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GR Research Speaker Upgrade Review (Sierra-2EX V2) [Video]

"Also, taking multiple measurements from every angle and estrapuating [extrapolating] what the actual response might be is not exactly high resolution."

That he doesn't even understand that the NFS also takes direct measurements in the 9 positions where he takes a measurement, and hundreds of additional measurements in other positions on top to allow computation of more complex models than his limited bandwidth single plane frequency responses :facepalm:
 
I recommend avoiding Headphone sty. It contains primarily AI generated click bait
Ah I see, it looked a little bit strange to be as well and I was wondering if it was just a summary of the video I found. Linking to Headphone sty seemed to be somehow blocked in the editor, is this the reason for that?
 
Ah I see, it looked a little bit strange to be as well and I was wondering if it was just a summary of the video I found. Linking to Headphone sty seemed to be somehow blocked in the editor, is this the reason for that?
Please see this post.
 
The speaker he’s modding is a L100 Classic, but he compares it to Erin’s measurements of the MKII.
As it turns out, James Larson at audioholics measured the original. His setup is far superior to Danny's with elevated speaker, outdoor measurements, etc. Anyway, he did not at all measure the same droop in high frequency that Danny shows:

1778111408601.png


Here is James Larson:

image

Seems like just like Ascend, his measurements are under-reporting high frequency energy. As such, he is making these speakers brighter.

He also shows the deepest dip at 1.2 kHz whereas James' response shows that to be essentially flat.

Also, when you listen to him talk about the cabinet, he uses words like, "it is going to buzz" making me think he didn't even listen to the speaker before the mod!
 
As it turns out, James Larson at audioholics measured the original. His setup is far superior to Danny's with elevated speaker, outdoor measurements, etc. Anyway, he did not at all measure the same droop in high frequency that Danny shows:

View attachment 530579

Here is James Larson:

image

Seems like just like Ascend, his measurements are under-reporting high frequency energy. As such, he is making these speakers brighter.

He also shows the deepest dip at 1.2 kHz whereas James' response shows that to be essentially flat.

Also, when you listen to him talk about the cabinet, he uses words like, "it is going to buzz" making me think he didn't even listen to the speaker before the mod!
That’s very interesting, but how is it that Danny’s measurements look similar to Erin’s Klippel measurements, as he stated at 16:10 in his video?
Screenshot_20260507-022322_YouTube.jpg
 
Honestly, I think it would be comical at some level. I have to imagine it would be very much along the lines of this Ascend thing.

"Ackstually a speaker entirely designed and built to cross at 1KHz is not optimal when crossed at 1KHz"

(directly quoting posts are somehow giving me JSON errors for unfathomable reasons btw)
 
Please stop with this annoying ai created Pictures. Stay on topic and argue with constructive criticism.
By the way Erin measured the JBL L100 Classic MKII and Danny got the previous non MKII Version in, right? He did not notice it?
AI? You dismiss our MS paint copypaste skills just like that? This is high quality human slop, far superior and actually funny. :D
 
As it turns out, James Larson at audioholics measured the original. His setup is far superior to Danny's with elevated speaker, outdoor measurements, etc. Anyway, he did not at all measure the same droop in high frequency that Danny shows:

It's the same thing with his Revel M126Be measurements. He changed a resistor value to "bring it back up", but thankfully left the rest of the crossover design intact (with "better" parts).

It's unusual, and a bit funny. I guess he has heard of Revel's focus on off-axis response, but still he ignores it with many other speakers.

(Hastily plotted with Plot Digitizer - lower resolution than Erin's actual measurement)

Revel M126be erin vs danny.png


The video is a comedy show as usual. He takes a look at the sturdy Revel crossover and says that the air core inductors look ok, ”but they’re made in china”.
 
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The man's attitude is just stunning.

Many years ago, I used to debate creationists. It was a waste of time, in that I never did persuade a creationist, but it DID sharpen my mind and help understand how they think. This is the difference between the "ergo hoc" world view and the "post hoc" world view.

"Ergo hoc": The conclusion is reached after examination of evidence. If new evidence is found, the conclusion has to be changed.

