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Thread: Help identifying this horn - bolted to 2470

  1. #1
    Member Mazza's Avatar
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    Jan 2019
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    Help identifying this horn - bolted to 2470

    Dear all,
    I have these horns and am hoping for some help identifying them.....

    Name:  JBL Horn front.jpg
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Size:  21.1 KBName:  JBL Horn.jpg
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    Many thanks for any assistance!

  2. #2
    Senior Member
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    Apr 2003
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    GTA, Ont.
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    5,109
    Hi Mazza,

    Your horn looks to be an RCF H9041.

    Old RCF Catalogue pdf. See page 28.

    H9041 spec sheet, pdf

    I know the H9041 well since I use it in a custom designed front-fill ( or delay ) box ( using a 2123-10" midwoof mated with a 2425h-H9041 combo above ) .
    - It's best crossed over above 1.6K ( IME ) due to the small mouth area of the horn introducing significant ripple ( a hole ) below that point .



    PS; ( since I know that you like to build things ) here's an ancient near-field response trace made more than a decade back;

    Name:  K101_Study.jpg
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  3. #3
    Member Mazza's Avatar
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    Australia
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    All hail EarlK!

    Hi EarlK,
    Again, many, many thanks for sharing your apparently bottomless well of knowledge, experience and wisdom!




    BTW, the 2470's are for my 4331 restoration. Been slowly gathering parts, still looking for the original 2312 horn.

    Now what to do with the RCA H9041's????

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