Powered speakers show audiophiles are confused

@donavabdear , apologies for not ignoring the man child. I will try better.

Had heard a lot about the PS power plants, but never dug very far into them so read a bit and talked to one of my EEs. The PS units are not true isolated regens so that may be why they don't solve it. Odds are good that the extension cord is getting you onto the same phase as your other equipment. Shouldn't matter, if you can, plug everything into a single phase. Easiest way to test is plug everything into a single power bar. Just don't turn it loud and you should be able to test.

@invalid , a page or so back, I posted what Stereophile measured for SNR, 90db on balanced, but that pre-amp has really high output and they may have measured that 90db at the full output level. At a normal level, it could be 10-20db lower. That would be audible. The unbalanced are even noisier.

@thespeakerdude  I don't think that the BHK preamps are consistent from one example to another, some people claim no noise and others have a lot of noise. They didn't all have high sensitivity speakers either. 

@thespeakerdude

I will try better

No worries, I don’t think you could get any worse. If you ever get some actual speakers start a new thread so we can celebrate OK?🙄

@donavabdear 

Easiest way to test is plug everything into a single power bar

LOL, this guy will lead you from one dead end to another, feel free to play around, just don't spend any actual scratch.

@donavabdear hate to ask a dumb question, but the buzz does go away when you disconnect the audio input to the sub?

This thread started about powered speakers and confusion. I see a LOT of confusion in the last few posts that might derail this thread.

You don’t need tubes, power bars, exotic setups, multiple systems, and on and on people. The point of this thread is the advantages of powered speakers, not the confusion running amuk among the multiple posters here.

So look, let’s get down to it. To get a GREAT result for a very reasonable cash outlay here is an example. Two active speakers plus one preamp/streamer with built in room correction. That is all you need to get a great result. Don't let the confused posters make this complicated. Not your problem and certainly not mine.

I took two Paradigm active speakers plus one Paradigm PW Link preamp (entry level) and BOOM. Notice how flat the graph is even before the room correction. That is due to a large part of the engineers success building the speaker. I didn’t need to stress about amps, cables, yada, yada, yada. This setup would work great for a big room, an office, a bar, etc: