don't. I can only presume you are measuring different things here. Without knowing what you are measuring, since the labels make no sense, there is nothing to say. And the frequency response of the red curve looks horrendous by the way. Please read that guide.

4. In a previous post, I said that the polarity of one speaker is inverted. It looks as if the polarity of both speakers is inverted. Sometimes this is by design, sometimes it's by accidental cabling. Anyway, it does not matter - you should not be able to hear it.

Your subwoofer appears to be well integrated if we look at the step response, but it looks as if it's playing too softly. It should be about 10dB louder.

 

[Sokel]

This measurements looks like they are taken REALLY close to the speaker, they make no sense. Hence the level as well, Umic is usually close to actual levels.
And despite that, something is really off with the bass.

 

[DWPress]

If I take the LR DEZ calibrated and the LR 1125-310 and lower the DEZ measurement by 7.5dB I get maybe (?!) different room measurements but still not looking great. We need a little more info, more measurements with a little more effort getting centered between mains. Are you really measuring at nearly 110dB?

 

[Taker]

I did 5 measurements each. Left + right , Left, right …
I put the mic in my listening position , about 1,40m from speaker . Can’t remember the Dbs .

I can do it all again and be more precise with names , etc .

What should I do more precise ?

Are the speakers inverted ? Maybe my cabling ..?!
Thanks in advance

 

[Taker]

If I take the LR DEZ calibrated and the LR 1125-310 and lower the DEZ measurement by 7.5dB I get maybe (?!) different room measurements but still not looking great. We need a little more info, more measurements with a little more effort getting centered between mains. Are you really measuring at nearly 110dB?

View attachment 494959

110dbs ? No way
Tried to check with an iPhone app and it measure around 70dbs but don’t think it’s accurate.

Something weird is going on , wasn’t measure that height that’s for sure .

 

[Taker]

This measurements looks like they are taken REALLY close to the speaker, they make no sense. Hence the level as well, Umic is usually close to actual levels.
And despite that, something is really off with the bass.

Around 1,40m from the speakers
It’s my listening position

 

[Taker]

Please read this eBook.

As for your measurements:

1. There are 30 of them in that MDAT. It appears there are 6 actual measurements, with 5 identical copies of each. And the labels make no sense, what is "L 1125 310 + 750 Callibrated L"? And what is "DEZ"?

2. None of your measurements have a timing reference.

View attachment 494952

3. This is a comparison of "L+R 1 DEZ 25 310 + 750 Callibrated" (red) compared to the vector sum of "L 11225 310 + 750 Callibrated L" and R (green). You would expect the vector sum to give you the exact same frequency response, but they don't. I can only presume you are measuring different things here. Without knowing what you are measuring, since the labels make no sense, there is nothing to say. And the frequency response of the red curve looks horrendous by the way. Please read that guide.

View attachment 494953

4. In a previous post, I said that the polarity of one speaker is inverted. It looks as if the polarity of both speakers is inverted. Sometimes this is by design, sometimes it's by accidental cabling. Anyway, it does not matter - you should not be able to hear it.

Your subwoofer appears to be well integrated if we look at the step response, but it looks as if it's playing too softly. It should be about 10dB louder.

Thanks for replying

1 is the date and what speaker
Left + Right , left and right
First 3 calibrated , last 3 uncallibrated .
Did 5 of each calibration that’s why there’s a lot of files , didn’t know which to choose and delete others .

2 don’t know what it is can you explain please ?

3

4 maybe my cabling is wrong ?! Will check it out

 

[DWPress]

I think we'd like to help you but you are going to have to do some reading first about REW so you can take better measurements and present the data in a more comprehensive way, Keith's guide is an excellent start.

 

[Taker]

Yoo Guys, so had some time and did some more measurements
REW file:

https://www.swisstransfer.com/d/8af87f0a-728d-4e16-9ea8-5f493ad9cd7f

As I'm changing some things, I disable the MA-1 correction and measure each monitor plus sub.
So the measurements are in this order, with 2 tries each :
1&2 - Sub only
3&4 - Left + Right + Sub
5&6 - Left only
7&8 - Right only

Thanks in advance

 

[Taker]

I think we'd like to help you but you are going to have to do some reading first about REW so you can take better measurements and present the data in a more comprehensive way, Keith's guide is an excellent start.

Did my best here
https://www.swisstransfer.com/d/8af87f0a-728d-4e16-9ea8-5f493ad9cd7f

 

[DWPress]

Ok, looks like an issue with sub integration with it being delayed from the mains which is probably audible. Some EQ would be helpful to cut down the bass peaks but you've also got a pretty big trough 800hz-3k and a smaller one at 80-250hz that could be manipulated. The 80-250 null is present in both mains, I would play around with speaker placement to try to get those filled so easier to mix with sub. Not sure what to make of your step response considering you have some room treatment but better to come back to that after you get the other things sorted.

Start with some EQ on the sub peaks after sorting the mains placement then level match them (subs look to loud as is), and see if you get better integration. Report back with new measurements.

How are you implementing EQ?

 

[Sjkrabbe]

here is my speakers B&W 805Matrixes in my room - before and after roomcorrection

 

[Taker]

I rest in eq stuff for now .
Even with all these measures, the system sounds very good, and I don't feel anything is missing, and I often A/B with 2 pairs of good headphones.
Next year I'll try again and do some speaker placement, etc, and measure again.
I'll be back ahah
Meanwhile, Happy Christmas and Happy New Year, everybody