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    Hi Earl (and others), I did not want to be...

    Hi Earl (and others),

    I did not want to be misleading at all.

    Sorry if it was.

    All I wanted was to get the best possible result with the existing drivers in my L80Tīs without modifying the...
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    Great. That helps me a lot. At least it...

    Great. That helps me a lot.

    At least it confirms that my basic understanding of wiring is correct. I will implement another fixed pad.

    The point is that I donīt have the L-pads and I am not...
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    I apologize if my words were confusing or even...

    I apologize if my words were confusing or even annoying.

    I will follow your advice and put the fixed pads where LP1 / LP2 are.

    By "ground" I only meant that the other end of the parallel...
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    I do basically know how to do this. Was just...

    I do basically know how to do this.

    Was just looking for a confirmation for this specific case (where I wanted to combine the pre - resistor and L-pad setting into one serial / parallel).
    ...
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    Hi, Rob! Thanks for your advice. I am aware...

    Hi, Rob!

    Thanks for your advice.

    I am aware of the 4410a network.

    It is much more complex and I would like to use my existing components.

    Basically it should be a quite easy calculation...
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    4410 network question

    Hi!

    I am still trying to fully understand the 4410 network and to implement it without attenuators.

    All I intend to do is to copy the 0 dB setting for mid and high frequency with fixed L-pads...
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    Thank you very much, Rob. That helps me a lot. ...

    Thank you very much, Rob. That helps me a lot.

    Now the high frequency section of the schematic is easy to copy.

    Since I don't have those pads I just want to avoid having to perform trial and...
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    Trying to ask in a different way: What impedance...

    Trying to ask in a different way: What impedance (ohms) do the original l-pads of the 4410 have?

    Merry Christmas everyone!
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    Hi Rob (and others ), I would like to thank...

    Hi Rob (and others ),

    I would like to thank you for your advice and the link provided.

    I will be receiving my order tomorrow with an assortment of resistors and will proceed with these fixed...
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    This would certainly be a good idea. ...

    This would certainly be a good idea.

    Unfortunately I do not have those l-pads...

    I am fully aware of L-pad calculators, just not too confident about the actual effective sensitivity values
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    My crossover is somewhere in between. It has a...

    My crossover is somewhere in between. It has a 13.5 mfd cap for the midrange.

    Everybody seems to like the 4410 sound, whereas there are different opinions about t vs t3.

    I am looking for a...
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    4410 crossover in a L80T (GI)

    Hi!

    My project is to implement a 4410 network into an existing JBL L80T GI speaker.

    There is only two questions left:

    Do I get it right, that I can use the existing crossover layout...
  13. Thread: Jbl l80t

    by dub
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    Thanks for all your advice. One last thing...

    Thanks for all your advice.

    One last thing before I place my order:


    My budget is a little low so I will limit myself to the most important components concentrating on the different crossover...
  14. Thread: Jbl l80t

    by dub
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    Hmmm... since I will do the crossovers anyway I...

    Hmmm... since I will do the crossovers anyway I am willing to try the 4410 schematic on these.

    Will report how it sounds...
  15. Thread: Jbl l80t

    by dub
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    Thanks for the advice. Will be very careful. ...

    Thanks for the advice. Will be very careful.

    Made a photo of the crossover. Do they look original? They have Bennic caps (looking like MKT-type), one is 13.5mF instead of the expected 17mF...
    ...
  16. Thread: Jbl l80t

    by dub
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    Jbl l80t

    Hi!

    Could somebody familiar with this model confirm my thoughts about the JBL L80T?
    I would like to get the best out of this design.
    I am aware of the T3 variant but I think I would like to ...
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    Sorry, I know this has been discussed many times...

    Sorry, I know this has been discussed many times before...

    Of course those 24mF caps in parallel to woofer and mid are NP electrolytics as the schematic says.

    I think I will replace those.
    ...
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    Replacing C3 and C10 in 250TI crossover

    Hello to the Forum!

    I have just recently bought a pair of 250TI's (first original version).

    Serial numbers are 1972 and 1973, so most probably 25 years old.
    As a first step I do not want to...
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