+ Reply to Thread
Results 1 to 9 of 9

Thread: replacement foam surrounds for JBL 128H (L150a)

  1. #1
    Junior Member
    Join Date
    Apr 2012
    Location
    77001
    Posts
    3

    replacement foam surrounds for JBL 128H (L150a)

    Hello:

    I just received the replacement surrounds for
    a re-foaming project (my 1st) on my vintage JBL L150a speakers
    ( driver : 128H, 9-3/8", white-cone : )

    I am concerned about the fit of the SimplySpeakers.com item FSK-12A.
    see : http://www.simplyspeakers.com/jbl-sp...t-fsk-12a.html

    Can someone with speaker re-foaming experience advise me whether
    the new surround foam should fit LOOSELY or TIGHTLY around the speaker-cone.
    ( i.e. the fit between the surround-roll I.D. and cone-O.D. )

    Thanks
    OldTechy.

  2. #2
    Senior Member
    Join Date
    Feb 2007
    Location
    Christchurch, NZ
    Posts
    1,392
    Hi,
    I have not used that particular kit on the 128 but the ones I have used, the roll should pretty much start at the edge of the cone. It should be a perfect fit.

    Allan.

  3. #3
    Administrator Robh3606's Avatar
    Join Date
    Apr 2003
    Location
    Destiny
    Posts
    7,511
    There are 2 cone sizes for the 12"s. If you ordered from Rick he would ask you to measure the cone so he sent you the right kit. They should basically just drop in with the roll starting at the edge of the cone. If you have to stretch them to get them to fit that's not good. Just dry fit it and take a picture and post it for us. We will get you through it.



    Rob
    "I could be arguing in my spare time"

  4. #4
    Senior Member BMWCCA's Avatar
    Join Date
    Feb 2006
    Location
    Virginia
    Posts
    5,521
    Quote Originally Posted by OldTechy View Post
    SimplySpeakers

    'Nuff said.

    Rick Cobb <rcobb@tampabay.rr.com> and you're done.
    ". . . as you have no doubt noticed, no one told the 4345 that it can't work correctly so it does anyway."—Greg Timbers

  5. #5
    Junior Member
    Join Date
    Apr 2012
    Location
    77001
    Posts
    3
    Quote Originally Posted by BMWCCA View Post
    'Nuff said.

    Rick Cobb <rcobb@tampabay.rr.com> and you're done.
    and, what are you implying ?

  6. #6
    Senior Member BMWCCA's Avatar
    Join Date
    Feb 2006
    Location
    Virginia
    Posts
    5,521
    Quote Originally Posted by OldTechy View Post
    and, what are you implying ?
    What am I implying? It should be quite obvious: Had you looked in this site prior to purchasing the kits from Simply Speakers you'd have found multiple recommendations for Rick Cobb, some of them specific to his expertise in correctly supplying surrounds for the 128H and the issues of varying sizes within that driver family.

    You're coming here now with a problem and you're getting the same advice you'd have gotten had you checked here first. Simple. Don't shoot the messenger.

    I've used Simply Speakers successfully for surrounds for factory OE subs in automobiles, but since I don't find a 6-inch "sub" to be a critical application and I never analyzed the results carefully. And it wasn't my car. For classics such as the L150A, I will (and did) choose a proven supplier as recommended by the most authoritative experts on that specific product.

    Welcome.
    ". . . as you have no doubt noticed, no one told the 4345 that it can't work correctly so it does anyway."—Greg Timbers

  7. #7
    Junior Member
    Join Date
    Apr 2012
    Location
    77001
    Posts
    3
    " ... What am I implying? It should be quite obvious: ... "
    actually, I was hoping you might enlighten me about your specific reasons
    for your apparent disapproval of surrounds from Simplyspeakers?
    fwiw:
    Of course, I am aware of different cone-sizes,
    hence I included " 128H, 9-3/8", white-cone " in posting.

    I did communicate with looneytune2011 about his surrounds ( and 6 other vendors ).

    I chose the FSK-12A, as it's specs most closely matched
    my measurements and calculations for the best-fitting foam surround.
    ... (see below)

    I apologize for not researching here prior to my purchase ... mea culpa ...

    I don't understand your attitude ... as I just asked a question about fit.

    ...geeze, lighten-up sport. very welcome.


    Name:  Capture.jpg
Views: 703
Size:  59.3 KB

  8. #8
    Senior Member BMWCCA's Avatar
    Join Date
    Feb 2006
    Location
    Virginia
    Posts
    5,521
    You bought something that doesn't fit a speaker that many of us hear have experience in re-surrounding and you come here to seek remedy and you have a problem with my attitude? Is there anything more to discuss beyond they sold you wrong surrounds? If you want to argue about their charts and why they should be correct, then post some pictures. You're the one who said they don't fit right. I don't get it.

    Let me make this as simple as possible (at least until you post some pics to prove me wrong): You bought surrounds that don't fit right. It's not the first time I've heard of it from your vendor. At least you didn't have them do the work and then come here complaining about how they put the surrounds on the wrong side, as we often hear. Excuse me for suggesting you should "simply" get your surrounds from a qualified vendor who knows JBLs.


    We'd all love to see your L150As back in working order. Your hostility is misdirected.

    If the finished product doesn't look like this, it isn't correct:
    Name:  page1.jpg
Views: 466
Size:  187.5 KB
    ". . . as you have no doubt noticed, no one told the 4345 that it can't work correctly so it does anyway."—Greg Timbers

  9. #9
    Heather [Senorita member] hjames's Avatar
    Join Date
    Nov 2005
    Location
    DC 'burbs
    Posts
    7,471
    Sheesh - lighten up ... no need to pound that horse.


    I've used Rick's surrounds myself on the stuff I've done but,
    its not surgery, no one will die from it, its just freakin' speakers ...
    2ch - Oppo981, JoLida502, JBL L200+, KEF 105.4
    HT7- XDA-2, BDP93, 4b NRB, B&K 5ch amp, Vandy 3A, 2Ce, VCC1, TF600 & JBL 4641

+ Reply to Thread

Thread Information

Users Browsing this Thread

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

Similar Threads

  1. 128h-1 replacement in L65 Jubal
    By bob wood in forum Lansing Product Technical Help
    Replies: 7
    Last Post: 08-28-2009, 05:58 PM
  2. New foam surrounds superior to old foam?
    By robertbartsch in forum Lansing Product Technical Help
    Replies: 1
    Last Post: 04-29-2009, 03:42 PM
  3. Replies: 9
    Last Post: 12-15-2006, 12:26 AM
  4. replacement for 044 in L150a?
    By jleblanc in forum Lansing Product General Information
    Replies: 2
    Last Post: 09-07-2006, 08:09 PM
  5. L150A 2.5mh inductor in series with the 128h?
    By SteveC in forum Lansing Product Technical Help
    Replies: 4
    Last Post: 02-15-2004, 09:59 AM

Posting Permissions

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