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Thread: ALtec 870B modifications

  1. 01-06-2008, 05:50 AM #1
    MartinV56
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    ALtec 870B modifications

    Hi People, I am making some changes to my altec 870B system, added tweeter piezo electric Motorola KSN 1005, with a resistor of 8 ohms/5watts and a capacitor 2MF/250v in the piezo. The system is currently composed of:
    the worksheet range is

    Enclousure Cabin: 861B
    Altec 420y: 25-14KHz
    Tweeter EV T-35: 3.5K- 18K
    1005 piezo tweeter: 4-27K
    Crossover EV CR 35 3500HZ

    Taking into account such status would be the appropriate court of piezo electric use for which few capacitors, 2MF, 1,5MF or less, thanks
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    Diy amps: 2A3,300B,45,71A
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