Subwoofer Crossover Calculator


Calculating the crossover frequency for a subwoofer is crucial for achieving optimal audio performance in a sound system. Whether you’re an audio enthusiast or a professional sound engineer, having a reliable calculator can streamline the process and ensure accurate results.

How to Use

Using the subwoofer crossover calculator is simple. Enter the required parameters such as speaker impedance, crossover frequency, and desired filter type into the provided input fields. Then, click the “Calculate” button to get the precise crossover frequency for your setup.


The formula for calculating the crossover frequency fc​ is:


  • R is the total impedance of the speaker system (in ohms).
  • C is the value of the crossover capacitor (in farads).

Example Solve

Suppose you have a subwoofer system with a total impedance of 4 ohms and you want to use a 100 microfarad capacitor. Let’s calculate the crossover frequency:


So, the crossover frequency for this example is approximately 398.942 Hz.


Q: What is a crossover frequency?
A: The crossover frequency is the point at which the signal is divided between the subwoofer and other speakers in a sound system.

Q: Why is it important to calculate the crossover frequency accurately?
A: Accurate crossover frequency ensures proper distribution of frequencies to different speakers, optimizing sound quality and preventing damage to equipment.

Q: Can this calculator be used for different speaker configurations?
A: Yes, this calculator can be used for various speaker configurations as long as the impedance and capacitor values are known.


A subwoofer crossover calculator is an invaluable tool for anyone involved in audio setup and tuning. By providing accurate crossover frequency calculations, it helps optimize sound quality and ensures the efficient distribution of frequencies to different speakers in a system.

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