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Thread: 2440 horns with 2308 throats

  1. #1
    Junior Member tyler477's Avatar
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    2440 horns with 2308 throats

    I got these today on a whim, I guess they need diaphragms, I looked at them and they seem alright here's a picture; no cracks or holes;
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  2. #2
    Senior Member grumpy's Avatar
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    at least one dia... might figure out what to do with them before sinking
    cash into a new pair ( could go 8-16 ohm nominal, 2440 or 2441 diaphagms,
    etc... depends on what you'd use them for/with).

  3. #3
    Senior Member edgewound's Avatar
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    Both diaphragms show big-time stress/metal fatigue....even though they still "work". Just a caveat.

    The best, most cost effective choice for JBL replacement diaphragms would be the aquaplas coated D8R2450SL, D8R2452SL($200) or D16R2451SL($198)

    Aluminum D16R2440 is $240, D16R2441 is $272. Not as durable as the ti/aquaplas units.

    If you're after authenticity, by all means go for the the original spec. If you want better value/performance get the newer units.
    Edgewound...JBL Pro Authorized...since 1988
    Upland Loudspeaker Service, Upland, CA

  4. #4
    Junior Member tyler477's Avatar
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    what about the ebay diaphragms? titanium I believe? Stay away? what are peoples opinions? I did the aa battery scratch test and there is no sound from either horn
    Getting a multimeter later today

  5. #5
    Senior Member edgewound's Avatar
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    Quote Originally Posted by tyler477 View Post
    what about the ebay diaphragms? titanium I believe? Stay away? what are peoples opinions? I did the aa battery scratch test and there is no sound from either horn
    Getting a multimeter later today
    Sounds like both are blown. The lower picture looks blown by the looks of the suspension.

    Aftermarket diaphragms are only better in one regard....a lower price.

    If you want JBL performance, you need JBL parts.
    Edgewound...JBL Pro Authorized...since 1988
    Upland Loudspeaker Service, Upland, CA

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