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Testing audiophile claims and myths - Page 203  

post #3031 of 6524
Quote:
Originally Posted by esldude View Post
 


Yes except for phase delay which is what was being shown in the video.

 

http://www.kennethkuhn.com/students/ee351/square_wave_testing.pdf  This shows such results.

 

If you merely reduced low frequency content you get a drooped response between the ends of the square wave.  If there is phase delay you get the sloping tops and bottoms.  A coupling cap would cause reduced LF response and do so by delaying the lower frequencies.  Which gives the sloping result.  The initial edge will rise and the trailing edge troop.

 

But that doesn't mean LF is more prone to clipping.  The higher leading edge is due to higher frequencies present, not lower ones.  The lower ones that somewhat cancel some higher harmonics are delayed and you see that in the trailing edge where the same higher harmonics are more suppressed. 

Ahh - you're right. I'd forgotten the impact of the phase shift. Sorry about that one (clearly, I need to go in search of more caffeine this morning).


Edited by cjl - 8/18/14 at 1:10pm
post #3032 of 6524

Here's some Schiity advice:

 

Regarding power chords for use with Schiit's highest end amplifier:

Quote:
11 Power Cord. Plug the end of the supplied IEC cord in here. You can also use fancy audiophile types, but they won’t really do anything—what about the thousands of feet of crap copper cables in your walls, huh?

 

Regarding fuses for use with their highest end amplifier:

Quote:
Hey, can I replace the fuse? Sure, you can, but it won’t make it sound any better. Don’t use anything other than a 3A slo-blow 5 x 20mm fuse.

 

Excerpts from the manual of the new Ragnarok

 

Cheers

post #3033 of 6524
http://www.theguardian.com/technology/2014/aug/21/mp3-cd-24-bit-audio-music-hi-res

A very misleading article. Listening set up by an audio store. No blind testing/ probably different masters used.
Edited by James-uk - 8/21/14 at 10:10am
post #3034 of 6524

interesting article...but definitely flawed

post #3035 of 6524
Thread Starter 

Various links repaired and a tidy of the OP. Glad to see this is still continuing. Thanks.

post #3036 of 6524
Ie
Edited by LivingVoice - 9/13/14 at 12:20pm
post #3037 of 6524
Science is hard.
Edited by Hapster - 9/14/14 at 6:02pm
post #3038 of 6524

living the dream. I would expect that cable to make the girl I like to love me(but then it better not be in an incremental way, else I'll have to buy a lot of cables).

post #3039 of 6524
Quote:
Originally Posted by castleofargh View Post

living the dream. I would expect that cable to make the girl I like to love me(but then it better not be in an incremental way, else I'll have to buy a lot of cables).
I thought girls were more interested in tubes.
post #3040 of 6524
Quote:
Originally Posted by headdict View Post


I thought girls were more interested in tubes.

cables, tubes... same difference. anything long that you can plug in ;)

post #3041 of 6524
Quote:
Originally Posted by headdict View Post


I thought girls were more interested in tubes.

:normal_smile :

 

 

Anyways. I have a question.

AFAIK the entire point of tubes is to color the sound, to make it less hi-fi for the sake of more pleasing sound. Then what is the point of trying to make a neutral tube? If one wants neutrality, surely a solid state amp would get you there easier...

post #3042 of 6524
Quote:
Originally Posted by Dark_wizzie View Post

normal_smile%20.gif


Anyways. I have a question.
AFAIK the entire point of tubes is to color the sound, to make it less hi-fi for the sake of more pleasing sound. Then what is the point of trying to make a neutral tube? If one wants neutrality, surely a solid state amp would get you there easier...
Fully agree. There is no point. Even girls would not be impressed by neutral tubes. Solid state, on the other hand, ...
post #3043 of 6524
Quote:
Originally Posted by Dark_wizzie View Post
 

:normal_smile :

 

 

Anyways. I have a question.

AFAIK the entire point of tubes is to color the sound, to make it less hi-fi for the sake of more pleasing sound. Then what is the point of trying to make a neutral tube? If one wants neutrality, surely a solid state amp would get you there easier...

Although you could say that, it is possible to design for very similar results with both solid and hollow state devices. Tim de Paravicini is one of the designers with this capability that springs to mind first.

 

My introduction to E.A.R. of Tim de Paravicini :

 

 

 

One has to really look closely to find what makes these mono E.A.R. 519s tick ; good ol' EL519 pentodes. One of the amps I would not mind, and one of the handful tube designs I could live with happily ever after. One of the very very very few tube amps that has distortion low enough to be comparable with good solid state. But it is the exception confirming the rule that tube amps are coloured compared to solid state - if opportunity presents itself, worth auditioning !


Edited by analogsurviver - 9/15/14 at 7:43am
post #3044 of 6524

I'm not saying that there's no way for tubes to ever be transparent. I just don't get the point. Why spend so much money, so much inconvenience when a measly $150 Odac can achieve the same thing? What is the point?

post #3045 of 6524
Quote:
Originally Posted by Dark_wizzie View Post
 

I'm not saying that there's no way for tubes to ever be transparent. I just don't get the point. Why spend so much money, so much inconvenience when a measly $150 Odac can achieve the same thing? What is the point?

I wish good tubes could be a whole lot less expensive. That can not be done.

 

I also wish that I did not hear some truly great tubes - because they are waaaaay over my budget. 

 

No, semiconductors can not achieve the same thing - regardless of price. But they are infinitely more affordable and practical for 99.999......99 % of real world users. $150 ODAC or equivalent plus sizeable music library is better than

a Kronzilla and (say) 7 super duper audiophile (SA)CDs...

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