Where to find magnets???For Diy Planar - diyAudio
Go Back   Home > Forums > Loudspeakers > Planars & Exotics

Planars & Exotics ESL's, planars, and alternative technologies

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 7th March 2006, 08:25 AM   #1
diyAudio Member
 
Join Date: Dec 2004
Location: wisconsin
Default Where to find magnets???For Diy Planar

Does anybody know of a supplier for the exact kind of magnets used in magnepan speakers??? I have looked all over and have found suppliers for other kinds of magnets, but not the exact same kind that are used in the magnepans.. Any help??? So far I have posted this message in other forums and no one seems to know where to get these and just give me a link to a "generic" magnet supplier So any help in finding a supplier (besides magnepan) for the exact magnets magnepan uses would be appreciated
  Reply With Quote
Old 8th March 2006, 07:30 PM   #2
diyAudio Member
 
Join Date: Aug 2003
Location: Calgary on the Bow
Default Scrap yard or refigeration supply

You can sort through a metal scrap yard and pull off all the plastiform magnets off of fridge and freezer doors. You will find though that most of these flat plastiform magnets are multi pole types (side by side poles of n/s/n/s etc.) and you want single one pole per surface types. They are out there and you can find them. You could save the troouble at more expense and look at the refrigeration supply /repair shops and purchase the magnet that you need. Magnet supply shops can also help but will probably be more expensive than the refrigeration supply shops. good luck and have fun. Remember that Google is your friend. Regards Moray James.
__________________
moray james
  Reply With Quote
Old 8th March 2006, 08:47 PM   #3
diyAudio Member
 
Join Date: Nov 2003
Location: Tempe, AZ
I haven't looked closely at Magnapans since the early '70s, so I don't know what they are using nowadays, but the first item that showed up on a Google search was

http://www.custom-magnets.com/Adhesi...tic_Strips.htm

which should prove woorth investigating.

I seem to remember some tie between early Magnapan products and a 3M product, but those brain cells have long since faded into oblivion.
  Reply With Quote
Old 8th March 2006, 11:46 PM   #4
gl is offline gl  United States
diyAudio Member
 
Join Date: Dec 2003
Location: Sierra Foothills - California
I googled for "ceramic magnets" and the first item up was www.magnetsource.com. The ceramic magnet "block" page lists a magnet that is .25" x .25" x 3" that looks very similar to the magnets on the ribbon tweeter of my Maggies.

Graeme
  Reply With Quote
Old 9th March 2006, 11:05 PM   #5
diyAudio Member
 
Join Date: Dec 2004
Location: wisconsin
the magnets on my mgI look to be one piece 1/8 x 1/8x 48" unless they are several pieces that appear as one
  Reply With Quote
Old 10th March 2006, 03:31 AM   #6
Marik is offline Marik  United States
diyAudio Member
 
Join Date: Sep 2005
Location: SLC, UT
Sorry, it might belong to a market place, but I have two boxes of IIRC, 3"x1"x1" ceramic magnets. I don't think I will find use for them soon, so if you are interested let me know and I will check exact size.
  Reply With Quote
Old 11th March 2006, 10:13 AM   #7
el`Ol is offline el`Ol  Germany
diyAudio Member
 
Join Date: May 2005
Location: Bavarian Forest
I once considered to build a planar with air filter paper and with neodymium platelets available at Ebay. But I don`t know whether it works.
Attached Images
File Type: jpg maggie.jpg (12.4 KB, 380 views)
  Reply With Quote
Old 21st March 2006, 01:03 PM   #8
Samppo is offline Samppo  Finland
diyAudio Member
 
Join Date: Nov 2002
Location: Finland
From my experience I would suggest to stay away from fridge magnets or plastic magnets. They are usually quite weak and will probably give a poor result.

What type of magnets Maggies use I can't tell for sure..it's a while since I last owned a pair, but i do remember that the MG 0.6/1.5 had very slim ones. Not that wide or deep. I don't know what kind of design you'll be using them for, but a completely different magnet might work better in your case.

In most Apogees they used much bigger magnets that were roughly 10mm thick and 20mm wide with lengths of 40-70mm, judging from pictures. This for bass. For the tweeter section a bit thicker ones or then thinner ones stacked.

The magnets you could look for should probably be magnetized through one "side" to get a stronger magnetic field. Ferrite or Neodymium. Neodym magnets are much smaller and stronger, but also more expensive.
  Reply With Quote
Old 27th July 2010, 11:28 PM   #9
diyAudio Member
 
Join Date: Jan 2007
Location: wigston leics england
best place and cheapest is china even after you pay the postage they are still cheaper than anywhere else. The company in question is:-
NINGBO TONGCHUANG STRONGMAGNETS MATERIALS CO. LTD, NINGBO ,CHINA.
THE PERSON TO GET IN TOUCH WITH YOUR SIZES ETC. IS helen@ndmagnets.com
__________________
HENRY
  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
Full range planar speaker using neo magnets JAMESBOS Planars & Exotics 335 5th April 2014 02:28 PM
Magnets, Magnets,Magnets! skooter Car Audio 10 25th September 2008 09:30 PM
Where to buy magnets Tenson Multi-Way 1 16th May 2007 01:47 AM
Tannoy magnets AndrewT Multi-Way 1 13th December 2004 02:02 PM


New To Site? Need Help?

All times are GMT. The time now is 12:24 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