What do I need to know about subwoofer crossover settings?
Emily Sparks
Published Mar 27, 2026
What do I need to know about subwoofer crossover settings?
Here are some essentials that you need to know about subwoofer crossover settings: LFE or Low-Frequency Effect is the part of your sound system that produces deep sounds when listening to music or heart-pounding effects when watching movies. It’s the “.1” in a 3.1, 5.1 or 7.1 surround sound setup.
Why is crossover important in car audio system?
Crossover selection is the first step in building a custom stereo system or any kind of sound system that you want to sound better. When you are looking to improve the sound of your car audio system, you will have to understand the importance of selecting the right components. One of the most important parts of a car audio system is the crossover.
What kind of crossover do you need for home theater?
For most home theater systems, you will need to consider a passive crossover. A passive crossover splits the frequencies that each speaker can handle. For instance, you will likely use four different speaker sizes for surround sound. Each of these speakers will play a portion of the frequency spectrum.
How many crossovers are there in a loudspeaker?
Traditional filter theory deals with -3dB points where power is cut in half. However, since we are dealing with actual sound pressure (SPL) and not sound power, loudspeaker engineers typically deal with -6dB points when working with crossover networks. Think of a tweeter trying to produce bass frequencies.
What makes a crossover sound with a subwoofer?
Small speakers are the ones that create the mix for crossover. It can produce sounds at frequencies lower than your main speakers but higher than your subwoofer. It’s mostly responsible for the transition that happens when your system gets into the crossover. So now, what’s a subwoofer crossover?
How do you set crossover frequency for speakers?
Manufacturer recommendations also change over time, and the numbers will vary from system to system. The crossover point, or crossover frequency, is the place where power is passed from one speaker driver into another. On a typical passive crossover, you can simply adjust the crossover frequency to match your final speaker combination.
For most home theater systems, you will need to consider a passive crossover. A passive crossover splits the frequencies that each speaker can handle. For instance, you will likely use four different speaker sizes for surround sound. Each of these speakers will play a portion of the frequency spectrum.
Traditional filter theory deals with -3dB points where power is cut in half. However, since we are dealing with actual sound pressure (SPL) and not sound power, loudspeaker engineers typically deal with -6dB points when working with crossover networks. Think of a tweeter trying to produce bass frequencies.