Voice Coil Wire Soldering - diyAudio
Go Back   Home > Forums > Loudspeakers > Multi-Way

Multi-Way Conventional loudspeakers with crossovers

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 10th January 2007, 03:14 PM   #1
Plundering the Planet From the Comfort of Home
diyAudio Member
 
DreadPirate's Avatar
 
Join Date: Jan 2006
Location: Northern Virginia, USA
Default Voice Coil Wire Soldering

I opened up a failed tweeter and found that the voice coil wire had broken between the terminal and the coil, probably from fatigue, as I do not drive my speakers. This wire is ridiculously fragile, I broke the other side just by looking at it. Now the question is can this wire be re-joined? I do have an ok soldering station, the weller digital, is soldering worth trying and if so, what is the procedure and materials needed, tips? Thanks.
  Reply With Quote
Old 10th January 2007, 03:23 PM   #2
infinia is offline infinia  United States
diyAudio Member
 
infinia's Avatar
 
Join Date: May 2005
Location: Californication
Hi
..., a couple of images would help.
__________________
like four million tons of hydrogen exploding on the sun
like the whisper of the termites building castles in the dust
  Reply With Quote
Old 17th January 2007, 06:43 PM   #3
Plundering the Planet From the Comfort of Home
diyAudio Member
 
DreadPirate's Avatar
 
Join Date: Jan 2006
Location: Northern Virginia, USA
The images are coming, by the way, been a bit busy.
  Reply With Quote
Old 17th January 2007, 07:03 PM   #4
diyAudio Member
 
jneutron's Avatar
 
Join Date: Jan 2004
Location: away
Welcome to the party pal..

I've repaired quite a few.

Failure modes:

1. Overdissipation...nothing to do, unless you have some small wire to replace the coil. It's fun to do if you have a microscope and some good high temp epoxy, but after doing it, don't recommend it.

2. Squashed wires: I repaired about a (seems like) thousand T-3500's (or T-350, I'm not sure which number the tweeter was). When the manu put them together, the cardboard insulating piece really squashed the daylights out of the wire from the terminal to the voice coil. I used a single strand of wire pulled from a zip cord or something like it to do the repair..back then, I could see the wire..

3. Ultrasonic fatigue: When ya clip the amp, the tweet gets some hf energy, and most tweets don't support the vc wire within the entire gap, so where it's in the field but loose, it can resonate, fatigue, then fail. If you have a microscope, you may see the rough texture on the wire really close to the break.

If the wire is copper, it can certainly be repaired. I had a pair of Guass Cetec tweeters, major ones, that had aluminum edgewound wire...that I was unable to repair..

Cheers, John
  Reply With Quote
Old 17th January 2007, 07:08 PM   #5
AVWERK is offline AVWERK  United States
diyAudio Member
 
Join Date: Jan 2004
Location: So Calif.
Funny you mention this as I just did a peerless 2" dome last month (old Vandersteen 2A)

On mine, the termination at the corner (going away from the dome) broke. I had to peel about 1/4" off the dome to make enough room to resolder.

The coil wire is extremely fragile and what makes it hard to solder is the coating has to be scraped off.

Get yourself some reading glasses, about 250 power with alot of light and the smallest solder dia. with the lowest temp that will do the job.

If your successful, you must coat the area you soldered with some flexible glue (I used Spray 90- contact cement used with Formica counter tops) while using a small brush to coat this over.

Ive never done a tweeter and this might not work considering the smaller size and change in inductance but what the heck...

Regards
David
  Reply With Quote
Old 29th January 2007, 10:28 AM   #6
Plundering the Planet From the Comfort of Home
diyAudio Member
 
DreadPirate's Avatar
 
Join Date: Jan 2006
Location: Northern Virginia, USA
Here are some photos of the broken wire. The wire is coated. What I was planning on doing at this point is using some solder braid to solder each end of the wire onto, then securing with epoxy or hot melt. How does one get the varnish off the wire? This wire is extremely delicate. It's a $15 tweeter by the way, nothing lost if it doesn't work out.
Attached Images
File Type: jpg tweetercloseup.jpg (88.9 KB, 188 views)
  Reply With Quote
Old 29th January 2007, 10:33 AM   #7
Did it Himself
diyAudio Member
 
richie00boy's Avatar
 
Join Date: Nov 2003
Location: Gloucestershire, England, UK
Try carefully scraping the coating off the wire with a very sharp blade craft knife/scalpel.
__________________
www.readresearch.co.uk my website for UK diy audio people - designs, PCBs, kits and more.
  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
voice coil wire slidding off former? audiobahnkid592 Car Audio 6 6th January 2009 01:47 PM
2167F Maggie Voice coil repair copper wire rsuski Planars & Exotics 0 11th February 2008 08:16 AM
Single Voice Coil Vs Double Voice Coil Subwoofer Workhorse Car Audio 6 12th April 2007 06:36 AM
Voice coil wound with steel wire. Circlotron Multi-Way 6 20th February 2003 07:18 PM
Aluminum vs. copper voice coil wire? capslock Multi-Way 7 28th October 2002 03:46 AM


New To Site? Need Help?

All times are GMT. The time now is 09:35 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