Demagnetising Tool/Tool Demagnetiser - Page 3 - diyAudio
Go Back   Home > Forums > General Interest > Everything Else

Everything Else Anything related to audio / video / electronics etc) BUT remember- we have many new forums where your thread may now fit! .... Parts, Equipment & Tools, Construction Tips, Software Tools......

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 4th October 2002, 09:12 PM   #21
jcarr is offline jcarr  United States
diyAudio Member
 
Join Date: Jul 2002
Location: Tokyo, Japan
Liddell:

>The mechanism used to focus the laser assembly is electro-magnetic.<

More specifically, it is usually very similar to the voice-coil of a loudspeaker driver.

Many disc clamping mechanisms also utilize magnetic operation.

regards, jonathan carr
__________________
http://www.lyraconnoisseur.com/, http://www.lyraaudio.com
  Reply With Quote
Old 4th October 2002, 09:41 PM   #22
diyAudio Member
 
Steve Eddy's Avatar
 
Join Date: Sep 2002
Location: Sacramento, CA
Default Re: Demagnatizing CDs?

Quote:
Originally posted by Alice Liddell
2. The label ink or paint on a CD can contain iron oxide pigments or other magnetic materials.
But the question is, how does that material come to be magnetized to begin with that it would subsequently need to be demagnetized?

se
  Reply With Quote
Old 4th October 2002, 09:53 PM   #23
Banned
 
Join Date: Oct 2002
Location: Looking Glass, TX
Default it would subsequently need to be demagnetized?

">The mechanism used to focus the laser assembly is electro-magnetic.<

More specifically, it is usually very similar to the voice-coil of a loudspeaker driver.

Many disc clamping mechanisms also utilize magnetic operation.

regards, jonathan carr"


The soldiers were silent, and looked at Alice, as the question was evidently meant for her.

`Yes!' shouted Alice.

Alice
  Reply With Quote
Old 4th October 2002, 10:11 PM   #24
diyAudio Member
 
MRehorst's Avatar
 
Join Date: May 2002
There are probably trace amounts of ferric materials in the dust on the disc as well as the stuff in the disc label (on MY discs, not your's- I know you keep YOUR discs cleaner than I keep mine). I suppose from a philosophical point of view, as long as one magnetic molecule remains on the disc, it COULD have some effect on the sound. And by that logic, a disc demagnetizer COULD have some effect on the sound as well.

There, you've beaten me into submission - I've admitted that a disk demagnetizer could have some effect. Now I think I'll go try out the rumor I've heard about self-trepanation improving the sound of my system. Anyone care to join me?

MR
  Reply With Quote
Old 4th October 2002, 10:25 PM   #25
Banned
 
Join Date: Oct 2002
Location: Looking Glass, TX
Default as well as the stuff in the disc label

Don't any of your CDs have printing on them? Pictures, name of the CD, band, ect. I have some opjective measurtment experiments in mind for the objectivist.


"I've heard about self-trepanation improving the sound of my system." You need not poke a hole in your head to be open minded you know.

http://www.smith.edu/hsc/museum/anci...ons/hsc06b.htm

http://www.ee0r.com/trepan.html

Alice
  Reply With Quote
Old 4th October 2002, 11:04 PM   #26
UrSv is offline UrSv  Sweden
diyAudio Member
 
UrSv's Avatar
 
Join Date: Jan 2002
Location: Sweden
It is sometimes hard to keep an open mind...

/UrSv

A boat, beneath a sunny sky,
Lingering onward dreamily
In an evening of July -
Children three that nestle near,
Eager eye and willing ear,
Pleased a simple tale to hear -

Long has paled that sunny sky:
Echoes fade and memories die:
Autumn frosts have slain July.

She still haunts me, phantomwise,
Alice moving under skies
Never seen by waking eyes.

Children yet, the tale to hear,
Eager eye and willing ear,
Lovingly shall nestle near.

In Wonderland they lie,
Dreaming as the days go by,
Dreaming as the summers die:

Ever drifting down the stream -
Lingering in the golden gleam -
Life, what is it but a dream?
  Reply With Quote
Old 4th October 2002, 11:31 PM   #27
diyAudio Member
 
Join Date: Sep 2002
Location: Sweden
Come to think of it, I did an experiment some time ago, painting
a CDR black on the top side and outer rim using black acrylic
paint. It didn't work. The CD player refused to play beyond
some 40 seconds. I never investigated the matter, but now it
is suddenly all clear to me. I used Mars black, which is an iron
oxide pigment. Guess I have to demagnetize it.
  Reply With Quote
Old 4th October 2002, 11:45 PM   #28
diyAudio Member
 
mrfeedback's Avatar
 
Join Date: Feb 2002
Location: Perth, Australia.
Default Floppy Sonics

There was a suggestion a while back about cracking open a 3.5" floppy and placing the floppy disc ontop the cd disc before loading into the player.
I tried this with a 5 1/4" floppy (I trimmed 10 mm from the diameter) and it did change the sound subtley.
First impressions were that I did not particularly like the change and I have not got back to trying it again.

Eric.
  Reply With Quote
Old 4th October 2002, 11:47 PM   #29
diyAudio Member
 
Peter Daniel's Avatar
 
Join Date: Jul 2002
Location: Toronto, Canada
Send a message via AIM to Peter Daniel
What about freezing disks? I never tried it but people report good results. Might try it today. Why not?
__________________
www.audiosector.com
“Do something really well. See how much time it takes. It might be a product, a work of art, who knows? Then give it away cheaply, just because you feel that it should not cost so much, even if it took a lot of time and expensive materials to make it.” - JC
  Reply With Quote
Old 4th October 2002, 11:50 PM   #30
diyAudio Member
 
mrfeedback's Avatar
 
Join Date: Feb 2002
Location: Perth, Australia.
When I demagnetize my tools they become "unmagnetic" (for my needs) but maybe this isn't enough for your friend?
Yes the watchmakers screwdriver needs to be totally non-magnetised, or else it can grab and damage tiny hair springs in the watch mechanism.

I posted this info so that members here may try demagnetising components - Bernard ?.

Eric.
  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
Need a tool! Tenson Multi-Way 12 19th March 2007 08:36 PM
New Tool album CBS240 Music 8 11th March 2007 03:30 AM
tool wearout traw Parts 2 18th September 2006 04:08 PM
Eagle Tool Ipanema Everything Else 3 6th June 2006 07:25 AM
TL design tool? mazeroth Multi-Way 3 22nd May 2006 08:03 AM


New To Site? Need Help?

All times are GMT. The time now is 08:14 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