I want to bring back the subject of which equalization method that's the ideal for equalizing speakers with non-ideal directivity.
In 2008, Sean Olive et al. published the paper Comparison of Loudspeaker-Room Equalization Preference for Multichannel, Stereo, and Mono Reproductions: Are...
I think you are misunderstanding what I'm saying.
We are both in agreement that a Q=3 filter is appropriate to deal with the 4 kHz dip. My position is that the dip (1-5 kHz in its entirety) has a low Q-factor and should therefore be dealt with with a low Q-factor EQ filter. Your position seems...
I'll have to disagree. These headphones are very sensitive and have a very low distortion profile. A typically recommended $100 amp should have no problem driving them even with a -12 dB gain preamp setting.
A Q-factor of 3 is not high. Toole defines low, medium, and high Q as 1, 10, and 50...
The response is fairly smooth up to 4 kHz, so it shouldn't be a problem to equalize the large 1-5 kHz dip in that area. It's from 8 kHz and up, where thing get really volatile, and reseats are likely to shift the narrow dips and peak around, that it becomes problematic to make reliable EQ...
Here you go: https://pierreaubert.github.io/spinorama/KEF%20R7/Misc/index_misc-speakerdata2034.html
It's the same data as you posted, it has just been digitized.
This is the original source: https://assets.kef.com/uploads/cm/r2018_whitepaper_en.pdf
He's a larger picture of the same spin:
Using the tonality baseline of 200 Hz, the dip is about 2-3 dB deep. Compared to the rest of the response from 1 to 10 kHz, it's ~1 dB. So not a big deal and not something I would advise anyone to correct based on this data.
R3 has an upward shelving treble in the PIR that starts at 2-3 kHz. It can be countered with a -2 dB high shelf filter @ 2.5 kHz. The settings I recommended in my first post serve the same purpose.
R7 has a bit of a dip from 2 to 3 kHz. The measurements I have access to aren't high quality...
You must have been reading the wrong forums or not reading this one carefully enough :)
Any of the well-reviewed $100 DACs will do, such as Topping D10s, SMSL Sanskrit 10th MK II, Schiit Modi 3+, Monoprice Liquid Spark DAC, JDS Labs Atom DAC.
I very much doubt any of them are going to make an...
Nope, the DAC is the weakest part of the K5 Pro, so that's where you should look if you want to "upgrade". Waste of money if you ask me.
Most, if not all, of these amps also have analog (and therefore flawed) volume control. In that regard, they would make a downgrade.