An inductor in series with a driver acts as a 1st order low pass filter. Add a capacitor in parallel (of the right value) and it becomes a 2nd order lp filter.
What, if anything, is the effect of having only the capacitor in parallel?
What, if anything, is the effect of having only the capacitor in parallel?
Not only is JMF correct, without the voltage divider added closer to the input, the cap won't do anything audibly except short the amplifier.
Now, if this is used in a series xover, and the drivers have tied terminals, then it is likely the capacitor that does the highpass for the tweeter, but is connected across the woofer.
Later,
Wolf
Now, if this is used in a series xover, and the drivers have tied terminals, then it is likely the capacitor that does the highpass for the tweeter, but is connected across the woofer.
Later,
Wolf
The capacitor has a reactance (impedance, or sort of resistance) that falls with frequency. However the ideal amplifier is a very low impedance voltage source, at least to a point. So as the impedance of the capacitor falls with rising frequency, the amplifier simply supplies more current to maintain its idealised voltage output level, to the point that it starts to current limit. All in all, that's not a desirable scenario.