Jump to content
activist38

LPSU choices, new contender.....

Rate this topic

Recommended Posts

12 hours ago, jabbr said:

 

You don’t need to be an EE or have a degree, rather the ability to read & understand basic physics. Basic. I am not talking about qualifications nor appealing to authority, rather referencing the shared understanding about electronics. Try Khan Academy — it’s terrific.

 

 Well, how does your " Basic Physics" explain the attached ?

 

These new  "screen grabs"  are from the 2nd and the 6th separate session with my L.O.G files with Martin Colloms.

 

ALL 6 sessions were POSITIVE !

 

Not that I expect the usual suspects to accept the results of a series of 6 correctly performed  "Gold Standard" DBTs by a well qualified fellow E.E. UNLESS they agree with what they expect they should be !

  

As I previously mentioned, Eloise became a HFC Forum member so she could ask Martin how the tests were performed and appeared to be happy with his explanation.

Note also that E.E. John Dyson also recently gave a detailed report of the differences he heard with my supplied comparison files, then freaked out and retracted his findings when he was told that the files had identical .md5 checksums.

He then blamed his hearing , even though his reports were 100% in agreement with the differences that I hear myself.  

https://audiophilestyle.com/forums/topic/30381-mqa-is-vaporware/page/540/  Reply #13491

 

I will not be further responding to the usual "know-it-alls" in this thread.

 I will let the silent majority of members decide for themselves.

 

I would hope that Chris will now lock this thread, as nobody from the Objective side is ever likely to change their stance .

HFC - 6th Session.jpg

Kethel ripping results second session.jpg


How a Digital Audio file sounds, or a Digital Video file looks, is governed to a large extent by the Power Supply area. All that Identical Checksums gives is the possibility of REGENERATING the file to close to that of the original file.

 

PROFILE UPDATED 26-12-2019

Share this post


Link to post
Share on other sites
6 minutes ago, sandyk said:

Well, how does your " Basic Physics" explain the attached ?

 

You are now changing the topic. My claim is that it is possible to scrub any noise from a digital stream down below an arbitrary level. 

 

I’ve also said that sending such a stream across, for example, my own fiberoptic Ethernet segment will remove any such noise on the source and eliminates source effects. 

 

I also suspect that, for example, new products such as Sonore’s opticalRendu will also be impervious to the original source stream. 

 

These are specific setups that other readers can test for themselves so no one needs to take what I say at face value.


Custom room treatments for headphone users.

Share this post


Link to post
Share on other sites
31 minutes ago, jabbr said:

 

You are now changing the topic. My claim is that it is possible to scrub any noise from a digital stream down below an arbitrary level. 

 

I’ve also said that sending such a stream across, for example, my own fiberoptic Ethernet segment will remove any such noise on the source and eliminates source effects. 

 

I also suspect that, for example, new products such as Sonore’s opticalRendu will also be impervious to the original source stream. 

 

These are specific setups that other readers can test for themselves so no one needs to take what I say at face value.

 My reply wasn't just aimed at you, and it was not changing the topic as you have had numerous shots at me recently.

 it was mainly directed at Ralf11 who seems hell bent on provoking me in order to silence me.

 

Your claim is still unsubstantiated and should be verified by the same means that you demand of others.

 You may be able to " scrub" the noise , but that does NOT mean that the file will necessarily sound exactly the same as the original.

Yes, you are Regenerating the files with what you are doing .

 

The only thing that Identical Checksums gives is the possibility of REGENERATING an A or V file to CLOSE to that of the original. How an Audio file will sound , or a Video look, is governed mainly by the PSU area and how electrically quiet the computer is.


How a Digital Audio file sounds, or a Digital Video file looks, is governed to a large extent by the Power Supply area. All that Identical Checksums gives is the possibility of REGENERATING the file to close to that of the original file.

 

PROFILE UPDATED 26-12-2019

Share this post


Link to post
Share on other sites
3 hours ago, sandyk said:

Your claim is still unsubstantiated and should be verified by the same means that you demand of others.

 You may be able to " scrub" the noise , but that does NOT mean that the file will necessarily sound exactly the same as the original.

Yes, you are Regenerating the files with what you are doing .

 

There you go twisting things again. Did I mention files? I used the term digital stream, you really really just don’t get it. do you? The fact that we are communicating despite the fact that you are upside down is all the substantiation Needed.


Custom room treatments for headphone users.

