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@AsciLab

Hello, I have two questions regarding the C6B.

1000070556.jpg


Question 1: What is the optimal listening height for the C6B?
A. At the midpoint between the tweeter and woofer (the “acoustic center” you mentioned before)., or
B. At the same height as the tweeter

Question 2: If measured from the bottom of the speaker, what are the respective heights of A and B in centimeters?

Thanks in advance
 
Ideally listening (ear) height should be at/near the acoustic center as specified by manufacturer.
 
NanoGuidingStar said:
@AsciLab

Hello, I have two questions regarding the C6B.

View attachment 470803

Question 1: What is the optimal listening height for the C6B?
A. At the midpoint between the tweeter and woofer (the “acoustic center” you mentioned before)., or
B. At the same height as the tweeter

Question 2: If measured from the bottom of the speaker, what are the respective heights of A and B in centimeters?

Thanks in advance
Click to expand...
I’d like to recommend to listen at acoustic center “A”. But it won’t be sensitive about the ear height. Our vertical dispersion is quite linear and wide than average.

And the acoustic center height is 22~23cm from the bottom.
 
Last edited:
65c5ba0c98a26c6d81859d92e54d5a59e2333eaf.jpeg


I think it looks more harmonic like this.

What is the reason for not using the 8 inch ceramics?
 
Raiju said:
65c5ba0c98a26c6d81859d92e54d5a59e2333eaf.jpeg


I think it looks more harmonic like this.

What is the reason for not using the 8 inch ceramics?
Click to expand...

We need more sensitivity than Ceramic driver has. They have same motor structure while the paper cone is lighter than ceramic cone.
So we can get more higher sensitivity and lower Qts with paper cone driver in this case.
 
NanoGuidingStar said:
@AsciLab

Hello, I have two questions regarding the C6B.

View attachment 470803

Question 1: What is the optimal listening height for the C6B?
A. At the midpoint between the tweeter and woofer (the “acoustic center” you mentioned before)., or
B. At the same height as the tweeter

Question 2: If measured from the bottom of the speaker, what are the respective heights of A and B in centimeters?

Thanks in advance
Click to expand...
Don't worry about that with these speakers. I won't tell you what I am doing while listening to music but my ears are all over the place and they keep sounding good!
 
JohnnyNG said:
How important is "non-magnetic" in terms of sound quality?
Click to expand...
Non-magnetic means no hysteresis.
Iron components makes hysteresis and it affects the odd harmonic distortions.
Many of good drivers use a lot of copper or alu in the motor to get more linear Le and lower distortion. But what’s the point if there is iron material through the signal path?

One small tip is using magnet to find out magnetic material in the crossover components. They will stick to the magnet.

Of course for the bass driver, sometimes Iron core coil can be used to get lower DCR. Some low crossover needs high level of inductance. So air core coil may have too much DCR to use. Though Iron core coil will make distortion, that kind of hysteresis affects much less in bass range but more in mid to high frequency.
 
AsciLab said:
Non-magnetic means no hysteresis.
Iron components makes hysteresis and it affects the odd harmonic distortions.
Many of good drivers use a lot of copper or alu in the motor to get more linear Le and lower distortion. But what’s the point if there is iron material through the signal path?
Click to expand...
Is there any technical documentation of this issue? Magnetic hysteresis doesn't seem like it should have any impact on audio signals, but I wouldn't mind being proven wrong.
 
Matias said:
See the Purifi papers, very interesting.

purifi-audio.com

This Thing We Have About Hysteresis Distortion

purifi-audio.com purifi-audio.com

purifi-audio.com

Some Speaker Problems That Needed Solving

purifi-audio.com purifi-audio.com
Click to expand...
Hm, if I'm understanding correctly this is more due to the generation of spurious voltage than the sort of magnetic hysteresis the Wikipedia article is talking about.

However, the final paragraph of that Purifi article makes me groan:
Hysteresis distortion isn’t something that we simply decided to big up in search of a USP. It’s very real, very different from what you’d expect and not at all subtle. It takes the form of popping or crackling noises that go off at almost but not entirely random moments. You can’t rely on masking to render it inaudible because cause and effect are not coupled in time and the distortion level tracks the signal level. It is not like normal distortion that the ear just files away as coloration, or can otherwise get used to. Left to its own, hysteresis produces a recognizable grainy texture in the sound, a blanket of fuzz that always stays just this side of audible, taunting and infuriating like an itch you can’t scratch.
Click to expand...
Seems to go off into subjectivist la-la land at the end, even if the rest of the article seems to be rather technical and describing a real phenomenon. I'd need to see the results of some blind ABX testing to verify that this is an audible concern. I've certainly never noticed a "blanket of fuzz" from any of the speakers I've listened to, many of which I'm sure are using iron-core inductors.

In any case, I fear I may be driving this thread a bit off topic.
 
kyuu said:
Hm, if I'm understanding correctly this is more due to the generation of spurious voltage than the sort of magnetic hysteresis the Wikipedia article is talking about.

However, the final paragraph of that Purifi article makes me groan:

Seems to go off into subjectivist la-la land at the end, even if the rest of the article seems to be rather technical and describing a real phenomenon. I'd need to see the results of some blind ABX testing to verify that this is an audible concern. I've certainly never noticed a "blanket of fuzz" from any of the speakers I've listened to, many of which I'm sure are using iron-core inductors.

In any case, I fear I may be driving this thread a bit off topic.
Click to expand...
I have some experiences of comparing air core coil and iron core coil. I was using them for midrange and I matched the curve same each other. Then I recorded two of them separately to compare speedly. It was quite interesting. Though they had almost same response with only different H3 distortion, the sound was quite different. As subjective words, air core one has smooth, moisture, transparent sound. But the other one using iron core coil has more aggressive, thin, harsh sound.
I know these description can be allergic to someone, But I believe you will have similar result if you test it. I’m not talking about immeasurable magic. It can be obviously seen in measurement.
 
AsciLab said:
I have some experiences of comparing air core coil and iron core coil. I was using them for midrange and I matched the curve same each other. Then I recorded two of them separately to compare speedly. It was quite interesting. Though they had almost same response with only different H3 distortion, the sound was quite different. As subjective words, air core one has smooth, moisture, transparent sound. But the other one using iron core coil has more aggressive, thin, harsh sound.
I know these description can be allergic to someone, But I believe you will have similar result if you test it. I’m not talking about immeasurable magic. It can be obviously seen in measurement.
Click to expand...
So to be clear, the measured difference between the two coils was the amount of H3 distortion?
 
Astonishing manufacturer openness & responses.
Truly game changing.
Your products will (& deserve to) completely disrupt the loud speaker market.
The thread is also a learning lesson in modern speaker design.
Luckily I grabbed a pair of C6Bs from PuriteAudio.
A6Bs look fantastic but I'm now intrigued by the C8Ts in comparison.....
 
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