Vanderkooy and Lipschitz discuss this in their paper, Feedforward Error Correction in Power Amplifiers JAES Volume 28 Issue 1/2 pp. 2-16; February 1980, it really is time we got with the programme!.
Absolutely guys, a feedforward error correction of a class D with a lightweight but extremely linear class A is doable. But, given the OP's demonstration of different amplifier topologies, he/she has a LOT of studying to do.
As far as a need for such error correction, given how good many monolithic class D amps are, is that multiple order of magnitude increase in complexity (and need for precision components) all that beneficial?
As far as a need for such error correction, given how good many monolithic class D amps are, is that multiple order of magnitude increase in complexity (and need for precision components) all that beneficial?
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You won't know until you try it, that's why we are here!, those who question matching, cost and benefit belong in a marketing conference 🙂
Cheers. 🙂
Do understand, no less, that I do enjoy absurd overkill for its own sake, but at the same time, I'd enjoy helping others actually *finish* projects. 😀
Do understand, no less, that I do enjoy absurd overkill for its own sake, but at the same time, I'd enjoy helping others actually *finish* projects. 😀
Hi,
Depends on what your arguing about. Build a small class A that sounds nice.
Turbo it using feedforward with a Class D amplifier. In theory using the
feedforward topology the Class A amplifier will fix any faults of class D.
Its only a matter of time IMO that valve + Class D will be common.
Not for ultra low distortion, but for a valve sound with some juice.
rgds, sreten.
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I have done current dumping, I listen to my home brewed complementary output stage quad 405 based circuit. 🙂 Class D plus error correction is next on the hit list, but since the COD 405 sounds so good, its not a priority.
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