I am not changing anything. I just have a different approach.
Also a 100ohm-to-1K Zout amplifier is not really a true constant current amplifier but is gets close. 1 Mohm is.
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It should be obvious that you can't make a nonlinear system by combining linear systems, but sadly it appears that this is not obvious to some people.45 said:
Unfortunately this is untrue. Mostly I talk of things I know. When I stray into areas I don't know so well I can be sure that someone will correct me, and if they do that with good humour then I am grateful.
I never said that. I do believe that you need a different speaker design, to have different damping, but not necessarily a different driver design. Why not address what I say, and not what I do not say?
As I didn't say it I do not need to defend it.
There is still plenty of back EMF, but the amplifier ignores it. You could argue that it is the voltage drive which gets no back EMF, because the EMF has to be lost across the driver resistance as it cannot impose a voltage across the source (because the source has zero impedance). I am puzzled why so many of your technical statements seem to be the exact opposite of the truth.
Again with this obvious thing. You haven't provided any explanation for the obvious so far.
I don't think so. You do need different driver design in the first place but it is all about linear behavior.
When I wrote there is no back EFM it was referred to the amplifier. I didn't say anything different.
If statements are taken out of context they can become everything, including the opposite.
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I am afraid that this is one of those things which is either obvious or beyond your understanding. Linearity contains no nonlinearity, so cannot produce nonlinearity. Try to make a nonlinear equation by linearly combining linear equations - it cannot be done.45 said:
Would you please make up your mind? You criticised me for allegedly saying that a different driver was needed (which I did not say) now you say that a different driver is needed. Why is something "total nonsense" when you think I said it but is now perfectly sensible when you say it?45 said:
But the full back EMF appears at the amplifier terminals. You said there is no back EMF. Perhaps what you meant to say is that the back EMF is present but ignored in current drive?45 said:
"Statements taken out of context" is the classic excuse offered by politicians and other public figures when they say something which is false or considered wrong (or even unsayable in this current illiberal political/social climate) and they know that they cannot deny saying it.45 said:
Yes you are. First you state that the same driver can be used for voltage or current drive. When I mention that Esa Merilainen and others have found that you need different optimized drivers for the two situations, you go on about the book, you say 'I repeat, getting a linear behavior is the real thing. All the rest is peanuts.... ' and start about output impedances.
Can I ask you, why are you here? Do you want to have a discussion where everybody gets smarter, or you just want to throw out random statements and the hell whether they make sense or not? We have a lot of patience to explain things but not if it is not appreciated.
Jan
You are just groping in the dark and go on with this nonsense. I never said that a non-linear equation results form linearly combining linear equations. You are clearly missing one term in completing the equation and that's what introduces non-linearity. So I am afraid there is nothing obvious. End!
Yes. I also added that likely that sort of amplifier was cited having in mind a different perspective (i.e. it is an amplifier with no NFB).
Excuse me
You're wearing out my joie de vie
Grabbing those good years again
I want to be alone
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Someone else crept in again
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I'm looking for Lost Angeles
Soaking up the sin again
I want to be alone
You got the money back, that's okay
Who needs a Cadillac anyway
I got the medicine, make you see the light
Call me in Alaska if it all turns out right (Alright)
Excuse me please
You're standing on my memories
Stealing souvenirs again
I want to be alone
Leave me alone, I want to be alone
(repeated several times)
You got the money back, that's okay
Who needs a Cadillac anyway
I got the medicine, make you see the light
Call me in Alaska, if it all turns out right
Excuse Me - Peter Gabriel
You're wearing out my joie de vie
Grabbing those good years again
I want to be alone
Excuse me
I'm not the man I used to be
Someone else crept in again
I want to be alone
Excuse me please
I'm looking for Lost Angeles
Soaking up the sin again
I want to be alone
You got the money back, that's okay
Who needs a Cadillac anyway
I got the medicine, make you see the light
Call me in Alaska if it all turns out right (Alright)
Excuse me please
You're standing on my memories
Stealing souvenirs again
I want to be alone
Leave me alone, I want to be alone
(repeated several times)
You got the money back, that's okay
Who needs a Cadillac anyway
I got the medicine, make you see the light
Call me in Alaska, if it all turns out right
Excuse Me - Peter Gabriel
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If fact I didn't say linearly combine them. It doesn't happen! What does it mean? There is something else to be considered that is not negligible if I control the voltage and it is, with very good approximation, absent if I control the current.
Now that I have accused to be a liar you can wonder forerer.
Lol. Now the argument has come full circle to the proportional(linear) debacle.
Proportional - MATHEMATICS
(of a variable quantity) having a constant ratio to another quantity.
It is sad to watch some people argue (and they think they are winning)
Proportional - MATHEMATICS
(of a variable quantity) having a constant ratio to another quantity.
It is sad to watch some people argue (and they think they are winning)
Jan, he must be having a good laugh at this for he cannot be serious. I think the word is trolling🙄
Again no proof! I wrote first: "I never said that comes from the combination of linear forces" that you have omitted here. That's really sad.....
Not a complete loss. This stuff gets hammered into my head this way so not only myself but others learn from these discussions whether the intended person of interest understands it or not.
-Thanks
It took me till yesterday to figure out that this was an attempt at a discussion of current vs. voltage drive of speakers. Of course there is a vast amount of previous work of varying merit but as I recall most of it uses standard engineering terminology, hypotheses, models, analysis, etc.
I suspect the OP would be happier here. Elsinore Speakers DIY
I suspect the OP would be happier here. Elsinore Speakers DIY
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