[kingpage]

Any one with M4 and B2 could tell me how to EQ M4 to match B2 approximately in level (with a 5 band graphical EQ that has Q)? I have already brought down the bass to make M4 flatter, but not sure how close they are to B2. Then, there's still the treble.

 

[tinyman392]

Quote:

Any one with M4 and B2 could tell me how to EQ M4 to match B2 approximately in level (with a 5 band graphical EQ that has Q)? I have already brought down the bass to make M4 flatter, but not sure how close they are to B2. Then, there's still the treble.

 
You want to bring up the mids...  M4s have a really deep v shape while the B2s are closer to a flatter sound. 
 
Try this:

1. Band1: 0
2. Band2: 3 dB
3. Band3: 6 dB
4. Band4: 4.5 dB
5. Band5: 0

 
IDK how close it'll be though. 

 

[kingpage]

I know B2 is ruler flat for bass and midrange because it uses TWFK drivers, but people here say it has quite bright highs. That's why I'm only bringing down the lows of the M4, and maybe keep mids and treble as they are. I consider M4's treble to be non-harsh but there's a lot of energy there.
 
M4's bass is a little too much for me anyway. I'll get the B2, so I was thinking I should make M4 a bit closer.
 
I only used 2 bands so far.  -5db @ 70Hz (q=0.7), -2.5dB @ 250Hz (q=1)
 
I can change the frequencies as well as the q values.

 

[Anaxilus]

Quote:

I know B2 is ruler flat for bass and midrange because it uses TWFK drivers, but people here say it has quite bright highs.

 
Not quite.
 

 

[tinyman392]

Quote:

 
Not quite.
 

 
I didn't hear the B2s to sound anything like that at all   LOL.  I'll still trust the graph though

 

[kingpage]

The graphs will depend on the measuring equipment and test rig. I suspect the low frequency variation in your graph suggests the seal is not good.
 
There's another measurement.
 

 
Reference:http://www.head-fi.org/t/484569/review-fischer-audios-dba-02/3885#post_7337271

 

[Inks]

Rin Choi mentioned in regards to the graph posted by Anaxilus (which are made by another source):  "Those measurements are way off from the standardized point of view"
 
To be fair, that person is still putting in work on his measurement rig.
 
No worries though, Rin is going to measure the B2s pretty soon and will add a HRTF to the raw data to see just how flat it will be perceived. 
 
You know that B2 graph Anaxilus posted makes a lot more sense when you place 10k right on the last peak before the roll-off, maybe since the point of view is skewed. Still raw data needs to be compensated for it to make more sense as to how we would actually perceive it. 

 

[tinyman392]

The graphs that KingPage posted is closer to what I hear in the B2s...  I'll wait for any updates though

 

[kingpage]

Or innerfidelity...

 

[Anaxilus]

Quote:

The graphs will depend on the measuring equipment and test rig. I suspect the low frequency variation in your graph suggests the seal is not good.
 
There's another measurement.
 

 
Reference:http://www.head-fi.org/t/484569/review-fischer-audios-dba-02/3885#post_7337271

 
No it's compensation, yours seems uncompensated.  The variation is due to ambient low frequency from outside after swapping channels (ie. gardner's leaf blower) and is an aberration and affects the results not at all.  It's still inline and suggests nothing about a poor seal at all.  Poor seal would affect the entire bass range so there would be no mid bass hump at all.

 

[kingpage]

What sort of compensation did you apply?

 

[Anaxilus]

Quote:

 
I didn't hear the B2s to sound anything like that at all   LOL.  I'll still trust the graph though

 
I think you guys need to adjust for the fact that one graph is scaling an extra 10dB over the same area so the proportions are different.  If you stretch the other vertically you'll see a wider disparity in the dependent.  I have no problem hearing the B2 like the graph I posted.  Clear, relatively smooth treble with a mid bass hump and major roll-off from about 60hz.  I find the lack of a mid bass hump odd in the other measurements.

 

[Anaxilus]

Quote:

What sort of compensation did you apply?

 
It's purrin's you'd have to ask him.  

 

[Inks]

I'm wondering if it's compensated too, but I think it's just raw data.
 
FYI  Rin has a better case than IF's compensation method. 

 

[Anaxilus]

Quote:

I'm wondering if it's compensated too, but I think it's just raw data.
 
FYI  Rin has a better case than IF's compensation method. 

 
Yeah, there is no right or wrong measurements between rigs, they need to be correlated in a relative terms on the same rig.  Purrin intentionally does not use a head like IF.