Well I just try to understand some things like the higher distortion if looking at the current, where it exactly comes from, and if there could be some possibility of attenuating it.
This thread is amusing. People talking of amps as if they were feeding dummy loads, looking at their distortion numbers, talking about the "sound" they have!!!.
Just forgetting audio amplifiers are just used to excite speakers in real life. Which, despite all our efforts, remain musical instruments which react in a very complex way to these excitations. And that the back EMF of the speakers will be added to the feedback signal the amp will have to deal with ...
When the oversimplification of the thinking of some technicians replaces the curiosity of the one who presides over scientific research, and the religious faith in what they have been taught replaces in their way of thinking the doubt which is the basis fundamental to the scientific process, we see every day the level of stupidity and self-satisfaction in which humanity is gradually sinking.
The Corona virus crisis was a good demonstration of this on a global scale.
Caricatural.
Professor Raoult made few remarks to put double-blind randomized clinical trials into perspective which immediately made me think of the comments some here have about ABX blind listening.
Just forgetting audio amplifiers are just used to excite speakers in real life. Which, despite all our efforts, remain musical instruments which react in a very complex way to these excitations. And that the back EMF of the speakers will be added to the feedback signal the amp will have to deal with ...
When the oversimplification of the thinking of some technicians replaces the curiosity of the one who presides over scientific research, and the religious faith in what they have been taught replaces in their way of thinking the doubt which is the basis fundamental to the scientific process, we see every day the level of stupidity and self-satisfaction in which humanity is gradually sinking.
The Corona virus crisis was a good demonstration of this on a global scale.
Caricatural.
Professor Raoult made few remarks to put double-blind randomized clinical trials into perspective which immediately made me think of the comments some here have about ABX blind listening.
I am VERY curious: any flat earth believers here, please step forward!
I offer a free copy of my speaker crossover software for anybody who has the balls to admit it!
I offer a free copy of my speaker crossover software for anybody who has the balls to admit it!
A lot of people here are engineers. No way an engineer could be a flat earther.
But if you go to youtube, about half the people posting are flatties. I think a lot of them actually believe it. This amazes me.
Edit: does your software work on a flat earth?
Does it work on flat speakers? Sorry, I had to.
But if you go to youtube, about half the people posting are flatties. I think a lot of them actually believe it. This amazes me.
Edit: does your software work on a flat earth?
Does it work on flat speakers? Sorry, I had to.
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Don't fool yourself, I know at least one, and he's active. I gave up on him quite some time ago.
It depends what you want to achieve. You could flatten the impedance curve to a degree.
It would not help. It is the NONLINEARITY of the speaker impedance that creates current distortion even in case of distortion free voltage drive. Simple Ohms law, linear voltage divided by nonlinear impedance results in nonlinear current. It is frustrating that many DIYers do not understand and cannot apply even the simple Ohms law. Without understanding Ohms law any discussion on audio is useless.
Yes, unfortunately yes. Usual circles ...
You know, this is the source of frustration and silence.
You know, this is the source of frustration and silence.
Thank you Pavel, yes I have read it (I was the one who linked you pages)
What I wanted to say or bring into the discussion is - can we reduce the total distortion (of the system) albeit staying within the boundaries of the (with common speakers) required voltage drive, maybe allowing for a max. ±0.25 dB deviation of ideal FR, due to a non-flat impedance curve.
It would be in line with what late Mauro Penasa tried to measure and demonstrate.
The effect of 0.5R vs 0R will result in a slightly different frequency response but once that is EQ'd out (which of course is paramount), the precieved difference will be neglegible, it is just too small a change of source impedance to change "fine print" except for some more exotic speakers that dip down to 1ohm or so at some points in their impedance curve.
OTOH, when the response change is not corrected for, it might be just that alone which is responsible for a preference/difference and it could as well be had by simple pre-EQ.