Share this post


Link to post
Share on other sites
6 minutes ago, jabbr said:

Did I mention files? I used the term digital stream

 

 So what ? They started out as files, whether they were saved locally or streamed !

4 minutes ago, Superdad said:

(Someone please remind me again: Does water spiral down really spiral down the drain in the opposite direction in Australia?)

Yes it does in the Southern Hemisphere.


How a Digital Audio file sounds, or a Digital Video file looks, is governed to a large extent by the Power Supply area. All that Identical Checksums gives is the possibility of REGENERATING the file to close to that of the original file.

 

PROFILE UPDATED 26-12-2019

Share this post


Link to post
Share on other sites
9 minutes ago, jabbr said:

Did I mention files? I used the term digital stream,

 

 

 So what? They started out as files , whether stored locally, or Streamed from a remote server on request , and your claims are STILL unsubstantiated, and Anecdotal ONLY.

There is no rule for E.E.s and another one for everybody else.


How a Digital Audio file sounds, or a Digital Video file looks, is governed to a large extent by the Power Supply area. All that Identical Checksums gives is the possibility of REGENERATING the file to close to that of the original file.

 

PROFILE UPDATED 26-12-2019

Share this post


Link to post
Share on other sites
Just now, sandyk said:

So what? They started out as files , whether stored locally, or Streamed from a remote server on request ,

 

No “they” started out as audio whether digitally sampled and transmitted as streams or to memory 

Just now, sandyk said:

and your claims are STILL unsubstantiated, and Anecdotal ONLY.

There is no rule for E.E.s and another one for everybody else.

 Tee hee hee what’s an EE? Shannon and Nyquist sitting a tree... 


Custom room treatments for headphone users.

Share this post


Link to post
Share on other sites
19 minutes ago, Superdad said:

 

Now that's funny! :D

 

(Someone please remind me again: Does water spiral down really spiral down the drain in the opposite direction in Australia?) 

Yes it does in the Southern Hemisphere.


How a Digital Audio file sounds, or a Digital Video file looks, is governed to a large extent by the Power Supply area. All that Identical Checksums gives is the possibility of REGENERATING the file to close to that of the original file.

 

PROFILE UPDATED 26-12-2019

Share this post


Link to post
Share on other sites
4 minutes ago, jabbr said:

 

No “they” started out as audio whether digitally sampled and transmitted as streams or to memory 

 Tee hee hee what’s an EE? Shannon and Nyquist sitting a tree... 

 

 Unless you can prove your claims by way of DBTs as I had to do, then your claims are no more than  anecdotal, no matter whether you are a qualified E.E. or  an Audiophile without a background in Electronics. 

 

 BYE !


How a Digital Audio file sounds, or a Digital Video file looks, is governed to a large extent by the Power Supply area. All that Identical Checksums gives is the possibility of REGENERATING the file to close to that of the original file.

 

PROFILE UPDATED 26-12-2019

Share this post


Link to post
Share on other sites
23 minutes ago, sandyk said:

 

 Unless you can prove your claims by way of DBTs as I had to do, then your claims are no more than  anecdotal, no matter whether you are a qualified E.E. or  an Audiophile without a background in Electronics. 

 

 BYE !

 

Tee hee hee. What’s a “DBT”? Instead of double blind, you are doing double deaf tests, Tommy!

 

 

Back to our regularly scheduled permathreads after a note from our sponsors ...


Custom room treatments for headphone users.

Share this post


Link to post
Share on other sites
52 minutes ago, Richard Dale said:

This was a thread about LPSU choices. You bring in your off topic file comparison stuff for about the thousandth time, wreck the thread and ask for it to be locked.

I said this in post 287 on page 12 and also repeated similar later :
 "This is off topic and should be discussed elsewhere or via PMs "
but several members, including Kumakuma and Ralf11, wouldn't let it go.


How a Digital Audio file sounds, or a Digital Video file looks, is governed to a large extent by the Power Supply area. All that Identical Checksums gives is the possibility of REGENERATING the file to close to that of the original file.

 

PROFILE UPDATED 26-12-2019

Share this post


Link to post
Share on other sites
29 minutes ago, sandyk said:

I said this in post 287 on page 12 and also repeated similar later :
 "This is off topic and should be discussed elsewhere or via PMs "
but several members, including Kumakuma and Ralf11, wouldn't let it go.

I've no idea why you didn't follow your own advice then, and stick to the topic of LPSU choices.


