Class D

Once again, straight into product protection mode

This statement is false. I've simply been engaged in correction of misinformation. That is why I used the phrase fake news. But I could use others- ignorance comes to mind. Misleading. Deceptive. And so on. But since I don’t know/understand why you insist on posting incorrect information, I don’t use the word ’deceptive’ although due to the tenor of your posts I’m often tempted.

Again for the umpteeth time: READ UP ON THIS STUFF. Parading the same rubbish over and over isn’t winning you any accolades and isn’t impressing anyone that you know what you’re talking about.


Its easily shown that its not product protection, for the simple fact that whether my company produces an amp or not, what I have stated remains factual. Its not like our amp somehow makes it true.


It may be that you won’t get this simple fact as this has been gone over and over again and you seem to hang on to the same mythology in the face of facts (just like that same person you alluded to in your post above). Please consider just reading and educating yourself. You might find it worthwhile. If you need links to articles I can provide them. OTOH if you can find anything that debunks my comments, please produce them; I’d be interested to see. But don’t send that tired link about an amp that is obviously decades behind us.

You forgot dogmatic. If ignorance it is totally wilful. I don't think I could have explained current limiting and power limits and thermal limits any simpler or more completely, or for that matter the impacts of load.

But don’t send that tired link about an amp that is obviously decades behind us.

The 1200AS 2 is still the current Class-D module from ICEPower, what have you been sniffing.
https://ibb.co/vvwzGV5
https://icepower.dk/products/amplifier-power-modules/as-series/

The 1200AS 2 is still the current Class-D module from ICEPower, what have you been sniffing.
https://ibb.co/vvwzGV5
https://icepower.dk/products/amplifier-power-modules/as-series/

Nothing but air. However if you are suggesting that this amplifier is representative of all class D amps you would be committing an excellent example of the logical fallacy known as Guilt By Association, and it works like this: 'Because this particular amplifier has significant phase shift at 20KHz and is class D, therefore all class D amps have significant phase shift at 20KHz.'  Because its a logical fallacy, this idea is false.

Obviously ICEPower has chosen a different set of parameters for what they feel is important, which with a short look at their website, appears to be public address. At any rate there are class D amplifiers that have less than 1 degree of phase shift at 20KHz.

OK George- that one is debunked. Please proceed to the next.

However if you are suggesting that this amplifier is representative of all class D

No I defiantly don’t sunshine, but as you said

"Decades behind"!!!!

Decades! Really! It is also not that either, again just furphy from someone in product protection mode.

As you say you’ll get around that problem with "global feedback", you can throw all the "global feedback" you want at it, to fix the phase shift problem.
Every one knows "global feedback" is not a good thing in any amp, it’s a "sound sterilizer" and should only be used very sparingly if possible, just to clean things up a little, and preferably use only "local feedback".
Which won’t help your plight as you’ll need a stack of "global "feedback" that has to incorporate even the speaker output filter into it, to try to remedy this kind of phase shift problem down to 1khz 40 degrees out of phase, and 70 degrees!! at 10khz (in red). https://ibb.co/vvwzGV5

And to those many that complain about it, this is why you have this concern with Class-D sound in the upper/mids and highs. And a 1.5mhz switching frequency goes a long way to remedy it (without throwing stacks of feedback at it), like they used in the 55kg $KKKKK Technics SE-R1, and hopefully next month in the far more obtainable and affordable SU-R1000 integrated.

Cheers George