atomicbob's SMPS Noise Nuke for HP amps with external SMPS

Probably has to do with how light reflects off the analog real mirror , I’m assuming.

I mean that is the biggest difference I can think of.

 

I don’t think any screen (even very expensive pro monitors) can currently replicate the full color gamut that our eyes can see and while 60fps is better than less there’s a reason gamers want 120+ now. As screens get better the differences will shrink and undoubtedly the digital screens will gain capabilities the analog ones can’t but we’re not there yet.

It’d be interesting to see the effect of different power supplies on different parts of the audio chain but that sounds like a big job and people who care probably aren’t buying the type of gear that’d benefit from an upgrade the most.

 

Emphasis on ‘ state of the art’ as Amir says for SINAD.
‍

 

It’s one thing I love about my benchmark gear. It needs nothing as far as clean power etc.
just really good engineering. And a good budget.

unfortunately the reality is, that most manufacturers either don’t make good power supplies or their budget doesn’t allow them etc.

So, sometimes a bit of help is needed.

and then there is the debate on what we can hear as far as noise is concerned from SMPS and LPS.


And what’s further frustrating in most cases , is that when you go on a DIY forum and ask, you are treated like a Cretan and either told ‘ don’t be a fool, none of that will make a difference’. Or with a myriad of other insults since you don’t know as much about electronics.

thankfully there are people like on here and Thoren L, who will patiently assist me in not only getting something that works, but will explain what is going on in great detail.

no one likes being talked down to. Especially where you are 55.

 

you know the other thing besides being creepy is that solderdude actually seems super knowledgeable and made two tube headphone amps.
But NEITHER of those amps did he present even on ASR. Was it for fear of making a tube product that they consider there verboten and inferior tech?
I would want my ‘ friends’ or sounding board to at least share some of my tastes for what I was doing.

anyway. It’s super odd and as you said creepy. Like stalking almost.

 

In an attempt to bring this thread back to the main topic here is a teaser.

Something brewing:

 

That’s a big boi

 

What's the ESR on that thing? Can't be very good. Or can it?

 

why not ?

I’m pretty sure ESR on larger caps is better than smaller ones. Why people connects smaller ones in parallel to bring the ESR down low. That way lots of smaller ones can get super low ESR.
Don’t know if there is any other benefit.

someone correct me if I’m wrong on that

 

Because sometimes my memory is dyslexic and I remember things backwards that's why lol. Looked a few things up and I am wrong

 

6 mOhms

Ha! I resemble that remark!

The choke is also big. This version will need a small output inductor to limit device inrush current. Will probably use an output switch rated for 20 amp DC.

 

Yeah 6mOhms is nothing.

 

what’s the difference of using one cap or several in series or parallel. Besides the capacitance change of running in series or parallel.

Are there any other benefits in running one cap?

cheers

 

Can someone else comment on this please?

what is the measurable effect of using larger filter caps?

let’s say using 100F or 200F instead.


Cheers

 

The original NoiseNuke™ was designed to be a cost effective way to reduce SMPS noise.
There is nothing cost effective about NoiseNuke+™ , this is a "because I can" project. The choke and capacitor combined cost are approximately $100 US alone. However the noise reduction is much greater. See LTSpice simulations:


AC mains fundamentals reduced by 40 to 43 dB


High frequency noise reduced by 100 to 110 dB

 

Thank you sir.
Yeah I did some reading up on that and I saw that lowering ESR is mentioned . Didn’t know about the stability.

 

I'd be cautious about relying on sims here. I measured some Hammond chokes (higher inductance, mind you) and the self resonance frequency is well below 100kHz. Yours looks like a great pick, though. I'm certain a big fat cap like that will also have a fairly low SRF, so it may benefit from some bypassing.

I attached a few choke measurements that I took using an AP and a resistor divider. You may want to try something similar with your Dscope to finesse the filter a bit.