I have an old set of old speakers and I was checking out the crossover. Simpler than I expected with only a 2uf cap on the tweeter.
What exactly is the purpose of putting a resistor in series with the capacitor. Does it reduce the power to the tweeter or does it affect the signal somewhere else in the band?
What exactly is the purpose of putting a resistor in series with the capacitor. Does it reduce the power to the tweeter or does it affect the signal somewhere else in the band?
It does reduce the power to the tweeter as Cal says, but it can also effect the frequency that the capacitor acts as a crossover. This is because adding a resistor in series with the tweeter adds to the effective impedance of the tweeter. (An 4 ohm resister in series with an 8 ohm tweeter makes the combination 12 ohm, which is what the capacitor "sees") This alters the crossover frequency.
Yes, and yes. Because of the complexity of real impedances, it will not attenuate evenly versus frequency and power level.
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