Cap types and sound quality - diyAudio
Go Back   Home > Forums > Design & Build > Parts

Parts Where to get, and how to make the best bits. PCB's, caps, transformers, etc.

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 20th April 2007, 01:13 AM   #1
diyAudio Member
 
Circlotron's Avatar
 
Join Date: Jun 2002
Location: Melbourne, Australia
Default Cap types and sound quality

Article based on engineering facts.
Link
__________________
Best-ever T/S parameter spreadsheet.
http://www.diyaudio.com/forums/multi...tml#post353269
  Reply With Quote
Old 20th April 2007, 01:42 AM   #2
jcx is offline jcx  United States
diyAudio Member
 
Join Date: Feb 2003
Location: ..
-with a premise of only considering crap to begin with

no one interested in quality would consider "class 2" ceramic in a audio signal path

even mylar would be superior and avaliable in 1210 pkg at the tested 1 uF, 16 V value

likely even al electro of 10uF value would be superior in similar case size
  Reply With Quote
Old 20th April 2007, 07:32 AM   #3
Nordic is offline Nordic  South Africa
diyAudio Member
 
Nordic's Avatar
 
Join Date: Sep 2005
The article was good I think.

It clearly relates to PC sound hardware, states the obvious footprint problem, and serves as a guide to manufacturers as to which of the components available in that size would produce the lowest THD etc...

I.e. not which cap is the best, but which carateristics would make one cheap (mass production utilisation) capacitor a better choice than the next with the goal being Vista Certification.

Quote:
When considering capacitors for the audio-signal path, select capacitors with X7R dielectrics for better THD performance. Although X5R dielectrics outperform Y5V dielectrics, X7R dielectrics offer the best—that is, lowest—THD among Class 2 dielectrics.

The space, height, and cost restrictions typically associated with portable consumer electronics force the use of passive components with small footprints, low profiles, and low cost. When you use them for audio-signal coupling, some small-footprint, low-profile, low-cost passive components can limit low-frequency THD performance in audio circuits. However, doing so compromises audio sound quality and jeopardizes Vista compliance. Despite their slight footprint and price premium, large-footprint ceramic capacitors with high voltage ratings and X7R dielectrics are the best choice for all passive components in the signal path for a Vista-compliant audio design.
  Reply With Quote
Old 20th April 2007, 08:58 AM   #4
AndrewT is offline AndrewT  Scotland
diyAudio Member
 
Join Date: Jul 2004
Location: Scottish Borders
Hi,
this doc starts with the premiss that only HiK ceranic will fit the footprint left available on the pcb.

Seems she is recommending the best of a bad lot.

I note that the spec she is trying to meet limits frequency response (and distortion measurement targets) to -3db at 20Hz and there are some other specs that cut off at 100Hz.

What happened to the CD bass rolloff of -3db at 4Hz?
Is the DVD bass response even lower down at about 1Hz or 2Hz.

Looks like microsoft and maxim are aiming pretty low with their premium audio systems.
__________________
regards Andrew T.
  Reply With Quote
Old 20th April 2007, 09:50 AM   #5
diyAudio Member
 
jacco vermeulen's Avatar
 
Join Date: Oct 2004
Location: At the sea front, Rotterdam or Curaçao
Send a message via Yahoo to jacco vermeulen
diyA DIY PC sound card anyone ?
__________________
The buck stops Here
  Reply With Quote
Old 20th April 2007, 02:23 PM   #6
Nordic is offline Nordic  South Africa
diyAudio Member
 
Nordic's Avatar
 
Join Date: Sep 2005
Click the image to open in full size.

Most diy PC sound cards sem to be offboard, so free from the restrictions...portable media is another matter...
  Reply With Quote
Old 20th April 2007, 04:01 PM   #7
Tweeker is offline Tweeker  United States
diyAudio Member
 
Join Date: Dec 2004
Location: Cincinnati, Ohio
The Vista compliance shackles take up a whole lot of the board space.
__________________
Be sure your foil hat has a good low impedance ground.
  Reply With Quote
Old 22nd April 2007, 01:53 AM   #8
diyAudio Member
 
Circlotron's Avatar
 
Join Date: Jun 2002
Location: Melbourne, Australia
My interest in the article was not regarding ultimate fidelity, but that it sets out good reasons why not all capacitors sound the same.
__________________
Best-ever T/S parameter spreadsheet.
http://www.diyaudio.com/forums/multi...tml#post353269
  Reply With Quote
Old 22nd April 2007, 05:28 AM   #9
diyAudio Member
 
jacco vermeulen's Avatar
 
Join Date: Oct 2004
Location: At the sea front, Rotterdam or Curaçao
Send a message via Yahoo to jacco vermeulen
Vista ? Eeeeeeeeeeeeeeeek

http://www.boreme.com/boreme/funny-2...he-book-p1.php
__________________
The buck stops Here
  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
Quality Control differences = variations in sound quality? KT Class D 3 4th June 2014 12:02 AM
Best possible sound quality from +12 ATX PSU Arnop Chip Amps 3 6th April 2009 11:40 AM
Better Sound Quality LqDFx Car Audio 14 16th June 2006 04:49 PM
Orange drop types/sound lndm Parts 3 20th March 2006 03:46 AM
TAD sound quality Kal Multi-Way 12 6th April 2004 06:16 PM


New To Site? Need Help?

All times are GMT. The time now is 12:49 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