Hi there,
I'm starting this thread because I want to know more about Class D amplification, and what other people think.
CHEERS 🙂
I'm starting this thread because I want to know more about Class D amplification, and what other people think.
CHEERS 🙂
Wouldn't it be better off in the classD forum area?
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Yes, totally vague - sorry.
I guess my first question would be:
Because it used 'switching', was the Carver Cube the first Class D amplifier or just a hint of things to come?
https://www.hifinews.com/content/carver-m-400-cube
I guess my first question would be:
Because it used 'switching', was the Carver Cube the first Class D amplifier or just a hint of things to come?
https://www.hifinews.com/content/carver-m-400-cube
Member
Joined 2003
No, it wasn't the first by a long shot.
https://en.wikipedia.org/wiki/Class-D_amplifier
https://www.analog.com/en/analog-dialogue/articles/class-d-audio-amplifiers.html
https://en.wikipedia.org/wiki/Class-D_amplifier
https://www.analog.com/en/analog-dialogue/articles/class-d-audio-amplifiers.html
That looks more like Class G to my eyes. The original magnetic amplifier is just something else.
http://www.tuks.nl/pdf/Reference_Material/Magnetic_Amplifiers/George Trinkaus - Magnetic Amplifiers - another lost technology - 2000 - includes 1951 US Navy article.pdf
WOW , such wonderful information - thank you. ( ? why had I never Googled ? )
I knew that MOSFETs with their high frequency capacity had played a part (plus their negative temperature coefficient helping)
but I just hadn't realized the 'GENIUS SIMPLICITY' involved. (hard ON hard OFF = near zero heat)
The whole PCM + evolutions thing reminds me of that quote:
"Any sufficiently advanced technology is indistinguishable from magic"
I have two questions:
What is a typical 'clock-frequency' of a modern (pcm) class D amplifier?
Are there any pictures of the Sony TA-N88?
You are on the right track. It was a Class G amp with some special power-supply.
It had a transformer which was underdimensioned from the core size point of view with a phase-controlled modulator on the primary side. It was able to deliver high peak power.
Despite its name it didn't have anything in common with a magnetic amplifier.
The oldest schematic diagramm of a class-d amp that I have seen was from WW2. It used tubes and was part of an AC power converter.
Regards
Charles
These two frequencies has no connection or similarity what-so-ever. You seem to have a long way to go, "Mister Audio" 😉
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At this point in time, are there any (non PA.) class-D amps that are considered to be the HiFi 'state of the art'?
Anything based on Hypex nCore, Hypex Nilai, Purify Eigentakt is State Of The Art. Hard to do it better than that I think.
Ikea Eneby is Speaker with Class D Amplifier, uses IT chip, has saperate outputs for tweeter and sub, sound quality is good, (can find photos of PCB online)
H
HAYK
The highest quality sound I got, superior to my numerous class A and SE triodes, is TPA3110 PBTL converted into ABD mod. From Ali you can get for $1+a pair of 670nF +2x220 ohm 2W.
H
HAYK
I would sugeest that you do not begin by looking down upon PA amplifiers, as most have more than enough fidelity to be used in a home setup. On the other hand, many HiFi products don't even have proper documentation.
Of course, the HiFis are shiny, while many PA amps are painted with dull colours (and often matt finished) so that they don't cause distractions or draw unnecessary attention (glare, reflections etc. ) when used alongside the powerful lighting setups in large venues.