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    These scenarios are typical of how loudspeaker...

    These scenarios are typical of how loudspeaker owners approach using an active crossover. They give you an idea of how the active crossover and some optional modules and kits can work together to...
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    The. Thinking Cap Customer You own JBL 4435...

    The. Thinking Cap Customer

    You own JBL 4435 and you have longed for a better power amp but itís really expensive.
    You read a review of a Quick Silver power amp but is rated at only 50+50 watts....
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    Edit. Bells and Whistles or Useful Tools ď4...

    Edit. Bells and Whistles or Useful Tools

    ď4 Options for low frequency shelf filters, driver EQ, Room Curves EQ, CD horn EQ, Sub sonic filter, driver Delay. Full active via internal adjustments.Ē...
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    Your showing your age...LOL. In some ways...

    Your showing your age...LOL.


    In some ways yes as to the functionality.

    I am not out to make a crossover that is a universal one size fits all or will be everything to everyone.

    The...
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    Edited text and added a pdf diagram to make the...

    Edited text and added a pdf diagram to make the post easier to understand


    http://www.audioheritage.org/vbulletin/showthread.php?42350-STOP-PRESS-Bombshell&p=430027&viewfull=1#post430027
    ...
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    Hello everyone who has commented in this thread...

    Hello everyone who has commented in this thread and the followers who are interested.

    An update

    Here in Down Under the state boarders are re opening on the 17th of December 2021. That signals...
  7. Ditto. I have a pair of mint LE 85, 2312/2307 ...

    Ditto.

    I have a pair of mint LE 85, 2312/2307 and reconed 2235 waiting for that project.
  8. It could be the difference in gain. Mr Widget....

    It could be the difference in gain.

    Mr Widget. On my comparison with a Marantz 140 power amp and Son of Ampzilla into a Klipschorn. The Son of Ampzilla was so obviously more powerful in this...
  9. The 4331 isn't a DD67000. It just much sounded...

    The 4331 isn't a DD67000. It just much sounded better than we expected in comparison.

    This is the thing.

    A very good loudspeaker can sound so so if not set up so it has a fighting change. ...
  10. Hi Barry, Looking at the schematic and...

    Hi Barry,

    Looking at the schematic and description it does have a Darlington output stage which back in the day was not that common.

    Advantages
    It offers very high current gain in comparison...
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    Either that or make up a Tad style enclosure for...

    Either that or make up a Tad style enclosure for the 2335H and grab. Joseph Crowe bi radial horn which based on tests is the NexGen Tad 4001 horn. Joseph can design the throat to match your driver. ...
  12. Have use used the 4331 in its original form? ...

    Have use used the 4331 in its original form?

    What is your opinion of the stock 4331?

    What are you trying to achieve?

    I have heard a stock 4331 set up by Greg Timbers with room EQ REW and...
  13. The 4412 is a relatively low efficiency monitor...

    The 4412 is a relatively low efficiency monitor and this ultimately impacts on its ability to reproduce the recording at the original levels.

    The 4645B, the 2123H and a suitably horn and driver...
  14. Placebo? The 4350's do have LIVE presentation....

    Placebo?

    The 4350's do have LIVE presentation. So a very transparent audio signal path will show up any problem with a recording or the source equipment.

    The 6290 may have some performance...
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    I suggest trying the 4430 as it is then for a...

    I suggest trying the 4430 as it is then for a while with your new networks.

    If you lust for further sonic enhancement the road ahead splits two ways:

    1. Install a Radian one inch compression...
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    Hello young Skywalker, Below is a drafted up...

    Hello young Skywalker,

    Below is a drafted up schematic that should take your 4430 system well past light speed!

    Donít tell anyone l told you so because they might feel precious over their stock...
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    Hi Dave, If your power amp had 4 binding posts...

    Hi Dave,

    If your power amp had 4 binding posts per channel then l think you are referring to what is termed ďBi - Wiring. This is where the full passive crossover is used but separate wires lead...
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    I will draw you to sketch of the changes over the...

    I will draw you to sketch of the changes over the weekend.
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    More questions? Seriously 😳. I donít think...

    More questions? Seriously 😳.
    I donít think there is a schematic.
    The 18 gauge is fine.
    Only one 9 volt battery is required.

    If you can arrange a bottle of Knob Creek Bourbon l will sort out...
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    Having done this myself l would not recommend...

    Having done this myself l would not recommend attempting to remove the switch unless the poster has experience in soldering and suitable tools. Damage to the pcb and the switch is likely which will...
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    http://www.audioheritage.org/vbulletin/showthread....

    http://www.audioheritage.org/vbulletin/showthread.php?13930-JBL-3145-stock-crossover.-A-pictorial


    https://jbl43.net/catalogs/networks/3145_Network.pdf

    The first link is a thread l wrote which...
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    You wil need to hunt around. If you canít find...

    You wil need to hunt around.

    If you canít find them use one of the other options l listed such as the Clarity cap SA bypassed with Auricap 0.01 uF. That is a proven combo.

    2.5 mH is close...
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    1. Modern polypropylene caps are more transparent...

    1. Modern polypropylene caps are more transparent but they vary in price and quality. Mylar caps can sound muffled by comparison. Jbl bypassed the Mylar caps with small polypropylene caps to help...
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    https://audiokarma.org/forums/index.php?threads/ch...

    https://audiokarma.org/forums/index.php?threads/cheap-and-pretty-easy-jbl-4430-upgrade.537606/

    Jbl don’t bypass the Solen 250v Fast Caps in the charge coupled crossovers. I would not recommend...
  25. The impedance peaks are different. One of the...

    The impedance peaks are different.

    One of the magnets being Alnico could be slighted magnetised.

    Once you have the drivers in a tuned bass reflex enclosure run impedance curves and do a...
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