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Forum: Lansing Product Technical Help

Questions on repairing, restoring or upgrading factory systems and components from JBL, Altec or LMCo

  1. Sticky Thread Sticky: JBL Technical Notes - LOT'S of them!!!

    Started by DogBox, 06-19-2019 08:01 PM
    • Replies: 9
    • Views: 5,019
    08-22-2019, 07:50 PM Go to last post
  2. Sticky Thread Sticky: 4340 & 4341 references thread

    Started by hjames, 05-11-2007 04:40 PM
    2 Pages
    1 2
    • Replies: 16
    • Views: 39,176
    06-11-2016, 12:00 PM Go to last post
  3. Post Sticky Thread Sticky: Stock Altec/JBL Physical Enclosure Information

    Started by 4313B, 09-11-2004 11:56 AM
    4 Pages
    1 2 3 4
    • Replies: 51
    • Views: 117,943
    06-24-2015, 09:05 AM Go to last post
  4. Sticky Thread Sticky: 4343 References Thread

    Started by hjames, 05-30-2007 05:01 PM
    2 Pages
    1 2
    • Replies: 15
    • Views: 62,156
    10-30-2012, 11:35 PM Go to last post
  5. Thumbs up Sticky Thread Sticky: JBL Technical Information - Links

    Started by boputnam, 02-06-2008 12:34 AM
    • Replies: 1
    • Views: 28,636
    08-05-2008, 06:54 AM Go to last post
  6. Sticky Thread Sticky: READ ME - Forum Rules

    Started by Don McRitchie, 06-28-2004 07:27 AM
    • Replies: 2
    • Views: 24,806
    10-20-2006, 02:48 AM Go to last post
  1. Replacement diaphragm for 2421A?

    Started by Kay Pirinha, 04-03-2020 09:17 AM
    • Replies: 10
    • Views: 193
    Today, 10:54 AM Go to last post
  2. JBL 2440 off-center vc gap.

    Started by retro soulman, 04-03-2020 07:57 AM
    • Replies: 8
    • Views: 162
    04-04-2020, 01:42 PM Go to last post
  3. foam or felt in the cover

    Started by louped garouv, 10-27-2009 06:47 PM
    2 Pages
    1 2
    • Replies: 24
    • Views: 10,800
    04-04-2020, 02:45 AM Go to last post
    • Replies: 5
    • Views: 197
    04-03-2020, 09:05 PM Go to last post
  4. Altec N-3000-E Mystery

    Started by soundguy64, 12-18-2018 11:08 PM
    • Replies: 1
    • Views: 596
    04-02-2020, 05:12 AM Go to last post
  5. 2235 white recone kit

    Started by budney, 02-09-2020 10:32 AM
    2 Pages
    1 2
    • Replies: 18
    • Views: 1,220
    04-01-2020, 04:21 PM Go to last post
  6. Underhung voice coil specs

    Started by budney, 03-24-2020 08:58 AM
    • Replies: 9
    • Views: 475
    04-01-2020, 04:03 PM Go to last post
    • Replies: 0
    • Views: 45
    04-01-2020, 03:34 PM Go to last post
  7. L96 question

    Started by taro, 03-29-2020 04:47 AM
    • Replies: 10
    • Views: 332
    03-31-2020, 05:21 PM Go to last post
    • Replies: 0
    • Views: 63
    03-31-2020, 01:03 PM Go to last post
  8. Effects of loss of magnetism?

    Started by Eric M., 03-26-2020 11:44 AM
    • Replies: 11
    • Views: 351
    03-30-2020, 03:26 AM Go to last post
  9. L 91 lenes

    Started by JBeL, 03-26-2020 03:42 AM
    • Replies: 7
    • Views: 368
    03-29-2020, 11:57 AM Go to last post
  10. LSR Speaker Cable Possibilities

    Started by jbl4435, 03-24-2020 03:50 PM
    • Replies: 3
    • Views: 232
    03-26-2020, 05:27 PM Go to last post
  11. Speaker Build

    Started by Mcline5804, 03-17-2020 08:34 AM
    • Replies: 2
    • Views: 228
    03-26-2020, 11:11 AM Go to last post
  12. Help Needed with JBl 2121 midrange dustcap

    Started by jbljr, 03-23-2020 09:30 PM
    • Replies: 1
    • Views: 146
    03-25-2020, 09:17 PM Go to last post
    • Replies: 12
    • Views: 313
    03-25-2020, 03:32 PM Go to last post
  13. 2121H Dust cap issue fixed: improvement

    Started by Goldjazz, 03-18-2020 08:21 PM
    • Replies: 8
    • Views: 439
    03-23-2020, 10:01 PM Go to last post
  14. C500G midrange: mounting

    Started by werewolf, 03-23-2020 02:21 PM
    • Replies: 0
    • Views: 110
    03-23-2020, 02:21 PM Go to last post
  15. JBL 2122H recone question

    Started by bjh, 03-17-2020 08:18 AM
    2122h, 4345, recone
    • Replies: 6
    • Views: 442
    03-22-2020, 10:16 PM Go to last post
  16. LE175 Question

    Started by pmakres1, 03-20-2020 03:08 PM
    • Replies: 7
    • Views: 301
    03-21-2020, 02:25 PM Go to last post
  17. Looking For More Punch From My 2245, 4345 Clone

    Started by robertg, 03-01-2020 03:38 PM
    4 Pages
    1 2 3 4
    • Replies: 51
    • Views: 2,252
    03-21-2020, 09:50 AM Go to last post
  18. JBL 2245H with crazy TS specs measured with Dayton DATS 3

    Started by Morten Krogh, 02-27-2020 11:22 AM
    2 Pages
    1 2
    • Replies: 28
    • Views: 1,652
    03-20-2020, 02:46 AM Go to last post
  19. 4312 woofer

    Started by Rocky, 03-14-2020 06:59 PM
    • Replies: 1
    • Views: 221
    03-14-2020, 08:06 PM Go to last post
  20. Repair/Reinforce JBL 035TIA Tweeter Terminals

    Started by vintagerocks, 03-12-2020 07:38 PM
    • Replies: 2
    • Views: 262
    03-13-2020, 09:56 AM Go to last post
  21. Jbl se401 /402 amp energizer transformer problem

    Started by script56, 02-10-2014 06:05 AM
    • Replies: 3
    • Views: 1,474
    03-08-2020, 04:54 AM Go to last post

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