Class D amplifiers have very little phase shift

Yes, yes, I am a new here and only ever read these forums usually for a laugh, and have posted this time because I feel the need to.

 I'll post this once just for the ignorance of those that believe all Class-D have the next to no phase shift from the upper/mid right up to the highs. It has been quoted to look at graphs of x Class-D as it "only" has x phase shift and they used this to compare it to other Class-D modules. Some even being cheap subwoofer modules used.

It's false,  and those here who “consider themselves” to be EE’s should know better, you know who you are and should lay low to giving your tick of approval to this garbage.

 Because some of these comparison modules are measured with/without their output filters insitu, and the manufacturer has used Audio Precision "very high order" external “test filtering” instead for the graphs, and/or the frequency knee of the output filter they use if used, is totally different to the one it's being compared to by the one doing the comparing, which will directly effect the amount of phase shift down lower in the audio band as those of us all know.

This thread is just plain bunkum.

That helps,  it's where I thought they were measuring and that's  why the first graph was misleading they put the probes on the PCB. Not sure what jesskerry is on about I don't  consider myself to be anything other than trying to understand. 

@djones51

I don’t think the graph itself is misleading. It’s that is’ so very very rare. I have seen output impedance plots, rarely, but never one with phase also.

It’s truly something for the geeks.

Best,

E

Not sure what jesskerry is on about I don’t consider myself to be anything other than trying to understand.

Yet you were one of the first to to pat the OP (who has no idea) on the back in the other now deleted thread, without knowing as you say yourself " consider myself to be anything other than trying to understand" try to understand what I just posted above.
Good one! it’s a no wonder I don’t post.

 Because some of these comparison modules are measured with/without their output filters insitu, and the manufacturer has used Audio Precision "very high order" external “test filtering” instead for the graphs, and/or the frequency knee of the output filter they use if used, is totally different to the one it's being compared to by the one doing the comparing, which will directly effect the amount of phase shift down lower in the audio band as those of us all know.

@jesskerry

I only know of one person who could put together such a long sentence that in the end is so convoluted that it cannot be proven or disproven.  I would try to answer it, but it is the opposite of building an argument from parts that logically form a whole.

Hahahaha.