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Thread: ( Horn ) - Enclosure for 904 8A Super Duplex?

  1. #1
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    ( Horn ) - Enclosure for 904 8A Super Duplex?

    Good morning

    My Name is Michael from germany and iīm seraching for the perfect enclosure
    for the 904 8A`s. Itīs very difficult to find anything in the web about it.
    When i see the Thiele small parameters from this drivers it would be the best to create a horn enclosure. Bassrefelex wouldnīt work well in my opinion.

    Iīm not shure but some time ago i saw an 604 / 904 driver in a VOTT?
    Is this a possible solution and if so, wich VOTT type would be the best?

    A german manufacturer builts a horn cabinet for the actual 604 8L driver.
    See here:
    http://www.musicconnection.de/pdf/Imperial.pdf

    Many questions but i hope somebody can help me.

    Have a nice day,
    Michael

  2. #2
    Member sajt's Avatar
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    A german manufacturer builts a horn cabinet for the actual 604 8L driver.
    See here:
    http://www.musicconnection.de/pdf/Imperial.pdf

    this is nit a horn cabinet! this is maybe the Altec 620 cabinet.
    in teh ebay.de there are a horn cabinet for you, so you are lucky guy

  3. #3
    Senior Member CONVERGENCE's Avatar
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    Hi,

    Concerning the Altec Duplex. One of the early original A6 cabinet had a front loaded Duplex speaker. This was discussed in a previous thread.

    There are two types of Altec duplex today the DTS with it's elongated horn is placed in a front loaded horn.

    The original Duplex and true Hi Fi can be mounted for monitors, duct ported etc....

    Enclosure size parameters (cubic FEEt ) Based on 604-8g

    A Infinite baffle >4.5
    B Ducted port Bass reflex <6.0
    c Regular port Bass reflex >6.0
    D Infinite Baffle <12.0

    Recommended optimum 9.0

    .................................................. ............................

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