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Crossover resistors

Discussion in 'Electronic Repair' started by DanFXR, Jan 30, 2007.

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  1. DanFXR

    DanFXR Guest

    After a speaker cabinet went out on me I took it apart and tested each
    speaker , 3inch,4inch and a 15 inch.
    All seemed fine.
    I replaced the 2 caps (1.5 and a 6) and the resistors (5w 2.2 Ohm) .These
    are the same values as the old ones.
    Almost no sound was making its way to to the 3 or 4 inch. speakers. I
    removed the resistors and it sounds as good as it used to.
    My question is what funtion does the resistor play?
    Does it protect the speakers from overload?
  2. CJT

    CJT Guest

    Presumably they contribute to the crossover's frequency domain
    performance -- e.g. its Q.
  3. Meat Plow

    Meat Plow Guest

    Works with the inductor and capacitor to determine what frequencies are
    passed to the drivers. What frequencies that are blocked from the drivers
    end up as heat dissipated by the inductor and resistor.
  4. GregS

    GregS Guest

    Resistors mainly control the amplitude to adjust drivers outputs. Very few
    drivers have the same sensitivity. The resistors also can increase power
    handling, have effects on crossover frequency and phase, and can change
    damping. Off axis response will change and response will change. Somehow your
    not going to get the same response by bypassing the resistors. Changibg
    capacitor types will also change things.

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