How to shift the operating range of an amplifier while keeping the speaker volume constant?

[MaxwellsEq]

'Internal friction' is now being used (in some circles at least) as a blanket term for almost anything where molecules move and heat is generated

Thank you. Interesting - not seen this used before. I guess it's a handy blanket term for multiple underlying mechanisms.

 

[antcollinet]

Well, you are a kind of bossy individual aren’t you? You have not contributed to the post either.

As for your “proof” that you insist is needed a simple google search with AI returned the results below.

2 takeaways

1. Sticky behavior at rest - aka minimum force needed to make the cone move
2. Low-level signal loss - hard limiter effect.

End of discussion.

View attachment 508586

Would you like to provide your prompt, as required by ASR AI policy.

Thanks

(Or "Oh, AI said it. It must be true")

 

[NTK]

To put things in perspective, direct radiating drivers works in the mass dominated region of operation (of a mechanical mass-spring-damper system). Loudspeaker drivers are designed to minimize the influences from the nonlinearities in driver suspension compliance and damping. To show that it is a problem, you'll need more than "qualitative" handwaving. You need to use real numbers from measurements or realistic simulations to show the magnitudes of the effects.

Below is from Dr @jackocleebrown's "How does a loudspeaker cone generate acoustical pressure?" thread,

How does a loudspeaker cone generate acoustical pressure?

Introduction This post is inspired the thread "Which way is up", started by @René - Acculution.com, and especially by a comment from @BeerBear. In "Which way is up" René shows that when replaying a sine wave, the maximum pressure coincides with the point when the loudspeaker cone is at maximum...

www.audiosciencereview.com

 

[Waveform Fidelity]

Good. No evidence supporting your claim is given in the AES or Klippel references.

If you don’t believe the AI generated response, I suggest you go and hunt down AES papers and talk to Klipel to satisfy yourself. And by the way its not my claim is it? Its long established research

 

[TurtlePaul]

Audio Engineering Society (AES) and Klippel - I’ll take those references as credible over any ASR thread

I read this Klippel paper and it does not match Gemini’s assertion. Is it another paper you are referring to?

https://www.klippel.de/fileadmin/klippel/Files/Know_How/Literature/Papers/Dynamical%20Measurement%20of%20Loudspeaker%20Suspension_Klippel.pdf

 

[bmc0]

If you don’t believe the AI generated response, I suggest you go and hunt down AES papers and talk to Klipel to satisfy yourself.

For the third time now: the points you specifically referenced—"Sticky behavior at rest" and "Low-level signal loss"—are not discussed at all in the AES or Klippel references (yes, I checked). The source of those specific claims in the AI response is an old ASR thread where such behavior is asserted without evidence.

The Klippel paper does mention low-level nonlinearities caused by sliding-contact friction, but in the measurement apparatus only, not the device under test.

And by the way its not my claim is it? Its long established research

It is your claim because you have not provided any credible supporting evidence.

 

[Lambda]

I'm thinking Waveform Fidelity is just trolling us...

One last effort to Explain to you how wrong you are.
"Everything is a spring"
Therefore Everything has Stiffness.
Stiffness is AI answer:
"stiffness or the spring constant, is defined by Hooke's Law as the force applied divided by the displacement"

So for something Have Zero movent with a small force Something Devided by Zero.
Divided by zero gives infinite stiffens:
Ai Answer:

In short:
No, there is no physical, real-world material with infinite stiffness.
Infinite stiffness implies that a material will not deform at all (zero strain) regardless of the amount of stress applied to it. This is a theoretical idealization, often referred to as a "rigid body"

So every force no matter how small will cause a defection.

From now on please stop trolling in this Thread and if you want to argue about it do it with Ai or open a new thread. but this is of OT in this thread.

It’s only 0.5 V.

Is this measured with a sine wave? at 0dBFS?
I suggest measure Again at relay loud listening level. so we and you know what you need as a maximum.

Regardless to say A 400W amp is not the right choice if you not even use 0.003W