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Negative feedback in audio amplifiers: Why there is no ...
https://www.edn.com/negative-feedback-in-audio-amplifiers-why-there-is-no-such-thing-as-too-much/
At the peril of stating the obvious, here's the simplified example of a feedback loop as one might find it in an audio amplifier: Figure 1: Simplified feedback loop diagram. In Figure 1, s is the complex frequency 2πjf. B (s) is usually a constant, namely the attenuation of the feedback network written as a gain of 1 or less.
Negative feedback in audio amplifiers: Why there is no ...
https://www.edn.com/negative-feedback-in-audio-amplifiers-why-there-is-no-such-thing-as-too-much-part-2/
This article originally appeared in Linear Audio, a book-format audio magazine published half-yearly by Jan Didden. [Part 1 began with a look at the theory behind feedback loops.]The controversy Control theory is a vital and standard part of engineering studies: the effectiveness of negative feedback to keep jet-fighters airborne, ferries afloat and nuclear …
Is Too Much Amplifier Negative Feedback Bad? | …
https://www.audioholics.com/audio-amplifier/amplifier-negative-feedback
It is only controversial in consumer audio, and then only specifically in power amplifiers. This dates from early solid state amplifiers that were thought to use a lot of feedback, but that only did so at really low frequencies. Over most of the audio range the feedback loop didn’t do much. Unsurprisingly those amplifiers sounded rather bad.
Audiophile Myths About Amplifier Negative Feedback ...
https://www.audioholics.com/audio-amplifier/amp-myths-negative-feedback
Reports of amplifiers with lots of feedback in the 70’s were Bigfoot sightings. “I’ve seen an amp with a ton of feedback and I’ve got a fuzzy photograph to prove it.” People thought they were listening to a high feedback amplifier, didn’t like what they heard, concluded feedback was bad and a myth was born.
Why has an audio amplifier negative feedback? - Electrical ...
https://electronics.stackexchange.com/questions/58510/why-has-an-audio-amplifier-negative-feedback
Negative feedback corrects this by trading unused gain for higher linearity (lower distortion). An amplifier with too large an open-loop gain, possibly in a specific frequency range, will additionally produce too large a feedback signal in that same range. This feedback signal, when subtracted from the original input, will act to reduce the ...
Negative Feedback - Learn About Electronics
https://www.learnabout-electronics.org/Downloads/amplifiers-module-03.pdf
The Negative Feedback Amplifier in Closed Loop Mode A basic negative feedback arrangement is shown in Fig. 3.1.2 where the phase reversing amplifier has a fraction of its output (V out) fed back and added to the input (V in) so as to reduce the amplitude of the input signal. The arrows show the relative polarity of the signals and it can
Feedback in Audio Amplifiers.
https://www.angelfire.com/electronic/funwithtubes/Amp-Feedback.html
The feedback would try to regulate out their effect. One interesting note, the Amplifier is a Model D-10 made by the Newcomb Audio Products Company, Hollywood Calf. There also is a notation of patents used which belong to AT&T and Western Electric. I guess negative feedback was still covered when this amp was made.
Do No Negative Feedback Amplifiers Sound Better? | AVS …
https://www.avsforum.com/threads/do-no-negative-feedback-amplifiers-sound-better.926202/
In response, marketing departments have made claims of products with "Zero Negative Feedback." In truth, every audio amplifier, from SET (Single-Ended Triode) to push/pull bipolar, relies on feedback to simply cover the bandwidth required by audio, as well as maintain linear operation. All amplifiers use feedback, period.
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