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The Audiophile's Project Sourcebook by an Electronics Engineer
This is a site where we can read of a review of a book written by "very
talented and experienced Electronics Engineer", G. Randy Stone. Mr Stone while explaining the basic electronics stuff he also talked about the some myth and urban legends. http://www.electronics-tutorials.com...project-source book.htm Make sure you read his own seal electronics. Selling DIY parts and his Sweet Amp which is " the finest performing audio power amplifiers available at any price". Surprisingly, not cheap. and some excerpts from his FAQ 6. Aren't there complex characteristics or nuances of sound that cannot be analytically interpreted when comparing amplifier types? Isn't the "best" amplifier a matter of personal taste? It has been scientifically proven on a number of occasions and with a variety of tests that there are no mysterious sonic qualities undetectable to analysis equipment. Therefore, the determination of quality is a relatively straightforward process of measuring the sonic accuracy between the amplifier's input and output. In other words, the "best" amplifier will be the most "transparent." Obviously, it is every individual's right to have a personal sound preference, but, generally speaking, professional sound engineers choose power amplifiers with the lowest distortion and highest reliability. 7. How about Class-A audio power amplifiers? Don't they sound better than Class-B designs? To make the statement that one amplifier sounds better than another poses the requirement that the differences in sonic reproduction be discernable to the human ear. It has been proven that the human ear is capable of detecting high-order odd harmonic distortion as low as 0.3%. Crossover distortion, as produced by Class-B operation, is the worst kind of distortion, being high-order odd harmonics across the entire audio bandwidth and existent at virtually all signal levels. The worst-case conditions for crossover distortion is at very low volume levels at high frequencies (i.e. close to 20 kHz). Even under these extremes, several of the amplifier kits in this catalog are typically capable of THD levels better than 7 times lower than the minimum audible level. Therefore, in these or similar designs, it is quite impossible to detect a difference between Class-A and Class-B operation based on human perception, as long as all other performance variables are identical. 8. Do all of your amplifier kits incorporate high levels of global negative feedback? Are high feedback levels detrimental to sonic quality? The belief that certain sonic problems result from high levels of global (i.e. overall) negative feedback is a myth. In reality, high levels of feedback improve virtually every performance aspect of audio power amplifiers. Good luck! p.s. Is RAHE a all Male forum. I have not seen any female contributor, yet. Wonder why? Will be posting on that soon. |
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"Chelvam" wrote in message
... This is a site where we can read of a review of a book written by "very talented and experienced Electronics Engineer", G. Randy Stone. Mr Stone while explaining the basic electronics stuff he also talked about the some myth and urban legends. His name is Slone, not Stone. Norm |
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