System (i): (iUSB3.0 Nano/RPi 2/Moode > 2Qute+MCRU psu; Gyrodec/SME V/Ortofon 2M Black/EAT E-Glo Petit/Magnum Dynalab FT101A) > Glow Amp One > Klipsch RP-600M

System (ii): iUSB3.0 Nano/RPi 2/Moode > Bel Canto uLink+AQVOX psu > Chord Hugo > (Tandy LX5; JBL LSR305 ; Audeze LCD-3)

Share this post


Link to post
Share on other sites
3 hours ago, Superdad said:

(Someone please remind me again: Does water spiral down really spiral down the drain in the opposite direction in Australia?)

Do threads spiral out of control in the opposite direction there?

Share this post


Link to post
Share on other sites
On 4/19/2019 at 12:17 AM, sandyk said:

 

An  earlier Marantz CD65 CD player that I had for many years ,had the ladder resistors replaced by 1% through hole types.

 The removed Surface Mount resistors in many cases varied by quite a bit more than 10% when measured. :o

You can get 0.1% SMD these days, 90's technology is dated. Yawn.

Share this post


Link to post
Share on other sites
7 minutes ago, marce said:

You can get 0.1% SMD these days, 90's technology is dated. Yawn.

 

 I am aware of that.

I would be surprised if too many manufacturers used them though due to cost.

 


How a Digital Audio file sounds, or a Digital Video file looks, is governed to a large extent by the Power Supply area. All that Identical Checksums gives is the possibility of REGENERATING the file to close to that of the original file.

 

PROFILE UPDATED 26-12-2019

Share this post


Link to post
Share on other sites

SMD isn't that bad in terms of cost.  1% tol and lower is pretty common these days.  Don't even need SMD for that precision.  I used .1% RCD thru hole resistors in my tube head amp power supply and love them.

 

Cost on the other hand, several dollars each, SMD would be a fraction of that.  You can find wholesaler deals if you are patient and good at hunting though, military contracts lose funding and liquidate assets all the time.

Share this post


Link to post
Share on other sites
15 minutes ago, BrokeLinuxPhile said:

SMD isn't that bad in terms of cost.  1% tol and lower is pretty common these days.  Don't even need SMD for that precision.  I used .1% RCD thru hole resistors in my tube head amp power supply and love them.

 

Cost on the other hand, several dollars each, SMD would be a fraction of that.  You can find wholesaler deals if you are patient and good at hunting though, military contracts lose funding and liquidate assets all the time.

1% thick film SMD resistors cost as little as a few dollars for a reel of 5000. Thin film is more expensive but only needed where the cheaper types are too noisy.

Share this post


Link to post
Share on other sites

Been working more with microcontrollers so been doing more with SMD.  Small wattage axial metal film leads are just too damn delicate and break all the time.  I'm blind as a bat with nerve issues in my left arm, so if I can do it anyone can.  Plenty of bright light from multiple angles, and I take plenty of breaks.

Share this post


Link to post
Share on other sites
17 hours ago, marce said:

You can get 0.1% SMD these days, 90's technology is dated. Yawn.

 

Yeah of course the 0.01% metal film SMD resistors are a bit pricey ($15) in small volumes: https://www.mouser.com/ProductDetail/Vishay-Precision-Group-Foil-Resistors/Y16245K00000T9R?qs=sGAEpiMZZMutyvjUqez%2F3ScD3w29bKsRxOtdNkkiL6Y%3D

 

but 0.1% thick film are roughly $0.25

 

 


Custom room treatments for headphone users.

Share this post


Link to post
Share on other sites
16 hours ago, Monge said:

What Is your opinion on the design of

 

http://www.faradpowersupplies.com/

 

and the new BOTW P&P ECO mk. 2

 

https://www.sbooster.com/botw-pp-eco/

 

Thanks In advance.

 

The first one has no details regarding its operation, though a read through the blurb gives us a hint:

"resulting in a very stable and clean, battery like, power input for the final low" 

and in the Q&A, it mentions the supercaps are being used as a filter bank, with a following regulator, a LPS with step down transformer front end. perhaps.

The second, well they use audiophile and audio grade often enough so it should be good... the bespoke fixed cable with a great lump on the end tickles my EMC senses a bit, as does the general purpose plastic case, interchangeable cable ends and other hints to a mass produced generic PSU.

Without any figures or measurements who can tell though.

Share this post


Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now

×
×
  • Create New...