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Thread: JBL L110A refoam and stands

  1. #16
    Senior Member RMC's Avatar
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    I added the comments on the list

    LE 261 (might be LE26-1? no LE 26 on the list), 3.4-4.3 ohm, Plastic Flange

    116H 4.8-5.6 ohm

    033 3.6-4.4 ohm, Test with Network

    LE5-10 4.9-6.1 ohm

    LE 111H 4.3-5.2 ohm, Aquaplas on back of cone

    * Not too many drivers at a time please, i do this when i get some spare time.

  2. #17
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    Quote Originally Posted by RMC View Post
    I added the comments on the list

    LE 261 (could be LE26-1? no LE 26 on the list), 3.4-4.3 ohm, Plastic Flange

    116H 4.8-5.6 ohm

    033 3.6-4.4 ohm, Test with Network

    LE5-10 4.9-6.1 ohm

    LE 111H 4.3-5.2 ohm, Aquaplas on back of cone

    * Not too many at a time please, i do this when i get some spare time.
    Thank you very much, you helped a lot.
    If you have a little time to take look at LE111A woofer specs and post it here.

  3. #18
    Senior Member RMC's Avatar
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    Requested DCR specs for LE111A

    Min. 5.5 - Max. 6.5 Ohms, Aquaplas on the back of the cone

  4. #19
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    Quote Originally Posted by RMC View Post
    Requested DCR specs for LE111A

    Min. 5.5 - Max. 6.5 Ohms, Aquaplas on the back of the cone
    Thank you!
    According to the posted specs the LE111A has nearly 1.2 ohm higher DCR than the LE111H.
    The L110 has (with 033, LE5-10 and LE111A drivers) higher resistance (6.3-6.6 ohm) measured on speaker terminals. My L110A (with 033, LE5-10 and LE111H drivers) has 5.1 and 5.2 ohm.

  5. #20
    Senior Member RMC's Avatar
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    Just to be sure your results are correct, have you "calibrated" your DMM, meaning measured its residual resistance? Put DMM in ohm mode, join the two test leads together for a few seconds until data stabilizes, and note the number indicated, which you must subtract from DCR driver or speaker readings.

    Depending on DMM accuracy (quality and price) it may show enough resistance by itself to falsely indicate a driver is off specs. My low cost ($25-30.) DMM has 0.6 - 0.7 ohm residual resistance (enough to fool a DCR reading), while the $80. unit has 0.0-0.1 (nice), and the $150. DMM is a perfect zero residual resistance. Try it with yours, you'll see. Mabe you'll need to revise your DCR numbers.

    It is possible JBL's switch to ferrite magnets has caused some other changes, like in DCR numbers.

  6. #21
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    Quote Originally Posted by RMC View Post
    Depending on DMM accuracy (quality and price) it may show enough resistance by itself to falsely indicate a driver is off specs. Maybe you'll need to revise your DCR numbers.
    You were right. I have to subtract 0.2 ohms. So the real DCR values for speakers are 4.9 ohm and 5.0 ohm, measured on terminals.

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