hypex ncore - Page 50 - diyAudio
Go Back   Home > Forums > Commercial Sector > Vendor Forums > Vendor's Bazaar

Vendor's Bazaar Commercial Vendors large & small hawking their wares

Please consider donating to help us continue to serve you.

Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving
Reply
 
Thread Tools Search this Thread
Old 11th October 2011, 12:57 PM   #491
AP2 is offline AP2  Italy
Banned
 
Join Date: Dec 2009
Location: Italy
Hi,
Given that everyone should have the freedom to express themselves, however, the reader should distinguish the "balla". Certainly, not everyone has the experience to understand a few tricks. I agree with Bruno about the lack of documentation or new SMPS circuits to overcome the current difficulties on the web.
But this can bring out the real capabilities of a person. fill pages of theories and formulaic is simple (I did not this time). Then, the theories do not suggest the circuitry to get the result.
Regarding the sound, I spent much more time to adjust some parameters (staying in the range of measures sound good). not have sense, super excellent measure if the sound is recognized to Class D. (just only an example).
I know the real difficulties, I know every little reaction from thousands of combinations Attitude in D class. so do not believe a word of those who say (I'm referring to marketing in general). .. this amp sound good, nice sound, or those that limit the parameters (because it would be far too complex to extend them) and convince the others .. are not limited, but sounds better. or that it is useless to extend them. I think that with exactly the reality of 5 instruments playing, it is not enough even a class AB amp to 29kg. from € 20M.
Everyone grows their own backyard!

Regards
Roberto P.
  Reply With Quote
Old 11th October 2011, 01:07 PM   #492
UrSv is offline UrSv  Sweden
diyAudio Member
 
UrSv's Avatar
 
Join Date: Jan 2002
Location: Sweden
Quote:
Originally Posted by Bruno Putzeys View Post
On another note and entirely off topic. In a local Italian restaurant there's a sign saying "Le opinioni sono como le palle, ognuno ha le sue". On the internet the quote is widely attributed to Clint Eastwood, except that I can only find it in Italian...
Since I can't contribute much in the technical discussion:

Harry Callahan in The Dead Pool: "Well, opinions are like ********. Everybody has one."

Above the stars would be a word in two parts starting with the double-s ending US English version of the UK English word "bottom" followed by "holes".
__________________
UrSv
Those who say it can't be done should not stop those who are doing it.

Last edited by UrSv; 11th October 2011 at 01:09 PM.
  Reply With Quote
Old 11th October 2011, 02:10 PM   #493
diyAudio Member
 
StigErik's Avatar
 
Join Date: Feb 2008
Quote:
Originally Posted by mr_push_pull View Post
people who strongly believe that WAVs sound intrinsically (as opposed to incidentally) better than FLACs do exist. they would testify to it.
whether or not you bring arguments against the higher order distortion is of no use, because they can always resort to some other argument, no matter how scientifically incorrect or downright illogical. in their view it's still a valid argument. and when all arguments (valid or not) end there is the "i don't care how it measures, my ears know better" one. in the end there is the knowledgeable one wasting time and the dogmatic one still feeling superior.
is it only me who sees the futility?
What made me a bit grumpy was the fact that some guy said all class-D manufacturers deliberately manipulated their TDH measurements to make them look good. He claimed to have measured large amounts of 20th and 22nd order distortion products. That is not a subjective "my ears know what they hear" thing. Of course he could not provide any proof for this, and I could provide proof that is was not true.....
__________________
dipoles dipoles dipoles dipoles dipoles dipoles dipoles dipoles and dipoles
  Reply With Quote
Old 11th October 2011, 06:44 PM   #494
ds23man is offline ds23man  Netherlands
diyAudio Member
 
Join Date: Oct 2006
Quote:
Originally Posted by StigErik View Post
What made me a bit grumpy was the fact that some guy said all class-D manufacturers deliberately manipulated their TDH measurements to make them look good. He claimed to have measured large amounts of 20th and 22nd order distortion products. That is not a subjective "my ears know what they hear" thing. Of course he could not provide any proof for this, and I could provide proof that is was not true.....
20th and 22nd order distortion?? The guy who is measuring this maybe better of writing a book called "How to create a problem"

