How Do Capacitors Filter Frequencies For Tweeters?
Capacitors are commonly used in audio systems to filter out unwanted frequencies for tweeters. Tweeters are high-frequency drivers that reproduce high-pitched sounds, typically above 2,000 Hz.
Interestingly, they are not commonly referred to as capacitors when we use them for tweeters, we actually call them “Bass Blockers”.
Capacitors are passive components that can store electrical charge and release it over time. When a capacitor is connected in series with a speaker, it creates a high-pass filter that allows high-frequency signals to pass through to the speaker while blocking lower frequencies.
In a tweeter circuit, a capacitor is placed in series with the tweeter driver. The value of the capacitor determines the cutoff frequency of the filter. The cutoff frequency is the point at which the filter starts to attenuate or reduce the level of the signal. For example, if a 4 microfarad capacitor is used in a tweeter circuit, the cutoff frequency would be around 4,000 Hz.
By using a capacitor in this way, the high-frequency signals that the tweeter is designed to reproduce can pass through to the tweeter, while lower frequencies that may cause distortion or damage to the tweeter are filtered out. This helps to ensure that the tweeter operates within its designed frequency range and produces clear undistorted sound.
