0 volts is 0 volts; it can be neither DC nor AC.And strange that 0 Volt DC over a coil resulting in 0 Ampere current are intelligently deducted as this:
There is no such thing as 0VDC AFAIK except in reference to an actual corresponding ±nVDC.
I have contempt for those who confuse a lack of specific knowledge, with stupidity.
I fully agree. It only becomes stupid if those who lack of specific knowledge stubbornly put up deviant claims that fly in the face of well understood phenomena.
Again, snake oil exists, because the sound changes when you do 'dumb things' - and the normal explanation from the 'experts' is that it's all in your head.
Under those circumstances it's practically guaranteed that the 'good/bad oil' will constantly ooze and spread ...
Snake oil exists because of $$$ and the gullible doesn't know any better.
'Smart experts' will produce a cost effective product, or explain a technique, or evolve an overall mechanism that achieves the same effect as the costly snake oil - without insinuating that the consumer is brainless, because he can perceive an effect ...
No no,no where is the profit to be made from that? The more outrageous the explanation, the more it has to cost because you know, all that time they spent coming up with the BS to begin with. Then again, crystals hanging from a cable is pretty cost effective when they do have the same effect which is NOTHING.😛
Talking nonsense on details can indicate either of:john curl said:Tisros, what is happening here is sometimes called 'parsing' among engineers. That is to give a 'one up' by quibbling over a specific statement, written in real time, with its intent understandable to just about everyone, but criticized for its 'accuracy' by someone who just wants to look 'wiser' than another.
1. fundamental misunderstanding
2. temporary slip-up or a bit more thought required
Querying the nonsense can help distinguish between these two quite different situations. Generally what happens is that someone who understands but just needs to think a bit harder will thank the people questioning him, for provoking him to better understanding. The one who doesn't understand will usually get defensive and eventually insulting, and may make even more silly statements.
In either case the person on the receiving end can feel a bit uncomfortable (but only temporarily in the case of 2) and others may then weigh in on the side of the nonsense and create further confusion and also further tension.
As I wrote: If you apply 0.001Hz the cone will move in and out to the full xmax with my drivers.
So do my drivers. Actually, any driver I ever saw does this. Should they not?
jan
A good example is how you pronounce 'Gstaad'
Depends on whether one asks a German, or a Swiss.
Most others can't get it near decent out of their mouth anyway, which makes nitpicking about phonetics hilarious either way.
(the US movie business has Ed Asner a lot to thank for)
Difference between the layman and the expert. As such, it may indeed be a rather good example.
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So do my drivers. Actually, any driver I ever saw does this. Should they not?
It depends on the magnitude of the applied voltage. If it's low, then you won't get to Xmax. If it's high enough, you will. If Ray's drivers reach Xmax with a low applied voltage, they're faulty.
Or very high compliance, ie very soft suspension and/or very high magnetic efficiency.....If Ray's drivers reach Xmax with a low applied voltage, they're faulty.
Is high compliance a good characteristic for OB speakers, assuming that appropriate band limiting (LF roll out) is applied ?.
Dan.
Or very high compliance, ie very soft suspension and/or very high magnetic efficiency.
Even then. If the displacement is not linear with applied voltage (we're talking low frequency here, so I = V/R), then the driver is distorting by definition.
edit: No, you're right- that just means low acceleration to the limit if it's DC, and maybe/maybe not if it's LF depending on the actual travel limit.
Mass/Force = Acceleration ?...
It is assumed in this discussion that full mechanical travel is not quite achieved/violated (ie driver kept within linear range).
Dan.
I'm not quite understanding you there...ie how does high compliance and high sensitivity (high magnetic efficiency... ie = high force wrt applied voltage) cause low acceleration ?.......edit: No, you're right- that just means low acceleration to the limit if it's DC, and maybe/maybe not if it's LF depending on the actual travel limit.
It is assumed in this discussion that full mechanical travel is not quite achieved/violated (ie driver kept within linear range).
Dan.
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0 volts is 0 volts; it can be neither DC nor AC.
There is no such thing as 0VDC AFAIK except in reference to an actual corresponding ±nVDC.
I can measure between two points and see: 0V DC and 2V AC then I can measure between two other points and see: 2V DC and 0V AC.
Does 0V DC look different than 0V AC?I can measure between two points and see: 0V DC and 2V AC then I can measure between two other points and see: 2V DC and 0V AC.
Or are you just restating my post?
I'm not quite understanding you there...ie how does high compliance and high sensitivity (high magnetic efficiency... ie = high force wrt applied voltage) cause low acceleration ?
Low acceleration is caused by low current.
I was being sarcastic . However truth would be nice also. P.T Barnum was very successful in gaining trust without the need for truth. Thus snake oil greasing the wheels of commerce by unjustly gain trust.Truth:
The wheels of commerce are greased with trust.![]()
You know me, I can not speak in English.
I do not have any degree in electronics either.
All I see here is an unique speaker, in all of its details.
Excellent design, great craftsmanship, even if it is only a prototype.
I do not understand people as well.
They are ridden only on words, but no one asks this:
And how does it sound?
May be here not I am the only envious one.
I do not have any degree in electronics either.
All I see here is an unique speaker, in all of its details.
Excellent design, great craftsmanship, even if it is only a prototype.
I do not understand people as well.
They are ridden only on words, but no one asks this:
And how does it sound?
May be here not I am the only envious one.
These guys could show the alchemists of old a few things eh, how to turn a load of **** into a pile of gold - the modern way.
With quite a few so called "snake oil" products the sound produced by a system is altered, sometimes for the (subjective) better, sometimes for the (actual) worst.
The sadness is that those which improve a set up's sound do so only marginally and - and this is the rub - at a cost far in excess of most other solutions....such as in extreme cases trading-in the system and upgrading!
The producers of snake-oil do not consider the DIY sector as a target audience.
I agree, our own preconceptions seem to direct our attention towards that which we already believe might make an improvement. Remove that belief and the 'improvement' often disappears, but not always.
The fact that many people think their system can sound better one day and worse the next means that our perceptions can vary without us changing anything and although mains pollution can play a part, I don't think it's the whole story.
I thought my system sounded flat a few days ago but when I swallowed a mouthful of coffee, my ears 'popped' fluid build up (snake oil?) due to a cold virus cleared a bit and suddenly I had a massive 'upgrade' for the price of a cup of coffee 😀
The fact that many people think their system can sound better one day and worse the next means that our perceptions can vary without us changing anything and although mains pollution can play a part, I don't think it's the whole story.
I thought my system sounded flat a few days ago but when I swallowed a mouthful of coffee, my ears 'popped' fluid build up (snake oil?) due to a cold virus cleared a bit and suddenly I had a massive 'upgrade' for the price of a cup of coffee 😀
The producers of snake-oil do not consider the DIY sector as a target audience.
Could have fooled me.
Does 0V DC look different than 0V AC?
Or are you just restating my post?
It looks a lot different!
In one case when I look at the meter, I see that it is set to an AC range. In the other case it's on a DC range.
You might think you are safe, I bought a fairly nice artisanal sourkraut and learned that it needed this Memon - RationalWiki This is goofier than any audiophile thing I have seen in years. I definately will bring a jar down to SY and Jan to try.
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