Genelec 8361A Measurements and Multitone comparison with other speakers.

[Nuyes]

Hi, I measured a pair of Genelec 8361A.
And I have attached multitone distortion comparison data with other loudspeakers, so I hope enjoy it.




Frequency response

This is 3-way loudspeaker.

I'm using near-field measurement(LF) and window gating(5ms, 1m distance) to get a frequency response,
so I can't measure perfectly(of this design).

Therefore, I hope you enjoy this data(Frequency response) only for fun.




Next,

Directivity

Likewise, they have a 5ms window.

Beamwidth

Polar plot

THD

Measured at 85/95dB [email protected]

Very clean!





Next is THD comparison. (Sample A and B)

The owner of these loudspeakers told me, "The 3rd HD is slightly different."
So, I measured them.

It's interesting.
Sample B is higher at 85 dB SPL, but mitigates back to the same level at 95 dB SPL.

But I know this is a tricky nitpicking.
They're still close to perfection.




Next,
Multitone test

85dB [email protected]

The data limited to 80Hz or higher, and the deviation between samples are all beautiful.





Multitone test(Increase level)

76dB [email protected] ~ 96dB [email protected]

Most impressively, the measurement data of 76 dB SPL was not measured properly because it was low enough to be buried in the background noise of the measurement environment.

This speaker is insanely clean.
And furthermore, even when we increased the level from 86dB SPL to 96dB SPL, MD didn't grow any more.





Compression test

Wow.
I'm really lost for words.
(This is not because I am not good at English.
I have a Google translator, LOL)






Next,
Frequency response deviation between the 2 samples.

Very little deviation.







I hope you enjoy these data.







Next, part2.

 

[Nuyes]

It's part2 now.
Multitone test comparison


The speakers used in this comparison are the products I measured before.

We selected and compared some products that have good multi-tone distortion performance.
Among them are personal DIY works from other Korean.



Genelec 8361A vs 8351B

BeAR159
This product is custom-made by Jinsung Ko in Korea.
(Currently sold out.)

KEF Reference 1 Meta

KEF R11

Panda MK1 by Jinsung Ko.
This work is a DIY.
(He also made the BeAR159.)

KEF R3

Arendal 1961 Tower

Arendal 1961 Monitor

Arendal 1723 Monitor S THX

Kali Audio IN-8

The following is a comparison at 96 dB [email protected]
This time, the tone used for the measurement is not a flat curve, but a music curve.




The fundermental level of this measurement data is -40dB.
So consider the +40 dB offset from data and enjoy it comfortably.





Genelec 8351B

BeAR159

KEF Reference 1 Meta

KEF R11

Panda MK1 by Jinsung Ko

KEF R3

Arendal 1961 Tower

Arendal 1961 Monitor

Arendal 1723 Monitor S THX

Genelec 8331A

Kali Audio IN-8

Finally, ported/sealed comparison data for speakers that officially provide port cap.





KEF R3

KEF R11

Arendal 1961 Tower

I hope my poor English has not caused you any inconvenience.
Enjoy these data and have fun discussing them!

 

[Nuyes]

@js_k0914 Nice work! Panda MK1 and BeAR159.

 

[Laserjock]

Which of these tested is the best bargain?

 

[tifune]

Which of these tested is the best bargain?

it depends on your circumstances but I'd lean toward used R3, usually can be had for $1200 shipped in US. Less if you're patient

In-8 also great for the price, not really a looker like R3. Whether that matters to you... Would need to know more to give any meaningful answer

 

[Nuyes]

Which of these tested is the best bargain?

I also think KEF R3 is the best option if the budget is limited.
It is generally excellent in terms of performance that the public expects from loudspeakers.

 

[Jason K]

@js_k0914 Nice work! Panda MK1 and BeAR159.

Thanks for posting them. And I realized now I didn’t notice to you that I changed my account! My bad

 

[Soniclife]

Very interesting measurements, thanks for posting them.

KEF R3

This measurement looks odd, I don't see why sealing affects the mid and tweeter a lot.

 

[Nuyes]

Thanks for posting them. And I realized now I didn’t notice to you that I changed my account! My bad

Very interesting measurements, thanks for posting them.


