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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: 1,568
    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: 33,930
    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: 107,524
    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: 55,081
    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: 26,471
    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: 22,652
    10-20-2006, 02:48 AM Go to last post
  1. Does charge coupling really work?

    Started by Kay Pirinha, 08-21-2019 07:30 AM
    4 Pages
    1 2 3 4
    • Replies: 58
    • Views: 2,315
    Yesterday, 09:00 PM Go to last post
  2. Does the LE15A look like a original

    Started by jblwolf, Yesterday 12:40 PM
    • Replies: 2
    • Views: 54
    Yesterday, 07:01 PM Go to last post
  3. 4641 vs 4645c

    Started by darkraver, 09-12-2019 09:52 PM
    • Replies: 4
    • Views: 83
    09-13-2019, 10:14 AM Go to last post
  4. JBL Blueprints.....

    Started by Daddyo1935, 08-20-2019 05:49 AM
    • Replies: 6
    • Views: 413
    09-11-2019, 05:09 AM Go to last post
  5. Is this JBL L56 authentic?

    Started by BuckRegal, 09-08-2019 01:37 PM
    • Replies: 13
    • Views: 282
    09-10-2019, 06:38 PM Go to last post
  6. JBL 4652 modifing

    Started by william2233, 09-08-2019 08:44 AM
    • Replies: 0
    • Views: 63
    09-08-2019, 08:44 AM Go to last post
  7. JBL L200 woofer removal

    Started by tinpan, 08-29-2019 02:17 PM
    • Replies: 5
    • Views: 245
    09-07-2019, 09:56 AM Go to last post
    • Replies: 7
    • Views: 231
    09-06-2019, 12:36 AM Go to last post
  8. RS 3087 expiry date

    Started by budney, 09-03-2019 08:42 AM
    • Replies: 3
    • Views: 116
    09-03-2019, 01:17 PM Go to last post
  9. 2216 nd1ís In L300s

    Started by Bluegrassmaven, 08-13-2019 05:04 PM
    2 Pages
    1 2
    • Replies: 25
    • Views: 1,250
    08-31-2019, 05:53 AM Go to last post
  10. Please help with 128H's in L150A's. :)

    Started by DerekTheGreat, 07-12-2019 05:29 AM
    7 Pages
    1 2 3 4 5 ... 7
    • Replies: 103
    • Views: 5,084
    08-30-2019, 06:28 AM Go to last post
    • Replies: 1
    • Views: 199
    08-24-2019, 05:01 PM Go to last post
  11. How to determine proper JBL polarity

    Started by Eric M., 08-20-2019 02:52 PM
    2 Pages
    1 2
    • Replies: 17
    • Views: 671
    08-23-2019, 02:18 PM Go to last post
  12. is it a 2123H or J

    Started by kartsmart, 08-18-2019 06:52 AM
    • Replies: 6
    • Views: 389
    08-23-2019, 06:27 AM Go to last post
  13. Jbl 4429 and MAC6700

    Started by NEWYORKER, 08-21-2019 07:45 PM
    • Replies: 3
    • Views: 272
    08-22-2019, 07:33 PM Go to last post
  14. JBL 4311B Control Monitor Polarity Confusion

    Started by Thrifty HiFi, 05-29-2019 07:23 PM
    2 Pages
    1 2
    • Replies: 20
    • Views: 1,997
    08-20-2019, 06:53 PM Go to last post
  15. Question JBL L-45 Flair (S4 Loaded)

    Started by Steve w/cheeks, 08-21-2012 05:32 AM
    • Replies: 2
    • Views: 4,459
    08-18-2019, 06:43 AM Go to last post
  16. 5234A card identification

    Started by quindecima, 08-13-2019 06:44 PM
    • Replies: 2
    • Views: 230
    08-16-2019, 04:01 PM Go to last post
  17. Poll Poll: More Help with L150A's: Tweeter & Crossover Swap Advice Wanted

    Started by DerekTheGreat, 08-02-2019 03:32 AM
    2 Pages
    1 2
    • Replies: 23
    • Views: 1,155
    08-12-2019, 04:16 AM Go to last post
  18. Replace throat 2440 / 2441 in this way?

    Started by Richard Long, 08-05-2019 04:17 AM
    throat 2441 replace
    • Replies: 2
    • Views: 340
    08-10-2019, 03:42 AM Go to last post
  19. JBL 123A-1 recone

    Started by bobcoaudio, 08-08-2019 10:34 AM
    • Replies: 1
    • Views: 226
    08-08-2019, 10:48 AM Go to last post
  20. Ethyl Merman Crossover Schematic

    Started by toddalin, 05-01-2019 05:09 PM
    • Replies: 12
    • Views: 1,374
    08-05-2019, 10:53 PM Go to last post
  21. DR8044TI Diaphragm NOS

    Started by robertg, 07-31-2019 02:43 PM
    • Replies: 3
    • Views: 378
    08-01-2019, 08:58 PM Go to last post
  22. LE15 repair/restoration

    Started by budney, 07-24-2019 10:00 AM
    2 Pages
    1 2
    • Replies: 17
    • Views: 1,241
    08-01-2019, 11:14 AM Go to last post
  23. Dust Cap in or Out?

    Started by mbd7, 06-12-2006 06:52 PM
    2 Pages
    1 2
    • Replies: 15
    • Views: 8,776
    08-01-2019, 04:07 AM Go to last post

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