Results 1 to 6 of 6

Thread: New Dust Cap for D130F Woofer

  1. #1
    Junior Member fecooper's Avatar
    Join Date
    Apr 2009
    Location
    Florence, Alabama
    Posts
    9

    New Dust Cap for D130F Woofer

    I removed my 40 year old D130F woofer from my cabinet and found that my aluminum dust cap is quite crinkled and I think it may be what's causing some upper mid-frequency harshness I've been hearing. Other than the dented and crinkled dust cap, the speaker is in great condition. Does it make sense to take the speaker to a service center and just have the dust cap replaced or should I go ahead and get the speaker completely re-coned?

    Attached Images Attached Images  

  2. #2
    Senior Member Loren42's Avatar
    Join Date
    Mar 2009
    Location
    Space Coast, Florida
    Posts
    238
    Just replace the dust cap if everything else is fine.

    I forget the exact procedure, but you just need some glue remover (acetone?) to get the old one off and then glue on a new one.

    Use a piece of masking tape (the blue painter's tape works good) to act as a handle by attaching just a small edge of the tape to the center of the dome. Do this gently.

    Put a small bead of glue around the old ring where the cap was and then lower the dome into place.

    There is probably something on this site to help you do it.

  3. #3
    Senior Member BMWCCA's Avatar
    Join Date
    Feb 2006
    Location
    Virginia
    Posts
    7,035
    Quote Originally Posted by Loren42 View Post
    I forget the exact procedure, but you just need some glue remover (acetone?) to get the old one off and then glue on a new one.
    I don't know since I've never done one, but I believe I read that the aluminum dome on the extended-range JBLs like the D130, D120, and their F-series counterparts actually had a mechanical connection to the VC/motor in some way. I'm sure there are many here who can tell you for sure (Harvey being one!) but I wouldn't take any drastic steps until you find out for sure.


    Apologies if I'm wrong, but better safe than sorry. My D130s are all as old as I am but their parts are in much better shape!

    Edit: In fact the literature on the D130 here speaks about an aluminum "diaphragm" permanently attached to the aluminum voice coil tube.
    ". . . as you have no doubt noticed, no one told the 4345 that it can't work correctly so it does anyway."—Greg Timbers

  4. #4
    Senior Member
    Join Date
    Apr 2003
    Location
    Ct.
    Posts
    298
    It just says it's permanently attached to the voice coil tube...like every other center cap..you'd have a heck of a time centering the voice coil in the gap if you couldn't put shims in it, let alone see it...
    Getting the old dome off isn't for a first timer. You have to X-acto it out, using very careful pressure so as not to distort the coil, and, keep a piece of sticky tape under where the knife goes through so you don't drop cutting fragments into the gap. If you get through that succesfully, you want the new one to fit snugly and evenly where the old one was, and run glue in AFTER the dome is in place.
    Patience and care are key here.....

  5. #5
    Senior Member spkrman57's Avatar
    Join Date
    Feb 2005
    Location
    Columbus, Ohio
    Posts
    1,982

    Non-magnetic tools are best for this job!

    Quote Originally Posted by Tim Rinkerman View Post

    Getting the old dome off isn't for a first timer. You have to X-acto it out, using very careful pressure so as not to distort the coil, and, keep a piece of sticky tape under where the knife goes through so you don't drop cutting fragments into the gap.
    The magnetic field will draw magnetic tools into the gap with great force if you get close enough!!!

    Regards, Ron
    JBL Pro for home use!

  6. #6
    Junior Member fecooper's Avatar
    Join Date
    Apr 2009
    Location
    Florence, Alabama
    Posts
    9

    D130F Woofer Dust Cap

    You all have convinced me to pay someone else to do it. The folks at Speakerex in Tampa Florida have quoted me a very reasonable price - less than $20 per speaker to replace dust cap. When I visit my mother-in-law in Florida, this will be a nice side trip. Thanks for the help.

Thread Information

Users Browsing this Thread

There are currently 1 users browsing this thread. (0 members and 1 guests)

Similar Threads

  1. Dust Cap in or Out?
    By mbd7 in forum Lansing Product Technical Help
    Replies: 15
    Last Post: 08-01-2019, 04:07 AM
  2. E-120 Dust cap replacement
    By Clifton Hanger in forum Lansing Product Technical Help
    Replies: 7
    Last Post: 08-27-2008, 07:46 AM
  3. 125A Woofer Dust Cap?
    By TGBTG7701 in forum Lansing Product General Information
    Replies: 2
    Last Post: 09-23-2007, 03:36 PM
  4. Broken dust cap on 416 woofer (Model 19)
    By CauYem in forum Lansing Product Technical Help
    Replies: 1
    Last Post: 07-30-2007, 11:36 AM
  5. LE25 dust cap dent removal solution!
    By thoots in forum Lansing Product Technical Help
    Replies: 13
    Last Post: 04-13-2005, 04:36 PM

Tags for this Thread

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •