Coral Flat 6 - magnet/frame seal problem. - diyAudio
Go Back   Home > Forums > Loudspeakers > Full Range

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 February 2007, 03:56 PM   #1
nodiak is offline nodiak  United States
diyAudio Member
 
Join Date: Nov 2004
Location: really northern cal. coast
Default Coral Flat 6 - magnet/frame seal problem.

The drivers give off a "clang" when bumped, or even when setting down on a table magnet first. With a light effort the frame to magnet joint can be seperated, a hairline crack shows.
What's a good way to reseal the joint?
And is the clang inherent and just needs frame damping?
Don
  Reply With Quote
Old 11th February 2007, 09:43 PM   #2
Geoff H is offline Geoff H  Australia
diyAudio Member
 
Join Date: Oct 2006
Hi Don. I have a Pioneer driver here that's done the same thing. (I tossed out it's mate when I moved)

Seems the glue just gives up. The next knock moves the pole piece to one side jamming the VC.

If your drivers are what I think they are, you can't remove the dust cap to facilitate alignment. You need to remove the magnet and pole piece, remove all traces of adhesive. Then reassemble the unit. If you have a dial indicator, it may be possible to align the centre pole before the adhesive goes off. I'm not sure what adhesive to use, yet.

Post a pic of the front and the damage.

Regards,

Geoff
  Reply With Quote
Old 11th February 2007, 11:56 PM   #3
nodiak is offline nodiak  United States
diyAudio Member
 
Join Date: Nov 2004
Location: really northern cal. coast
Thanks for the reply Geoff. I'm not sure if my post came off right. I didn't bump it and cause any damage. I recently received these and noticed the light clang sound when setting them down. Some investigation turned up the adhesive had dried up, etc. Just explaining because I don't have a camera, and there's no frame damage.
These are some of the ones from diyparadise and have never been played. I got 4 from someone who bought several. Asked him to check his for this problem, but haven't heard back on that. Maybe others are having this problem?
There doesn't seem to be an alignment problem. I was hoping to remove the old adhesive and apply new. What's a good adhesive for this?
I'm hoping they don't need to taken apart and reassemble. I don't think I'd get into that.
Don
  Reply With Quote
Old 12th February 2007, 01:58 AM   #4
Geoff H is offline Geoff H  Australia
diyAudio Member
 
Join Date: Oct 2006
You're welcome Don.
If the magnet had dislodged completely, I'd remove all traces of adhesive, and use 3 or 4 drops of one of the cyanoacrylates (super glue). The magnet will provide most of the force, just need to locate it.

In your case, you could try Araldite. Close the joint with a vice or other clamp and build up a fillet over the crack, then the complete circle if successful. I don't know how well the Araldite will bond to the ceramic.

Good luck with it,
Geoff.
  Reply With Quote
Old 12th February 2007, 01:58 AM   #5
diyAudio Member
 
tomtt's Avatar
 
Join Date: Aug 2002
Location: kansas city mo, and on occasion, around the world ...
Blog Entries: 15
might work


http://jbweld.net/index.php
  Reply With Quote
Old 12th February 2007, 02:11 AM   #6
Geoff H is offline Geoff H  Australia
diyAudio Member
 
Join Date: Oct 2006
Good point Tom. Says it will work on ceramic tiles. If it does, you'll never get it apart.

Geoff
  Reply With Quote
Old 12th February 2007, 02:12 AM   #7
nodiak is offline nodiak  United States
diyAudio Member
 
Join Date: Nov 2004
Location: really northern cal. coast
It's lucky there's no big seperation, just a hairline crack that shows when I give a light pull. I'll keep in mind the vc alignment issue after I've removed adhesive. tomtt, good old jb weld may be a good idea.
Thanks guys, Don
  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
Coral Flat 5 t/s ballsingtripp Full Range 17 15th November 2009 08:46 AM
Basket, magnet & frame damping: How to? gnugear Full Range 24 26th March 2008 10:05 AM
FR125s frame/magnet damping Foxx510 Full Range 3 6th August 2007 02:02 AM
Coral Flat 10 albertli Full Range 16 3rd August 2006 03:07 PM


New To Site? Need Help?

All times are GMT. The time now is 06:33 AM.


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