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    As l am sure you all appreciate COVID 19 is going...

    As l am sure you all appreciate COVID 19 is going to be around for a while and unfortunately this has impacted on plans to get product to market on a number of levels.

    However, l thought l would...
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    Very nice.

    Very nice.
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    Hi Giuseppe, I hope these responses provide...

    Hi Giuseppe,

    I hope these responses provide you with some guidance.

    The Jbl 2118 8 inch driver is another option. This is a relatively high efficiency mid bass driver. But bass response is...
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    Have a look at these threads for guidance. A...

    Have a look at these threads for guidance.

    A better approach would be to consider the L220/L222 components and crossover schematic.

    The 2123H will beam tightly above 2500 hertz and cone...
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    Absolutely The whole job is only as good as...

    Absolutely

    The whole job is only as good as your drivers so itís worth getting them right.
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    Good plan

    Good plan
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    You need a reasonable signal voltage which l...

    You need a reasonable signal voltage which l donít recall off hand and sweep oscillator and a power amp. Ideally an oscilloscope to evaluate the sine wave. Also ear muffs.

    One slip of the screw...
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    If you have no experience then get a professional...

    If you have no experience then get a professional technician to do it like our Edgewound at Upland loudspeaker repairs. It’s not as simple as it might seem and to do the job properly requires...
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    Greg Timbers holds Quick Silver valve power...

    Greg Timbers holds Quick Silver valve power amplifiers in high regard for the horn in the Everest.

    Gregís system has continually evolved and is now quite complex. The sound is absolutely superb.
    ...
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    If you are referring to measured impedance YES...

    If you are referring to measured impedance YES and YES (referring to charge coupled I assume)

    The thing to understand is that a multi meter will only give you a dead or alive resistance which is...
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    Itís a first world problem with building these...

    Itís a first world problem with building these vintage systems.

    To explain the actual measured ac impedance of the nominal 16 ohm drivers is around 12 ohms.

    The dcr as l recall is around 6-7...
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    They are nice

    They are nice
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    Try Parts Express

    Try Parts Express
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    Yes. Particularly if searching for them in EBay....

    Yes. Particularly if searching for them in EBay. And you donít know what condition they are in.

    From Jammin Jersey they check everything and tell you if itís original diaphragms etc. l am saying...
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    No worries, I might ask you to return a favour...

    No worries,

    I might ask you to return a favour at some point.
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    An update. In view of the current...

    An update.

    In view of the current circumstances this is going to take a bit longer than expected to get to market so bare with us.

    Some progress. l just signed off on the industrial design by...
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    https://jamminjersey.com/detail/007490/jbl-2405h-c...

    https://jamminjersey.com/detail/007490/jbl-2405h-ceramic-magnet-slot-tweeters

    Click on the link and you can email Mark Leonard. I bought a large shipment recently and it was well organised.
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    Just be aware the Beyma slot has lower...

    Just be aware the Beyma slot has lower sensitivity than the 2405H.

    Try Jammin Jersey in Northridge CA
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    Depending on if itís sheets or Bats there can be...

    Depending on if itís sheets or Bats there can be the risk of air born particles.

    If you start splitting Bats for the right thickness then you will get inhaled particles.

    Inside the box l think...
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    Wear Tyvek or Kimberly Clark coveralls and a mask...

    Wear Tyvek or Kimberly Clark coveralls and a mask during installation.
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    I still have the Zilch cloth in a package. I...

    I still have the Zilch cloth in a package.

    I must make some new grills..........
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    Interesting. The 2123H with an updated mid...

    Interesting.

    The 2123H with an updated mid crossover filter is a very good alternative.
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    Awesome

    Awesome
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    Loaded question...LOL. Well there are several...

    Loaded question...LOL.

    Well there are several ways of describing the differences.

    Lets look at the first question.

    The 4343 has an over arching live presentation. That to my mind comes...
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    That network is specific to the drivers in that...

    That network is specific to the drivers in
    that system.

    You can plug play but it won't deliver anywhere near the potential of a correctly optimised system.

    To me it’s the difference of a wall...
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