AsciLab speakers are about to launch

[JSmith]

Thank you for remembering me.

No worries mate, we're not going to forget you that fast at ASR.


JSmith

 

[thewas]

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AsciLab C6B

Specification

- 2-way Bookshelf Speaker
- Dual Passive Radiator
- 1" Alumina Ceramic Dome Tweeter with Custom Waveguide and Phase Plug
- 6" Alumina Ceramic Woofer
- LW 4th Order Crossover
- 1.1kHz Crossover Point
- Size : WxHxD / 197x385x265mm(except binding post)

Measurements

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Great extended measurements set, even more considering their very reasonable price, wish you a deserved commercial success with them!

 

[thewas]

Some nice directivity animations:

Source: https://gall.dcinside.com/mgallery/board/view/?id=speakers&no=376662&search_head=110&page=1

 

[ascilab]

AsciLab C5B

Specification

- 2-way Bookshelf Speaker
- Dual Passive Radiator
- 1" Alumina Ceramic Dome Tweeter with Custom Waveguide and Phase Plug
- 5" Alumina Ceramic Woofer
- LW 4th Order Crossover
- 1.1kHz Crossover Point
- Size : WxHxD / 176x362x230mm(except binding post)

Measurements

[Edited 2024.9.19]

 

[peniku8]

Some nice directivity animations:

Source: https://gall.dcinside.com/mgallery/board/view/?id=speakers&no=376662&search_head=110&page=1

At first I thought the animation showed the difference in close field to far field radiation at different frequencies (which would've been interesting but ofc required direct access to Klippel data!) but then realized this is simply just scrooling through the frequencies, 'pulling in' the graph like a black hole from the bottom
Never seen this, but looks quite cool!

Those speakers look mighty fine and the performance is great. The price is really good too, this is a no-brainer recommendation for a passive bookshelf speaker. Nice work!

 

[ascilab]

At first I thought the animation showed the difference in close field to far field radiation at different frequencies (which would've been interesting but ofc required direct access to Klippel data!) but then realized this is simply just scrooling through the frequencies, 'pulling in' the graph like a black hole from the bottom
Never seen this, but looks quite cool!

The Contour Plot provided by Klippel includes full-range frequency and radiation pattern information in a single graph, which can be challenging for beginners to interpret at a glance. To make it more intuitive, I exported the original data from the Klippel Contour Plot and created separate radiation patterns for each frequency. This approach is expected to help beginners easily understand the graphs.

 

[peniku8]

The Contour Plot provided by Klippel includes full-range frequency and radiation pattern information in a single graph, which can be challenging for beginners to interpret at a glance. To make it more intuitive, I exported the original data from the Klippel Contour Plot and created separate radiation patterns for each frequency. This approach is expected to help beginners easily understand the graphs.

I prefer (normalized) contour plots over anything else and it's the only directivity graphs I make of my own speakers, but I agree, you have to explain those if somebody isn't familiar with them. I'm not sure if the alternative visualization you do is the gif I replied to or if those are simple polars, but I like the 3D contour visualization that spinorama.org has, such as this:

It's harder to identify and pinpoint small faults in these, but it's a nice way to get a general idea of what is happening in the sound field.

 

[NTK]

The Contour Plot provided by Klippel includes full-range frequency and radiation pattern information in a single graph, which can be challenging for beginners to interpret at a glance. To make it more intuitive, I exported the original data from the Klippel Contour Plot and created separate radiation patterns for each frequency. This approach is expected to help beginners easily understand the graphs.

May I ask what the animated plots show? The angular coordinate should be self explanatory. Each plot shows one frequency, so I would think the "r" (radial coordinate) represents distance from the loudspeaker. However, in the plots there is no sign of acoustic far field 1/r distance attenuation (and listeners should be in the far field). Some of the plots also show non-monotonic behavior with the radial coordinate (SPL increases with "r" instead of decreases).

 

[ascilab]

3D contour visualization that spinorama.org has, such as this:

The 3D contour visualization image you attached also seems easy to understand at a glance. By importing and processing the original NFS data, it should be possible to generate similar images.

I also created a 3D Balloon image that allows you to see both horizontal and vertical radiation patterns simultaneously.

 

[LIΟN]

It's like an early Christmas present. It's like a product that makes you excited to see the plots.
It feels like everything a lot of people have been wanting and craving in a speaker. and the little things like animated balloon and polar plots really speak to the maker's philosophy and attention to detail. So nice!

 

[ascilab]

However, in the plots there is no sign of acoustic far field 1/r distance attenuation (and listeners should be in the far field). Some of the plots also show non-monotonic behavior with the radial coordinate (SPL increases with "r" instead of decreases).

The area from the center of the circle outward does not represent distance, but rather indicates 1/12 octave frequency bands. For example, in the frame labeled as 2000Hz, the center circle represents 1888Hz, and as you move towards the outer edge, the frequency increases, reaching 2117Hz at the border.

The distance from the speaker to the person in the image is approximately around 8 feet, and you can estimate it based on the person's proportions.

The dashed line indicates the -6dB point, showing the angle at which each 1/12 octave band is radiated.

 

[SDC]

Source: https://gall.만두서버.com/mgallery/board/view/?id=speakers&no=376662&search_head=110&page=1

AFAIK, link to dc is not allowed because that site is full of ads.


BTW, these are great speakers... Hope foreign ASR members get chance to listen one day!

 

[098765]

Happy to see another brand utilizing NFS well.

 

[pierre]

I added the measurements to spinorama.org, thanks a lot @ascilab!
Here is the C5B against the Neumann KH120 II:

and with autoEQ they are even closer: (ref).

 

[CJH]

Very nice work! Looking forward to more information and availability.
CJH

 

[thewas]

I added the measurements to spinorama.org, thanks a lot @ascilab!
Here is the C5B against the Neumann KH120 II:

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and with autoEQ they are even closer: (ref).

I prefer the directivity of the Neumann a bit more but that is still nitpicking on the highest level:

 

[Chester]

@ascilab are you going to go the whole way and send samples to Amir for a full review?

 

[ascilab]

I added the measurements to spinorama.org

Thank you for uploading the data to spinorama.org. The final sales version will have rounded edges as shown in the rendered photos registered on spinorama.org, so it is expected to show a smoother response compared to the current measurements. The current measurements are from a version without rounded edges. Once we obtain the final version data, we will send it to you again.

 

[ascilab]

@ascilab are you going to go the whole way and send samples to Amir for a full review?

Once the final sales version is completed, we will send a speaker to Amir for review if the opportunity arises. The current version, without rounded edges, also has all the Klippel NFS data, so if there is any specific data you are curious about, please let us know. We can provide the data aligned with Amir's review graph and scale.

 

[oldandintheway]

Are the measurements at spinorama.org flipped? The summary says the smaller version goes deeper, is flatter and has a higher tonality score.