Share your in-room measurements?

[abdo123]

So, if I wanted to address that, probably go with something like a 12db per octave high pass for the Metas?

try to use the REW alignment tool to solve the null at the crossover frequency.

As for the crossover settings, Butterworth (BU) 12db/oct @ 95Hz with the port sealed on the metas.

Linkwitz-Riley (LR) 24db/oct @ 95 Hz for the subwoofer with the LFE input (built-in low pass defeated) used.

 

[abdo123]

@thewas

Do you mind filling this one size fits all target curve calculator? I'm kind of curious what results you will get and how much absorption we're talking about in the room above 1Khz.

http://www.ohl.to/calculators/targetcurve.php

 

[thewas]

@thewas

Do you mind filling this one size fits all target curve calculator? I'm kind of curious what results you will get and how much absorption we're talking about in the room above 1Khz.

http://www.ohl.to/calculators/targetcurve.php

Quick'n'dirty result as the room isn't box shaped:

Target at F2 compared to F1 : -7.1 dB​

What result do you get for your setup?

 

[abdo123]

Quick'n'dirty result as the room isn't box shaped:

Target at F2 compared to F1 : -7.1 dB​

What result do you get for your setup?

Which frequencies did you put as F1 and F2?

For me it was 200Hz compared to 10KHz was -6.4 dB.

 

[thewas]

Same as you, 200 Hz and 1 kHz.

 

[Jukka]

Hi, i am not familiar with dirac live, and i see it does two things that are usually not recommended, at least to newbie humans:
- fill dips (that one at 100 hz)
- eq the full band
Is this ok or because dirac is so smart or should we prevent it to do it?
Thanks for your insight!

The only way to effectively fill a null is to shift phase, and advanced automated correction system like Dirac Live will handle such operations. The Dirac Live software is automated, it only lets user to set taeget curve, but doesn't user to mess with the actual filters, which is actually good when doing difficult stuff like phase shifting or other time-domain dsp functions.

To me that 100 Hz dip does not look like a bad crossover, but it's still good to check that both high-pass and low-pass filters in both channel are set as they should be.

Speaker EQ at any frequency is fine, while room correction at high frequency is sketchy at best. Please make a distinction here.

 

[jlo]

Quick'n'dirty result as the room isn't box shaped:

Target at F2 compared to F1 : -7.1 dB​

this is about -1.3dB/oct, and is quite similar to the 'ideal house curve' for standard loudspeaker directivity and mid size typical room (-1.4dB/oct).
For reference, the Harman slope is -1.75dB/oct.

 

[bathroomskank]

I'm trying to do my first room correction and crossover set up ever with a MiniDSP Flex. I only EQwed the sub alone so far and set the crossover frequency to 70 Hz. The curve seems bad in the 80-200Hz region. Is it a room related problem ? What could I do ?

Thank you

 

[Chromatischism]

I'm trying to do my first room correction and crossover set up ever with a MiniDSP Flex. I only EQwed the sub alone so far and set the crossover frequency to 70 Hz. The curve seems bad in the 80-200Hz region. Is it a room related problem ? What could I do ?
View attachment 216486
Thank you

Please set your graph to 10-300 Hz for bass measurements and limit the vertical axis to 45-105 dB with no smoothing and we'll have a closer look. Show only the sub.

 

[bathroomskank]

 

[czt]

 

[poxymoron]

What smoothing do you guys use typically, or advise to use, when sharing measurements? Thanks.

 

[abdo123]

What smoothing do you guys use typically, or advise to use, when sharing measurements? Thanks.

1/12 octave.

 

[poxymoron]

1/12 octave.

Thank you. Finally got my minidsp Flex working with Dirac. Had to add an active USB cable to get USB audio out from the laptop into the Flex. Really impressed with the improvement, time to have some fun with it now. I'll post some measurements soon.

 

[dasdoing]

What smoothing do you guys use typically, or advise to use, when sharing measurements? Thanks.

it's like Instagram....the more likes you want the more filter you use hahahha

 

[IPunchCholla]

1/12 octave.

Why not psychoacoustic? Shouldn’t we be aiming for how our hearing works?

 

[Sal1950]

Why not psychoacoustic?

Ya mean like Janet Leigh in the shower?

 

[abdo123]

Why not psychoacoustic? Shouldn’t we be aiming for how our hearing works?

I do that generally when i design EQ, but psychoacoustic is too forgiving to diagnose issues.

 

[dasdoing]

VAR smoothing is perfect for sharing, since it wont hide stuff in the bass, while making mids and treble less wild.
but again, people prefer to hide stuff on forums.

 

[dasdoing]

personaly I prefer no smoothing, but I wouldn't suggest this to be used lol