This measurement looks odd, I don't see why sealing affects the mid and tweeter a lot.

It could be a leak from a official sponge to block the port.

Or it could be a QC problem for the measured sample.

So, I wanted to get samples for additional measurements because there was nothing to know exactly, and an anonymous user decided to send me a pair of samples.

I'm going to measure them this Saturday.

 

[abdo123]

Sample B is higher at 85 dB SPL, but mitigates back to the same level at 95 dB SPL.

This is a tell-tale sign that the noise floor between measurements changed and / or is higher than the level of distortion. there is no other logical explanation.

 

[GXAlan]

Any Samsung/Harman speakers to test?

 

[Nuyes]

This is a tell-tale sign that the noise floor between measurements changed and / or is higher than the level of distortion. there is no other logical explanation.

It is possible to automatically repeat the measurement several times and calculate its average to eliminate the impact of the noise floor(random noise).

And this difference was also found in mid unit nearfield measurements.

 

[Nuyes]

Any Samsung/Harman speakers to test?

I haven't measured it yet except for Infinity's center speaker.

 

[Kervel]

Nice measurements, thanks! I was surprised that the Arendal bookshelf has so low MD (even better than the tower in the Arendal series). The reason is that Erin's review shows it to roll off very early. If you dont play deep bass, it wont distort either I guess.

 

[Nuyes]

Nice measurements, thanks! I was surprised that the Arendal bookshelf has so low MD (even better than the tower in the Arendal series). The reason is that Erin's review shows it to roll off very early. If you dont play deep bass, it wont distort either I guess.

I agree with you.
And because they also have a difference in the volume of the box, I'm guessing that even if they're in the same sealed mode, there's this difference.

 

[Nuyes]

It's part2 now.
Multitone test comparison







KEF R3
View attachment 252706

I thought the MD difference on this data was too big, and there was a big question about this.

Meanwhile, someone sent me a pair of R3.

Before look at the measured data, I have something to explain.

This is entirely my mistake,
I had already measured R3 once in April 2022 (existing data), and at that time I had not properly organized the project files of Klippel software for measurement.

Therefore, there was a mistake in the SPL setting for this re-measurement, and this measurement was conducted at 82 dB [email protected], about 3 dB lower than usual.

For this reason, I inform you in advance that this measurement is impossible to compare fully with the old data.


However, I measured a pair in the same condition.
The deviation data between the two samples is significant.

Data from sample A.
In addition to the 82dB [email protected] test, we have enclosed data that limits the test signal below 80 Hz.






Now it's the comparison data.
Ported mode and both sealed mode(sponge & blanket) were measured.

The reason I did this was because I had to leave open the possibility that the high MD of the previous measurement was due to the leakage of a official sponge.

It's very clean!

The sample B is also clean.



Certainly, Sponge doesn't seem to be at fault.








This is a comparison between two samples.

No significant difference was found.












And this is a measurement at 93 dB SPL.
(Genelec 8361A : 96dB [email protected])

And let's compare it to the old data that I measured in April 2022.

This is the conclusion so far.

Of the three R3s measured, MD increase by closed mode was found in only one sample.

Therefore, this seems to be a problem with one sample itself, which was previously measured.





And while I was measuring this pair, I also measured the frequency response deviation between the two samples.

The deviation around 1kHz may be a sample problem, but I think it's a little different.

The owner of the loudspeaker saw the 'Shadow Flare Position Impact on Frequency Response' issue introduced in Erin's Audio Corner (EAC), and then repaired it himself.
(Just press it.)

But he is also human, so it is difficult to push the shadowflare of the two samples equally, and I think this is contributing to the response deviation around 1kHz.

And apart from this, a deviation from the tweeter was found.



This pair of samples has a neighboring serial number.

I think this measurement is good to solve the question about MD(Sealed mode) of KEF R3.

 

[Sancus]

Thanks for these great tests. I don't suppose you have compression measurements of the 8351B? I am curious.

 

[outfaced]

interesting indeed ... refernce meta 1 with the worst cost/distortion ratio
the small kali actually quite good for the money
good work !

 

[Nuyes]

Thanks for these great tests. I don't suppose you have compression measurements of the 8351B? I am curious.

Here you are!

 

[Sancus]

Here you are!

Thank you!