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  1. If you download and read this article and then...

    If you download and read this article and then obtain a copy of this book it will give you some useful insights and an understanding on increasing the dynamic range of a loudspeaker system.
    ...
  2. I actually did have the lights dimming with the...

    I actually did have the lights dimming with the big JBLs at someoneís 21st with some big lights.

    The power wire out to the power pole was smoking. The Fire brigade came and shit happened.
  3. Well if the peaks are 107 at your listening...

    Well if the peaks are 107 at your listening distance is very loud.

    But l think your listening will change once you get some real bass happening below 100 hertz.
    You will be scared to turn it up...
  4. Burnt resisters is a tell tale sign of power...

    Burnt resisters is a tell tale sign of power amplifiers clipping. The square produced at high frequencies exhibits far greater power dissipation than a sine wave.
  5. Hi Rob, The link to the Harman tech sheets was...

    Hi Rob,

    The link to the Harman tech sheets was previously broken. Is it now working?

    Ian
  6. Given one driver was un sealed and repaired itís...

    Given one driver was un sealed and repaired itís probably a lousy aftermarket diaphragm was fitted. A fix is to order a Radian diaphragm. If and when the good one dies replace that with a matching...
  7. https://www.audioheritage.org/vbulletin/attachment...

    https://www.audioheritage.org/vbulletin/attachment.php?attachmentid=14856&d=1144944024

    I would simply replace the capacitors with more modern parts.

    These jbl networks have inductors with...
  8. No no. I remember going through that phase of...

    No no. I remember going through that phase of making everything louder than everything else. Itís absolutely normal. Trust me.

    The thing is are your 107 db peaks Klipschorn peaks or JBL peaks? ...
  9. Good luck with your plans. It helps to put...

    Good luck with your plans.

    It helps to put everything in perspective.

    Hi end hifi

    The K2 systems are impressive but equally important is attention to room acoustics and careful setting up....
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    I am sure there is some confusion in all of this....

    I am sure there is some confusion in all of this. Emails are not necessarily the best way of resolving a dispute.

    The offer to independently inspect the packaging and the product has been accepted...
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    As a first step if you both are in agreement...

    As a first step if you both are in agreement further clarity is needed l could inspect the kit if itís still with the loudspeaker repair company next week. Perhaps only new surrounds are required....
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    In respect to your last statement both Barry and...

    In respect to your last statement both Barry and l did mention the packaging (in post 25).

    Preventive action is the only effective way of minimising this type of issue. Thatís easy to say in...
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    Where’s Judge Judy? It reminds me of the...

    Where’s Judge Judy?

    It reminds me of the dust up between Lancer and Miss Orchid.
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    Not taking sides here. Just looking at these...

    Not taking sides here.

    Just looking at these posts puts anyone off privately sourcing cone kits for vintage JBL driver. Iíve had similar experiences with other aftermarket kits.

    In my own...
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    I think we are all talking’s about the same thing...

    I think we are all talking’s about the same thing here.

    Looking at the jbl 2370A spec sheet below the response can be interpreted as a bump between 2-4 khertz and a couple of db loss of level up...
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    I have not used these particular kits. Those SS...

    I have not used these particular kits.
    Those SS Audio kits are so cheap just try them out to see what you think. Ken at Upland Loudspeaker Service may be able to help you with a quality 2234...
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    An additional thought would be to make your MTM...

    An additional thought would be to make your MTM using three separate modules stacked on top of each other. That way you can play around with different horns or other options as l mentioned or even...
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    Firstly if you are considering your own diy...

    Firstly if you are considering your own diy loudspeaker what you plan is entirely up to you. The notion of a diy loudspeaker is that you should be able to build an equally good or better loudspeaker...
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    You have some good plans. The difference with...

    You have some good plans.

    The difference with the 4435 is one woofer works only below 100 hertz. This compliments the other woofer with the port tuning to produce a response down to 30 hertz with...
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    https://jblpro.com/en/site_elements/2225h-j-inform...

    https://jblpro.com/en/site_elements/2225h-j-information

    Modelling the 2225 driver with its 97 db sensitivity gives a QB3 alignment with a box volume of 50 litres and a port tuning of 56 hertz and...
  21. No. On observation the construction looks fine. ...

    No. On observation the construction looks fine.

    http://www.audioheritage.org/vbulletin/showthread.php?38036-Jbl-250ti-Jubilee-vs-previous-models
  22. If you search EBay someone in Idaho called...

    If you search EBay someone in Idaho called loudspeakerchef (1057) is making these crossovers.

    A link to crossovers used in this system
    ...
  23. In more detail most of the JBL consumer woofers...

    In more detail most of the JBL consumer woofers had a very low Qts due to the large magnets and large Vas. So JBL could get away with relatively high dcr values of 0.5 ohms in the woofer chokes. The...
  24. Hi Eric, Thank you for elaborating on your...

    Hi Eric,

    Thank you for elaborating on your plan.

    If the LX5 is still intact you could conceivably replace specific parts with like values using more modern and improved parts. For example the...
  25. Hi Eric, I spent a few hours simulating tapped...

    Hi Eric,

    I spent a few hours simulating tapped air cor high pass filter - attenuators tonight.

    Your measurements are consistent with my simulations. Unfortunately the tapped air core approach...
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