hypex ncore - Page 469 - 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 2nd July 2012, 07:08 AM   #4681
diyAudio Member
 
Ouroboros's Avatar
 
Join Date: Dec 2003
Location: Nottingham UK
Snickers-is said:

(Originally Posted by Julf
A ferrite on a speaker cable is a really bad idea.)

"Why do you think so?"


A COMMON-MODE ferrite on each speaker cable pair is a very good idea on class-D amps!
  Reply With Quote
Old 2nd July 2012, 09:29 AM   #4682
Julf is offline Julf  Europe
diyAudio Member
 
Join Date: Oct 2011
Location: Amsterdam, The Netherlands
@Julf, Ferrite beads on speaker lines are only a bad idea when you put one on each wire, because these things are hugely non-linear in the presence of current. If you put one on a neatly twisted pair it doesn't hurt because the audio currents in both wires cancel. [/QUOTE]

Thanks for the clarification, Bruno - I was thinking of the first case.
  Reply With Quote
Old 2nd July 2012, 10:13 AM   #4683
diyAudio Member
 
Join Date: Nov 2004
Location: Rakkestad
Send a message via MSN to Snickers-is
The antenna effect is no big problem in differential mode, especially not if the cables are twisted.
__________________
Live sounds better than HiFi.
  Reply With Quote
Old 2nd July 2012, 10:34 AM   #4684
diyAudio Member
 
Ouroboros's Avatar
 
Join Date: Dec 2003
Location: Nottingham UK
Having done a lot of radiated emissions testing from Class-D amplifiers (to EN55022), I can safely say that common-mode RF noise on the loudspeaker output lines is always an issue, and sometimes a significant problem.
  Reply With Quote
Old 2nd July 2012, 05:01 PM   #4685
diyAudio Member
 
Join Date: Aug 2007
Location: Tucson, AZ
Quote:
Originally Posted by waltzingbear View Post
Way better than the 1.4 something I bought at.
+1

Still well worth it, though. Of course,I've been considering buying more not because I need them, but to improve my overall average cost
  Reply With Quote
Old 2nd July 2012, 07:11 PM   #4686
diyAudio Member
 
Join Date: Apr 2012
What is the total cost of Ncore if ordered today...? any ideas?...i guess euro is at 1.26
  Reply With Quote
Old 2nd July 2012, 07:33 PM   #4687
jtwrace is offline jtwrace  United States
diyAudio Member
 
jtwrace's Avatar
 
Join Date: Jan 2007
Location: NC
Quote:
Originally Posted by thisisvv View Post
What is the total cost of Ncore if ordered today...? any ideas?...i guess euro is at 1.26
Currency Converter - Google Finance
__________________
"Science is not a democracy"- Earl Geddes, Ph.D.
  Reply With Quote
Old 2nd July 2012, 07:55 PM   #4688
diyAudio Member
 
Join Date: Apr 2012
Quote:
Originally Posted by jtwrace View Post
that i know..asking what is the net price in euro/$ if someone has ordered it ..shipped it and made other diy things needed to make it work..

sorry if it was a stupid questions...
  Reply With Quote
Old 2nd July 2012, 07:57 PM   #4689
jtwrace is offline jtwrace  United States
diyAudio Member
 
jtwrace's Avatar
 
Join Date: Jan 2007
Location: NC
Quote:
Originally Posted by thisisvv View Post
that i know..asking what is the net price in euro/$ if someone has ordered it ..shipped it and made other diy things needed to make it work..

sorry if it was a stupid questions...
Maybe these will help you:

Chassis & Parts Sources

Show Us Your Core-NCore!
__________________
"Science is not a democracy"- Earl Geddes, Ph.D.
  Reply With Quote
Old 3rd July 2012, 07:34 AM   #4690
diyAudio Member
 
Join Date: Apr 2004
Location: BE/NL/RW/ZA
Quote:
Originally Posted by Mintzar View Post
No. Phase is correct.
We'll try again. I just noticed you said gain is low. It sounds like only the hot input wire is connected.
Quote:
Originally Posted by Ouroboros View Post
Having done a lot of radiated emissions testing from Class-D amplifiers (to EN55022), I can safely say that common-mode RF noise on the loudspeaker output lines is always an issue, and sometimes a significant problem.
In general terms, CM on cabling is the way most emissions leave the amp. But by all means do the same measurement on the NC400, just to see where the various class D amplifiers stand relative to eachother.
__________________
There's a time for everything, and this is not it.

Last edited by Bruno Putzeys; 3rd July 2012 at 07:37 AM.
  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 06:49 AM
Hypex steveww Class D 14 18th November 2010 01:44 PM
Question for those who have tried hypex smps with hypex modules avian Class D 12 3rd March 2009 09:30 AM
Hypex UcD 180AD + signal wires, Power Supply ST, Hypex Transformer TR100A c10h12n2 Swap Meet 7 7th July 2007 03:55 PM
FS: Hypex UcD 400/180AD, hypex toroid Archmage Swap Meet 4 14th November 2006 04:23 AM


New To Site? Need Help?

All times are GMT. The time now is 05:21 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