I gave an explanation as to why I notice the highs were more pronounced. Like ear fatiguing type of pronounced while the mids and the bass become very muddy. And the soundstage was so huge. Things were not where they were supposed to be kind of huge (distorted soundstage).
It was all explained in a video I posted from the Dirac interview. Where they mentioned how going out of phase (due to less resistance
I presume and my cables having mismatch lengths. So the correction that Dirac has done was no longer applicable to the new speaker cables.)
For example, let's pretend my old speaker cables, together with the resistance resulted in a 3ms delay. Dirac comes in and corrects the speaker delays so that by the time all the audio meets up at the first microphone position, your main listening seat, all the sound will come at the same time. So Dirac software makes some audio come out faster on some speakers and slower on the others and by the time the sounds all reach that listening seat, they are all now at 0ms. No delays between each speaker.
Now, I've replaced my speaker cables. But due to less resistance, the signal can reach the speakers at just a 1ms delay. But my Dirac still employs the same amount of phase correction (timing delay) based on my old cables. The result is now the front speakers are playing audio at a -2ms faster than my surround speakers. The result of having the other speakers too having different delays results in what I experienced. The muddy bass and mids and very pronounced highs as well as causing the sound stage to either increase or decrease. In my case, it was increase.
It explained why I got that pronounced highs. And it wasn't because some frequency signals were able to be transferred, my measurement graph that I showed the before and after proved that there's not much change to the frequency. In the end, it was because of the phase difference (timing distortion). As seen here.
You can read more to my finding that explained what I heard here in the full post.
https://forums.hardwarezone.com.sg/128454940-post24.html
Btw, now that many people understand how different cables with different level of resistance that leads to the timing for each speaker
starting to play the audio defers from every cable, it explains a lot of why people say how cables can make the sound feel more open or that the highs were more pronounced or that the soundstage has increased.
In fact, the funniest part is when you watch this latest video. They both talk exactly all the points that I mentioned that the gauge and the resulting resistance causes delays in when the audio plays and without any sort of Room Correction to properly sync the timing of all the speakers, this is the result. Their findings changing from 1 cable to another is the same as mine. But what they don't know is that the frequency measurement should remain the same. But it was the phase difference (timing distortion) between each speaker that caused the soundstage to increase or decrease and therefore making the mids and bass muddier and the highs still maintaining their clarity under the more muddy bass resulting in the more "pronounced highs" that people experience with a change of cables.
It is really funny to watch once you understand the science of what is causing this don't you think?
Not because the cables bring more frequency information that was 'missing' but because the length and resistance of each individual cable (even a simple difference in length of the cables between the cable meant for the right and the other for the left or the slight different in resistance on the right and left) can cause the speakers to go out of phase, thus altering the soundstage.
Here. Have a look at the video. Exactly what I had experienced and exactly what was explained in the Dirac interview powerpoint slide.
The full Dirac interview.
Here's the cable comparison video that will give you a laugh as they think that the cables made any sonic difference or frequency changes to the audio when it was actually just a phase difference (timing distortion) that is changing their soundstage and muddying their mids and bass that the highs became clearer.
And as mentioned, my frequency chart of before and after. And my before once was done weeks before the 'after' chart as this was when I was doing my room correction. So they are weeks apart but ultimately, frequency wise, sound wise, sonically wise, they sound the same on paper. But phase wise, it resulted in us hearing this change in soundstage and having certain frequencies that are not easily 'fazed' (pun intended) like the high frequency sounds thus why they got more pronounced while their mids and low frequencies became muffled in all these timing distortions.