Results 1 to 3 of 3

Thread: L 100 t issues with mid and tweeters

Hybrid View

Previous Post Previous Post   Next Post Next Post
  1. #1
    Member
    Join Date
    Mar 2011
    Location
    on the edge
    Posts
    33

    L 100 t issues with mid and tweeters

    Hi all,

    It's been a couple of years since my last JBL adventure, here we go again!

    I bought a pair of L100t speakers brand new in the late 80's. They departed from my custody along with my ex wife. Last summer, 20 years later, she was moving and asked me if I wanted the speakers.

    So I went and picked them up. They were in sorry condition. I just finished the cosmetic restoration and plugged them in. It seems the high end is totally missing. I think one of the mid range drivers does not work at all and both tweeters seem really feeble.

    I've measured the impedance of each driver. The tweeters measure 4.4 and 4.5 ohms respectively. The offending mid driver reads 4 ohms. So the drivers appear to be ok. Unless I can have blown drivers with measured impedance.

    I pulled the big drivers out and had a look just to see if any wires were unconnected but it all looked ok.

    So I assume I should be looking at the crossover arrays? Recapping them? Thanks for any suggestions.

    I've done some searching and find references to rebuilding the crossovers to t3 specs, but I would just as soon keep it stock. I remember loving these speakers when they were new, and although no doubt I have lost some of my upper frequency hearing in the last 25 years, these still need a lot of help at the present moment.

    Cheers all!

    Bernie

  2. #2
    Senior Member rdgrimes's Avatar
    Join Date
    Aug 2008
    Location
    New Mexico, USA
    Posts
    2,216
    I've seen more than a few drivers with OK DCR measured, that didn't work. Until proven otherwise, assume the drivers are toast. Easy enough to check them out of the box with a direct connect to some input. I'd expect a crossover that passes a visual inspection to at least make some sound.

  3. #3
    Senior Member Wornears's Avatar
    Join Date
    Jul 2006
    Location
    North Carolina
    Posts
    146

    L100t Return

    The attached L100T tech sheet may prove useful. I've found my L100t pair to be a nice balance of size and sound. Replacement tweeters and mids come up on eBay regularly. Although if I were looking for replacements I'd start with a query on this site.

    Hope you get yours up and running soon.
    Attached Images Attached Images

Thread Information

Users Browsing this Thread

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

Similar Threads

  1. 128h issues
    By takenodisk in forum Lansing Product Technical Help
    Replies: 5
    Last Post: 10-10-2010, 04:55 PM
  2. IE6 Issues
    By Don McRitchie in forum Forum Feedback
    Replies: 0
    Last Post: 04-26-2010, 02:52 PM
  3. HPM 100 ISSUES
    By Turnitup in forum Miscellaneous Gear
    Replies: 2
    Last Post: 08-14-2006, 10:47 PM

Posting Permissions

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