"Post hoc": The conclusion is reached first, then evidence supporting the conclusion has to be found. Evidence that does not support the conclusion is discarded. Debate tactics such as deflection, redirection, or shutting down discussion are used. These people typically get very defensive in debates. At some level, they understand they are on shaky ground.

It appears that he has convinced himself that his CLIO is as good as your Klippel. For some measurements, the results should be exactly the same (e.g. impulse response, step response, on-axis measurements down to a certain limit). For some others, it would take him weeks to replicate what the Klippel can do in a few hours, if at all. In theory, it's possible. But I don't fancy spending dozens of hours repositioning the microphone, doing the sweep, labelling them, then processing them all in VCad. Not to mention having to do ground plane measurements for low freqs and then figuring out how to splice all the measurements together.
 
Many years ago, I used to debate creationists. It was a waste of time, in that I never did persuade a creationist, but it DID sharpen my mind and help understand how they think. This is the difference between the "ergo hoc" world view and the "post hoc" world view.

"Ergo hoc": The conclusion is reached after examination of evidence. If new evidence is found, the conclusion has to be changed.

"Post hoc": The conclusion is reached first, then evidence supporting the conclusion has to be found. Evidence that does not support the conclusion is discarded. Debate tactics such as deflection, redirection, or shutting down discussion are used. These people typically get very defensive in debates. At some level, they understand they are on shaky ground.

It appears that he has convinced himself that his CLIO is as good as your Klippel. For some measurements, the results should be exactly the same (e.g. impulse response, step response, on-axis measurements down to a certain limit). For some others, it would take him weeks to replicate what the Klippel can do in a few hours, if at all. In theory, it's possible. But I don't fancy spending dozens of hours repositioning the microphone, doing the sweep, labelling them, then processing them all in VCad. Not to mention having to do ground plane measurements for low freqs and then figuring out how to splice all the measurements together.

Yup. All of this.

Sometimes, it is simply not possible to even begin to know how to get any rational point across.

And the reason soon becomes evident; that such people are so desperately armoured against reasoning that all attempts are instantly and automatically rebuffed.

They cannot consider an alternative (evidence based) viewpoint. They are too busy formulating more nonsense replies and further self deception, before the opposing point has been made.

It’s actually much worse in so many cases.

As you say, the ‘post hoc’ stance is unremittingly resilient. And the longer any such position is held the stronger the power of denial becomes.

If such a power were measurable I suspect it would be found to be runaway exponential.

I find the whole notion a little scary.

An idiot like this Danny guy is a really small element of a growing horror to me. With creationists leading the field at full tilt.
 
[Danny]:

"You seem to be using some lay understanding of how speakers work. You certainly struggle to understand the measurements. 5 hours to get useful information? Who has time for that?

Don't waste any more of my time."


The man's attitude is just stunning.
If that's Danny's closing argument, well, that's the nail in the coffin for him. Because what it says is that five hours of his time, (which isn't in a way really his time, he can do other things in the meantime), isn't worth it. Tell that to his potential buyers of his expensive so-called upgrade kit.

Of course potential buyers want Danny to do the best job possible, which includes time and energy on diagnostics and measurements, when they buy expensive stuff from him.
 
That’s very interesting, but how is it that Danny’s measurements look similar to Erin’s Klippel measurements, as he stated at 16:10 in his video?
This are Erins measurements, Danny just kopied it from Erins Video. And Dannys measurement looks only kind of similar, thea are taken with waaay less percision and less detail! And not from the MKII version, so different speaker. But even the measurements Amir showed from James Larson show more detail and the peak at 20kHz, so thats not becaus of some average or the klippel!
And Danny took the on-axis Measurement and is talking about the estimated inroom response which is something kind of an average but more a calculatet integration of a bunch of measurements with complex mathematics. He playes down his inaccurate measurements and explain it with total missunderstood nonsense.
This are Erins on-axis measurements from the MKII:
jbl l100 mkII on axis.JPG


And this Erins estimated inroom response curve he is talking about but getting it wrong anyway:
jbl l100 mkII est in room.JPG


So much mistakes at Dannys JBL L100 Video at the end of the day and he refuses them, deletes youtube comments and makes everything more bad. Back in the days i remember him being a better person. But now i will stop wasting time to this drama.
Edit: this graphs are from this YouTube Video:
from ErinsAudioCorner
 
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