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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: Looking for JBL " Pro Note " Vol. 1 Issue # 6 and # 7 July 1973

    Started by JBLPRO, 05-12-2022 06:58 AM
    2 Pages
    1 2
    • Replies: 25
    • Views: 17,171
    05-20-2022, 05:33 PM Go to last post
  2. Sticky Thread Sticky: READ ME - Forum Rules

    Started by Don McRitchie, 06-28-2004 07:27 AM
    • Replies: 4
    • Views: 52,688
    03-28-2021, 03:03 PM Go to last post
  3. Thumbs up Sticky Thread Sticky: JBL Technical Information - Links

    Started by boputnam, 02-06-2008 01:34 AM
    • Replies: 5
    • Views: 56,089
    03-23-2021, 02:25 PM Go to last post
  4. Sticky Thread Sticky: JBL Technical Notes - LOT'S of them!!!

    Started by DogBox, 06-19-2019 08:01 PM
    • Replies: 9
    • Views: 35,914
    08-22-2019, 07:50 PM Go to last post
  5. Sticky Thread Sticky: 4340 & 4341 references thread

    Started by hjames, 05-11-2007 04:40 PM
    2 Pages
    1 2
    • Replies: 16
    • Views: 83,431
    06-11-2016, 12:00 PM Go to last post
  6. 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: 232,789
    06-24-2015, 09:05 AM Go to last post
  7. Sticky Thread Sticky: 4343 References Thread

    Started by hjames, 05-30-2007 05:01 PM
    2 Pages
    1 2
    • Replies: 15
    • Views: 113,870
    10-30-2012, 11:35 PM Go to last post
  8. Sticky Thread Sticky: Lansing-related Patent Parade

    Started by moldyoldy, 06-05-2007 01:33 AM
    3 Pages
    1 2 3
    • Replies: 34
    • Views: 50,552
    06-23-2007, 12:01 AM Go to last post
  1. 4350 with 4001?

    Started by martin2395, 02-18-2024 02:53 PM
    • Replies: 6
    • Views: 724
    02-19-2024, 06:27 AM Go to last post
  2. D2430K compression driver information?

    Started by Dave Zan, 08-23-2012 10:45 PM
    6 Pages
    1 2 3 4 5 ... 6
    • Replies: 83
    • Views: 110,793
    02-17-2024, 03:54 AM Go to last post
  3. Re-edging 1500Al-1?

    Started by S.O.Stefansson, 02-13-2024 07:26 AM
    • Replies: 10
    • Views: 1,648
    02-16-2024, 11:28 AM Go to last post
  4. Increasing HF attenuation on S3100 MKII network

    Started by kelossus, 02-09-2024 08:41 PM
    3 Pages
    1 2 3
    • Replies: 32
    • Views: 4,582
    02-11-2024, 06:48 PM Go to last post
  5. Replacement Diaphragms for my M9500

    Started by ngccglp, 02-05-2024 05:43 PM
    • Replies: 8
    • Views: 1,102
    02-08-2024, 06:43 PM Go to last post
  6. 2234 recone kit in E 145 baskets

    Started by MoD, 08-04-2021 12:55 AM
    2 Pages
    1 2
    • Replies: 22
    • Views: 9,245
    01-31-2024, 06:20 AM Go to last post
  7. LE14H-1 Freq. Range

    Started by dennis j leisz, 01-01-2004 10:48 AM
    2 Pages
    1 2
    • Replies: 20
    • Views: 18,527
    01-30-2024, 10:46 AM Go to last post
  8. JBL Equalizer SPP-SWEQ Power Supply

    Started by Robh3606, 01-27-2024 06:27 AM
    • Replies: 7
    • Views: 1,554
    01-27-2024, 09:51 PM Go to last post
  9. 250Ti BQ LTD crossover issue

    Started by Dagfinn, 01-20-2024 05:40 AM
    • Replies: 6
    • Views: 1,348
    01-20-2024, 04:10 PM Go to last post
  10. Jbl sr4715a

    Started by MoD, 01-10-2024 04:06 AM
    • Replies: 4
    • Views: 1,959
    01-15-2024, 07:40 AM Go to last post
  11. My 044 screens are bent

    Started by jim henderson, 03-18-2014 09:21 PM
    • Replies: 9
    • Views: 6,308
    01-09-2024, 03:24 AM Go to last post
    • Replies: 1
    • Views: 1,805
    01-04-2024, 07:09 PM Go to last post
  12. Differences 2225 vs 2226?

    Started by robertbartsch, 09-12-2008 07:38 AM
    • Replies: 5
    • Views: 11,149
    01-04-2024, 06:14 AM Go to last post
  13. Wiring the 3107 crossovers in 4350

    Started by neanderthal, 12-04-2008 07:44 PM
    • Replies: 5
    • Views: 5,856
    12-27-2023, 10:15 PM Go to last post
  14. Urei 811B schematic help needed

    Started by rusty jefferson, 08-12-2013 04:02 PM
    2 Pages
    1 2
    • Replies: 24
    • Views: 9,897
    12-01-2023, 08:23 AM Go to last post
  15. Possible Altec 288 restoration !

    Started by gjm, 11-19-2023 10:04 PM
    • Replies: 6
    • Views: 1,715
    11-20-2023, 05:56 PM Go to last post
  16. 045ti

    Started by dezmond, 11-16-2023 11:13 AM
    • Replies: 10
    • Views: 1,465
    11-18-2023, 10:33 AM Go to last post
  17. JBL DX-1 Input/Output Cards

    Started by pasadena, 11-06-2003 04:21 AM
    • Replies: 8
    • Views: 10,531
    11-14-2023, 01:53 PM Go to last post
  18. Touch up JBL Grey paint?

    Started by Harkness, 10-19-2023 04:52 PM
    • Replies: 8
    • Views: 1,962
    10-24-2023, 07:59 AM Go to last post
  19. JBL 2231 genuine or knockoff?

    Started by martin2395, 10-13-2023 07:03 AM
    3 Pages
    1 2 3
    • Replies: 31
    • Views: 3,770
    10-16-2023, 06:42 AM Go to last post
  20. JBL electronic crossover mod

    Started by Pellets, 10-09-2023 07:50 AM
    • Replies: 4
    • Views: 4,295
    10-11-2023, 02:22 AM Go to last post
  21. Help - Is this a genuine 2405h?

    Started by marmelbirne123, 10-09-2023 12:48 AM
    • Replies: 3
    • Views: 2,877
    10-09-2023, 08:18 AM Go to last post
  22. OEM 2421 Diaphragms just won't fit

    Started by kelossus, 09-28-2023 10:13 PM
    • Replies: 7
    • Views: 1,370
    10-05-2023, 12:31 PM Go to last post
    • Replies: 2
    • Views: 874
    09-28-2023, 10:58 AM Go to last post
  23. JBL 4520 question

    Started by Tube Radio, 09-17-2023 05:08 PM
    2 Pages
    1 2
    • Replies: 15
    • Views: 2,442
    09-21-2023, 10:54 PM Go to last post

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