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Thread: Improve the ultra high frequency of 4430

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    Member 4344's Avatar
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    Improve the ultra high frequency of 4430

    Hi,

    I plan to place a super horn tweeter on top of 4430 toimprove its performance in ultra high frequency, will it works? Probably look for Fostex ultra horn tweeter unitsas 045be is too expensive and hard to find in Ebay.

    Any advice?

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    improve 4430.

    Try to find a used JBL 077 tweeter. A great tweeter. In my opinion, better than any Fostex tweeter.-RUDY

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    Senior Member ivica's Avatar
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    Quote Originally Posted by 4344 View Post
    Hi,

    I plan to place a super horn tweeter on top of 4430 toimprove its performance in ultra high frequency, will it works? Probably look for Fostex ultra horn tweeter unitsas 045be is too expensive and hard to find in Ebay.

    Any advice?
    Hi 4344,

    If You can find JBL 077 (blue diaphragm) in good condition that would be very, very good solution, but proper network work has to be done too.
    regards
    ivica

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    Senior Member SEAWOLF97's Avatar
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    I've used a pair of these on a speaker pair that were down on highs

    http://diyaudioprojects.com/Drivers/40-1310/40-1310.htm

    They are Fostex and sold under the Radio Shack name. Easy to
    vampire in , and require no crossover change. Not too expensive
    on the net.
    I'm getting tired of Winning ....

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    Senior Member ivica's Avatar
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    Quote Originally Posted by SEAWOLF97 View Post
    I've used a pair of these on a speaker pair that were down on highs

    http://diyaudioprojects.com/Drivers/40-1310/40-1310.htm

    They are Fostex and sold under the Radio Shack name. Easy to
    vampire in , and require no crossover change. Not too expensive
    on the net.
    Hi SEAWOLF97,

    It is nice that You enjoy listening mentioned speakers, but I can guess that they are 'bemay', and have no idea how they 'cooperate' with the system drivers.

    regards
    ivica

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    Senior Member SEAWOLF97's Avatar
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    Quote Originally Posted by ivica View Post
    Hi SEAWOLF97,

    It is nice that You enjoy listening mentioned speakers, but I can guess that they are 'bemay', and have no idea how they 'cooperate' with the system drivers.

    regards
    ivica
    I used them on a 1 way Walsh driver and did not find them beamy at all.
    Fostex has a very good rep.

    over the long life of those "super tweeters", they were produced in various countries. I'd look for the Japan ones if going that route.

    http://diyaudioprojects.com/Drivers/T90A/
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    Quote Originally Posted by ivica View Post
    Hi 4344,

    If You can find JBL 077 (blue diaphragm) in good condition that would be very, very good solution, but proper network work has to be done too.
    regards
    ivica
    +1.

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    I would agree that if adding a tweeter, it would be desirable to roll off the high end of horn and reduce its harshness.

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    Member 4344's Avatar
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    Thank you Gents!!

    Alright 077 & Fostex, will see, if I can find a nice pair...and a good network idea as well

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    Administrator Mr. Widget's Avatar
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    Here is someone's solution for the 4435:

    http://www.audioheritage.org/vbullet...05-s-in-a-4435


    Widget

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    Member 4344's Avatar
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    Quote Originally Posted by Mr. Widget View Post
    Here is someone's solution for the 4435:

    http://www.audioheritage.org/vbullet...05-s-in-a-4435


    Widget

    Thanks Widget, very informative indeed..

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    In the past I have used Tannoy ST-50 supertweeters on JBL S/2600 speakers. Currently using them on JBL S/3100 speakers in my office.
    Careful man, there's a beverage here!

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    Administrator Robh3606's Avatar
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    Just remember to check the polar plots on your add on tweeter and be prepared to be able to angle or tilt them towards the listening area. Probably nothing you can add will match the 2344 dispersion so the off axis is still going to be down relative to on axis. The 077 gets very beamy in the vertical axis and the 075 doesn't go high enough to matter and is way to beamy.

    Rob
    "I could be arguing in my spare time"

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    Quote Originally Posted by Robh3606 View Post
    Just remember to check the polar plots on your add on tweeter and be prepared to be able to angle or tilt them towards the listening area. Probably nothing you can add will match the 2344 dispersion so the off axis is still going to be down relative to on axis. The 077 gets very beamy in the vertical axis and the 075 doesn't go high enough to matter and is way to beamy.

    Rob

  15. #15
    Member 4344's Avatar
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    Thanks Rob and probably your are right....I also consult technical people of JBL and they told me 99% as you mentioned nothing you can / should add on top

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