Ascilab A6B Speaker Review

[phoenixdogfan]

The sentence describes the optimization process as follows:

Step 1: Design the LW EQ with a flat LW response as the target.
Step 2: Using the LW EQ as a starting point, re-optimize the EQ with the Predicted Preference Rating (“Score”) as an additional performance indicator in the global metric.
This results in two separate and independent EQs.

To achieve the intended response, the correct EQ must be used:

• For the LW response, use only the LW EQ.
• For the Score response, use only the Score EQ.

In the case of the A6B, each EQ consists of 8 biquads.

Ok, thank you. I was not seeing the additional biquads on Score until I hit page down. Again, thanks.

 

[Sokel]

Thanks for the review!
Out of interest, what is the test track?

His usual one is Fading Sun from this album:

https://www.discogs.com/release/3060086-Terje-Isungset-Winter-Songs?srsltid=AfmBOopNd7HK_ckouIJZXc0S5jyIT0MM5837qUxC-0UGLgK749BYyb71

About the speakers, they seem to do everything right, at the right set-up nothing will be missing probably.

Distortion test is review's highlight though, that's a good one!

Thanks Amir!

 

[Hayabusa]

take advantage of the full response down to 30 Hz

Should this not be 40Hz? Its 15dB down at 30Hz and 3dB down at 40Hz

 

[amirm]

Should this not be 40Hz? Its 15dB down at 30Hz and 3dB down at 40Hz

The target/usable extension is F10 which would be 10 dB down. And hence "near 30 Hz" comment I made.

 

[Svensson]

His usual one is Fading Sun from this album:

https://www.discogs.com/release/3060086-Terje-Isungset-Winter-Songs?srsltid=AfmBOopNd7HK_ckouIJZXc0S5jyIT0MM5837qUxC-0UGLgK749BYyb71

About the speakers, they seem to do everything right, at the right set-up nothing will be missing probably.

Distortion test is review's highlight though, that's a good one!

Thanks Amir!

Cheers, I was also confuse by which track as I was looking at the 17 track playlist.

 

[daniboun]

Nice review thx @amirm
Some other pictures attached so you can see the enclosure

Considering the price-quality ratio, I would lean more towards the C6B that goes down @-3db at 56.4Hz and @-6db at 45.4Hz BTW :

Measurements for speaker AsciLab C6B

www.spinorama.org

 

[AsciLab]

좋은 리뷰 감사합니다 @amirm
내부 모습을 자세히 보실 수 있도록 다른 사진들을 첨부했습니다.

가격 대비 성능을 고려했을 때, 저는 C6B 쪽으로 더 마음이 기울겠습니다.

Measurements for speaker AsciLab C6B

www.spinorama.org

That enclosure was made for our very first domestic sales. Currently the enclosure design is changed.

 

[daniboun]

That enclosure was made for our very first domestic sales. Currently the enclosure design is changed.

Thanks for the info. Could you please share pictures of the upgraded one ?

@AsciLab As far as I know the first version of the enclosure was made from a material largely composed of Aluminium Hydroxide. Did you swap with MDF now to control costs ?

 

[a4eaudio]

I have to wonder if this would have been better served with ports than PRs...

The Purifi woofers are almost impossible to design with ports. The port probably needs to be 16 inches long.

 

[Maiky76]

The target/usable extension is F10 which would be 10 dB down. And hence "near 30 Hz" comment I made.

FYI:

Score = 12.69 - 2.49*NBD_ON - 2.99*NBD_PIR - 4.31*LFX + 2.32*SM_PIR
with LFX = log10( f_6dB );

The response @-6dB is used, I always add it into the spinorama title: f6dB = 36.621Hz in the A6B case.

 

[SorenTyson]

Great to see scientifically designed drivers being implemented in an equally impressive science based way by another company leading to SOTA performance Combination of smart people and Technology.

Drivers designed in a Danish city mostly known for Viking Boats and the Gothic Cathedral. Speakers designed in the hyper modern Seoul.

 

[firedog]

Pair these with a properly integrated sub or two, and you'd have a killer true full range system for a reasonable cost. For those who can't do without very low bass.

 

[Raiju]

I quickly skipped to my reference track for deep bass.

What is the track used?

 

[amirm]

What is the track used?

It was posted earlier. The youtube version is not very good so get the lossless version if you can:

The deep bass is very near to the start so quick to test. Keep your volume very low when you first play it as it could cause damage.

 

[Good Vibes]

Objectively and subjectively, they have left me without pants.

This made me giggle as in my part of the world, pants are known as Y fronts lol

 

[Rja4000]

Thanks very much for this review.

Your new analysis is very interesting and makes a lot of sense.
At least we have an objective way to qualify SPL response, which, for me, is a key factor in a speaker choice: I like a speaker that is able to sing loud or quiet at will.

This is not perfect: saturation may also happen in medium or high drivers, which the "compression" plot may show as well.
But it gives a very interesting insight on the low frequency limitations.

Now about this very speaker: the overall low distortion is for sure worth its value.
The whole question for me is: if you want higher SPL anyway, is the Purifi woofer worth it, since you'll need a Sub ?
In other words: for above 100dB SPL purpose, wouldn't a smaller (and cheaper) box from the same family with a subwoofer be a better option ?

 

[amirm]

The whole question for me is: if you want higher SPL anyway, is the Purifi woofer worth it, since you'll need a Sub ?

You don't need a sub at all if your playback requirements are modest or average.

 

[Rja4000]

You don't need a sub at all if your playback requirements are modest or average.

Sure.
96dB is quite loud already

 

[valerianf]

Measurements are looking good but sensitivity is really low.

 

[moleman]

Fantastic!!
Is there a minimum listening distance for these?
I'm in a room on the smaller side.