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Thread: Altec Crossover Upgrades?

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    Senior Member gmarascortt's Avatar
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    Altec Crossover Upgrades?

    Hello......I have several sets of Altec 920-8A full range duplex drivers, 12 inch, 8 ohms, 150 watts. Originally from the early 80's, these were primarily used as secondary or back-up applications in theaters, lobbys, concert halls, hotels, etc... They were installed in ceilings, columns, and in walls.
    I would like to use these in custom built stage monitors, about 3 cubic feet of internal volume. These will be braced and ported.
    What can I do to these simple crossovers to get the best sound possible? Capacitor brands, types, and ratings? New coils? Wiring? Can I make any other changes?
    Any and all advice will help. Thank you in advance!

    Name:  Altec Lansing 920-8A Duplex Crossover.jpg
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    JBL:250Ti,18Ti,L77,L96,L112,L36,4412,L80T,Custom3-way
    Altec:604E,1204B,1211A,1231A,920-8B,9849-8B,511Towers

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