My Ultra tests

[onlyoneme]

So it’s the conditions you’re testing, not the device.

No. It's a device under some test conditions.
What's the difference if test conditions looks like full audio volume applied for a typical sinad test?

If I get a low-powered amp and try to get it to drive in efficient speakers, I’ll get distortion.

Really? Could you please explain it?

You’re constantly trying to test things in situations for which they weren't designed, and/or won’t be used in, to produce results which you feel are relevant, just because they show any difference at all.

Well, I really think that changing the volume is a common usage scenario. BTW, do you think that using a full scale single sine signal is similar to common listening conditions in the real life?

Once again, just because you can measure it, doesn’t mean you can hear it.

But you did look at the sinad values of the provided examples, right? Could you please comment it in terms of the potential audibility?

 

[onlyoneme]

I'm off. Let others evaluate arguments used by both sides of the discussion.

 

[Steve Woodhouse]

If two people do the tests based solely on your list, they would probably get different results just because they would interpret the test list differently. Details matter.


That's why I do not talk about the validity of tests in medicine or airplanes industry.

You never fly or take medicines?

You use them, but don’t feel you can justify doing so by simply saying “They’ve been tested by experts, and the tests peer reviewed and found to be correct”?

That’s little short of bizarre.

You’re implying that either you don’t take medicines or fly on planes, or that you do, but have no confidence in their safety as you’ve not tested them yourself.

Your initial point clearly implies that anyone who is not expert in a field can have no confidence in those who are.

 

[canard]

in any case...thanks to the measures for allowing us to observe what seems a real problem on the ultra, "this ultra"..and it's ironic that some here claiming "transparency" don't realize it...ca tends to prove that this is still a "cultural" ;-)

 

[Steve Woodhouse]

in any case...thanks to the measures for allowing us to observe what seems a real problem on the ultra, "this ultra"..and it's ironic that some here claiming "transparency" don't realize it...ca tends to prove that this is still a "cultural" ;-)

Who’s claiming the Ultra is transparent?

 

[Mr Ee]

Goodnight all.
Here's my contribution to this thread...

(Be excellent to each other, and party on dudes!)

 

[onlyoneme]

Goodnight all.
Here's my contribution to this thread...
View attachment 9098
(Be excellent to each other, and party on dudes!)

Aussies...

 

[steadyshot]

I'm off. Let others evaluate arguments used by both sides of the discussion.

You have a lot of patience . Conserve your energy for more meaningful activities !

 

[canard]

Who’s claiming the Ultra is transparent?

a little like this "absurde"...
Post in thread 'My Ultra tests' https://forum.wiimhome.com/threads/my-ultra-tests.3964/post-63183

 

[canard]

Aussies...

it's a shame... I especially hope for your feedback on the ultra ;-))

 

[Steve Woodhouse]

May be @Steve Woodhouse could jump in? He seems extremely knowledgable and I would highly appreciate to see his measurement results

Sorry, once more for the hard of understanding. I’ve only said this a dozen times, but I appreciate some aren’t…significantly cognitively robust to get it the first time, so here we go again.

I’m presuming the Ultra will measure well, but I’m waiting for a respected, knowledgeable and expert reviewer to check it out first.

I do not measure myself, in the same way I don’t run clinical trials on all the medicines I take. Best left to the experts.

If you’d like me to repeat this again, I don’t mind. I’m quite used to it, after spending 25 years in secondary education, working with a range of abilities.

Best wishes.

 

[Musician]

Range of frequency response, deviations from frequency response, distortion, noise, dynamic range.

As I’ve said before, the limits of these are well-documented. I ain’t doing your donkey work for you.

No, RFi can also destroy the sound in the analog stage .
You can read any DIY amplifier cookbook or :

RFI/EMI Is the Enemy

When I add up subjective observations, consider corresponding objective changes, I find myself wondering. Are we all just chasing improvements to RFI/EMI in different ways? Example, how much of the improvement in SQ from that new power cord is common mode rejection and shielding of RFI? How much ...

audiophilestyle.com

 

[Steve Woodhouse]

No, RFi can also destroy the sound in the analog stage .

In which case it would show up as noise and/or distortion.

As for ‘destroy’, let’s leave the hyperbole at the door.

 

[Musician]

In which case it would show up as noise and/or distortion.

As for ‘destroy’, let’s leave the hyperbole at the door.

It showed up in the Ultra measurements
Its good , but a bit from perfection I would say

 

[Steve Woodhouse]

It showed up in the Ultra measurements

Audible? Measurements by a professional?

 

[Musician]

Audible? Measurements by a professional?

Maybe something thats easy to make a small bit better ? Onlyoneme used a LPF and the results became even better .

As it is , its measures about as good as a Linn klimax katalyst , but maybe not quiet as good as an Eversolo dmp a8 ?

 

[onlyoneme]

You have a lot of patience .

Sometimes. But when I realize that I won't get a proof or answers which I was asking for, for obvious reasons, it's time do say "enough" and move on.

 

[canard]

Maybe something thats easy to make a small bit better ? Onlyoneme used a LPF and the results became even better .

no...they just become normal for this kind of approaches-type of chip ess etc... we had this kind of thing in the case of the plus, become normal consistent with version 2..

in the case of l ultra an even more obvious and serious problem...


let's see the rest of onlyoneme's measures....if all this does not discourage her...

 

[canard]

Canard : CMMR is the ability to supress noise from the power supply - its not a complete description of a streamers SINAD performance .

A ne5532 will show very good results with a noise free powersupply , almost as good as an opa 1612 with the same supply. In this case a high CMMR doesnt matter.

But with a bad powersupply - the opa1612 will show a 20 dB better result than the ne5532.

certainly...
except that design issues, power supply noise etc. will probably not affect the two miserable AOP outputs... that's to be feared...
(and maybe already two 1611s, who knows)
and then the idea When should we not have any power issues...
whether in the design or production, right?

in any case as it stands it doesn't
;-)

but let's see the rest of onlyoneme's thread...and maybe he will even say how this physically presents output stages (see the entries)
;-)
(external power supplies still have many advantages... )

 

[Smartplug]

You are transferring an opinion on a forum . The only known fact for the human hearing is that we can hear frequencies in 20hz-20khz and feel sub bass even beneath 20hz if it is produced at sufficient SPL levels . The same is said for frequencies above 20khz . Because you simply transfer an opinion and you do not have a deep understanding of these claims you cannot hold a conversation . Go educate yourself first and then come back with structured and to the point arguments

I am aware when there’s something like this thing in the forum things can get heat up as both will push what they believe in whether there’s facts or not.