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Some good stuff on SS Electronic audio circuits


JGale

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http://education.lenardaudio.com/en/12_amps.html

"Solid State amplifiers have superior technical specifications compared to valve amplifiers.   But when solid state amplifiers were first introduced it was noticed that they sounded flat and lifeless in comparison to well made valve amplifiers.   Also a solid state amplifier had to be twice as powerful as a valve amplifier to sound as loud  -  Why ?    Unfortunately little to no research was done.

Amplifiers and speakers have traditionally been marketed independently of each other.   There has been little interest in how amplifiers and speakers interact.  Valve technology was tediously assembled with manual labour whereas Solid state technology is mass produced at a fraction of the cost.   Economical rationalism and modern marketing easily pushed aside the older valve technology.   Page 8 has a detailed explanation of voltage-drive and current-drive, which enables us understand why Valve and Solid state amplifiers sound so different."

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5 hours ago, Armitage said:

You can drive a tube amplifier into quite a bit of distortion before it becomes objectionable to most... and transistor distortion is obvious and disagreeable when playing back clean music.

Tube amps in distortion accentuate the second order harmonic and transistor amps in distortion accentuate the third order harmonic (for that nails on the blackboard effect).

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