Regards Gerhard
  Reply With Quote
Old 11th October 2011, 06:49 PM   #495
diyAudio Member
 
Join Date: Apr 2004
Location: BE/NL/RW/ZA
@abraxalito & ursv: somehow I like the Italian version better

@StigErik: simply hammer the guy with his lack of evidence. It's his claim, he's got to prove it.
__________________
There's a time for everything, and this is not it.
  Reply With Quote
Old 11th October 2011, 07:25 PM   #496
diyAudio Member
 
StigErik's Avatar
 
Join Date: Feb 2008
Quote:
Originally Posted by Bruno Putzeys View Post
@StigErik: simply hammer the guy with his lack of evidence. It's his claim, he's got to prove it.
I did. He did not reply..... I won.
__________________
dipoles dipoles dipoles dipoles dipoles dipoles dipoles dipoles and dipoles
  Reply With Quote
Old 12th October 2011, 06:55 AM   #497
diyAudio Member
 
Join Date: May 2002
Location: Switzerland
Quote:
What made me a bit grumpy was the fact that some guy said all class-D manufacturers deliberately manipulated their TDH measurements to make them look good.
I guess they either don't know or they deliberatley claim that things like the AES 17 filter are there to make the measurements look nicer. They are indeed there because some analysers might have problems with the carrier residual.

Apart from that: Who would actually care about the 21st harmonic of say a 5 kHz signal. O.k. it might disturb some bats to some degree.

Regards

Charles
  Reply With Quote
Old 12th October 2011, 09:13 AM   #498
diyAudio Member
 
StigErik's Avatar
 
Join Date: Feb 2008
Ah, there are people that claim that harmonics up to 200 kHz is absolutely necessary to repropduce the overtones of musical instruments, hence the need for DXD, DSD and SACD. Some also use this as an argument to support their purchase of up-sampled 24/96 files from HDtracks.com... (which is rubbish by the way). The same people have probably never seen the frequency response of a Telefunken U-47 recording microphone.....
__________________
dipoles dipoles dipoles dipoles dipoles dipoles dipoles dipoles and dipoles
  Reply With Quote
Old 12th October 2011, 09:44 AM   #499
AP2 is offline AP2  Italy
Banned
 
Join Date: Dec 2009
Location: Italy
Hi,
I agree that 200Khz are not necessary.
But I disagree that you can limit the amplifier to 20Khz or do you think has the microphone as 22Khz bandwidth, does not contain the sounds captured information to reproduce the harmonic spectrum? musical instruments do not emit pure periodic sinusoids. especially when playing a group of musical instruments.
if you see the track, I'm sure you realize, how much work has to do the amplifier and ..loudspeaker .. very imperfect for this work.

Regards
  Reply With Quote
Old 12th October 2011, 09:47 AM   #500
diyAudio Member
 
StigErik's Avatar
 
Join Date: Feb 2008
Why the heck would I need even 20 kHz? I cant hear *anything* above 16 k anyway. Its like having a TV that can reproduce UV light....

(well, almost.... you would need to put on sun-block).
__________________
dipoles dipoles dipoles dipoles dipoles dipoles dipoles dipoles and dipoles
  Reply With Quote

Reply


Hide this!Advertise here!
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Hypex problem, who can help Hansms Class D 9 18th August 2013 07:49 AM
Hypex steveww Class D 14 18th November 2010 02:44 PM
Question for those who have tried hypex smps with hypex modules avian Class D 12 3rd March 2009 10:30 AM
Hypex UcD 180AD + signal wires, Power Supply ST, Hypex Transformer TR100A c10h12n2 Swap Meet 7 7th July 2007 04:55 PM
FS: Hypex UcD 400/180AD, hypex toroid Archmage Swap Meet 4 14th November 2006 05:23 AM


New To Site? Need Help?

All times are GMT. The time now is 02:38 PM.


vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2014 DragonByte Technologies Ltd.
Copyright 1999-2014 diyAudio

Content Relevant URLs by vBSEO 3.3.2