Notices
928 Forum 1978-1995
Sponsored by:
Sponsored by: 928 Specialists

Refoam tweeters

Thread Tools
 
Search this Thread
 
Old 05-27-2010, 03:43 AM
  #1  
Paul Bakker
Instructor
Thread Starter
 
Paul Bakker's Avatar
 
Join Date: Feb 2010
Location: Nearby Amsterdam (The Netherlands)
Posts: 185
Likes: 0
Received 0 Likes on 0 Posts
Default Refoam tweeters

Hi.
I know there were many topics about speaker replacement but still I'm not sure about one thing... Today I'm gonna remove the rear woofer speakers from my '90 S4 to do a refoam.
My mid and high range are OK (I think) but the woofers sound terrible.

Is there a need to refoam the tweeters also or do tweeters never need a refoam because they don't "move" as much as woofers ?

Thanks, Paul
Old 05-27-2010, 07:12 AM
  #2  
Paul Bakker
Instructor
Thread Starter
 
Paul Bakker's Avatar
 
Join Date: Feb 2010
Location: Nearby Amsterdam (The Netherlands)
Posts: 185
Likes: 0
Received 0 Likes on 0 Posts
Default Progress update

I removed both woofers without any problems.
Each is connected through 2 connectors. 1 out of 4 is so far tucked away behind the board I think my next project is to remove this board partially to get to the connector in order to reconnect the woofer when I'm done.

I noticed the foam after 20 years of (heavy ?) duty was very fragile. The one woofer who worked "well" disintegrated when I touched the foam with very light pressure!

Also I found the glue on the speaker itself very tough to remove. I used a paint remover heater (not sure how you call it, a strong hairdryer ?) to warm it up and found it easyer to remove. Also tried some sticker remover to finish it up but I wouldn't suggest others to do that. Just use a small knive to scrape all glue off the speaker.

I found a company here in Holland who sells almost every size of rings so I mailed them the data and hope they respond soon with the correct rings to order.

Price indication: $ 3,- each !

Keep you informed.
Attached Images  
Old 05-27-2010, 07:37 AM
  #3  
danglerb
Nordschleife Master
 
danglerb's Avatar
 
Join Date: Oct 2006
Location: Orange, Cal
Posts: 8,575
Received 3 Likes on 3 Posts
Default

Foam rots over time, but tweeters use a different type of edge material and should be fine.
Old 05-27-2010, 10:11 AM
  #4  
steaditim
Rennlist Member
 
steaditim's Avatar
 
Join Date: Oct 2003
Location: toronto
Posts: 230
Likes: 0
Received 0 Likes on 0 Posts
Default

I just did this.

I re-foamed the mids and woofers, but the tweeters are made with cloth and do not rot as quickly.

Like Danglerb said, your tweeters are likely fine

Tim
Old 05-27-2010, 10:43 AM
  #5  
SQLGuy
Three Wheelin'
 
SQLGuy's Avatar
 
Join Date: Mar 2010
Location: Colorado Springs, CO USA
Posts: 1,307
Likes: 0
Received 3 Likes on 3 Posts
Default

I believe the tweeters have a polycarbonate-based dome, which should include the curl at the edge. In any case, I've never seen true tweeters that used a foam surround nor a surround replacement kit for tweeters. In general, if anything is available to repair a tweeter, it's the "butterfly", which is the whole voice coil and diaphragm in one assembly.
Old 05-29-2010, 03:12 AM
  #6  
JohnBlackWatson
4th Gear
 
JohnBlackWatson's Avatar
 
Join Date: Jan 2010
Posts: 4
Likes: 0
Received 0 Likes on 0 Posts
Default

>>Each is connected through 2 connectors. 1 out of 4 is so far tucked away behind the board I think my next project is to remove this board partially to get to the connector in order to reconnect the woofer when I'm done<<

Hi, I did the same job about six weeks ago and had the problem with one of the four connectors being hidden - what I found was that the pressure on the connector from the trim panel was greater than the pressure needed to re-connect the plug.

It was a bit tricky to re-connect but with a bit of perseverance it should not be necessary to take the trim panel out.

To me it made no sense why the 'hidden' connector didn't just have an extra 10cm of cable...
Old 05-29-2010, 03:35 AM
  #7  
Paul Bakker
Instructor
Thread Starter
 
Paul Bakker's Avatar
 
Join Date: Feb 2010
Location: Nearby Amsterdam (The Netherlands)
Posts: 185
Likes: 0
Received 0 Likes on 0 Posts
Default

Originally Posted by JohnBlackWatson
>>Each is connected through 2 connectors. 1 out of 4 is so far tucked away behind the board I think my next project is to remove this board partially to get to the connector in order to reconnect the woofer when I'm done<<

Hi, I did the same job about six weeks ago and had the problem with one of the four connectors being hidden - what I found was that the pressure on the connector from the trim panel was greater than the pressure needed to re-connect the plug.

It was a bit tricky to re-connect but with a bit of perseverance it should not be necessary to take the trim panel out.

To me it made no sense why the 'hidden' connector didn't just have an extra 10cm of cable...
Hi.
I removed the nearby mid speaker to find out the connector was right behind it.
So I don't have to remove the panel. Foam rings come today by mail so my project can continue!

Thanks, Paul



Quick Reply: Refoam tweeters



All times are GMT -3. The time now is 07:05 AM.