What does crossover mean on a subwoofer?
Daniel Foster
Published Mar 18, 2026
What does crossover mean on a subwoofer?
Crossover is the frequency where speakers begin to roll off, and the subwoofer starts outputting bass notes and LFEs. Set the crossover point 10 Hz higher than the low end of your speaker’s tolerance range. If you don’t know the frequency range of your speaker, use a subwoofer matching tool.
What should crossover be set at?
For main speakers: the recommended crossover frequency is 56-60 Hz (high pass). At this frequency, low-end bass, which can cause distortion, is filtered out. This crossover is the perfect middle ground between midrange bass capability and full-range sounds.
Is 40 Hz low enough?
Many say that they can live without subs, but most full range speakers typically go down to 40hz.
What should I set my LPF and HPF to?
Recommended Starting Points: Tweeters – High-Pass Filter = 5,000 Hz (12 db or 24 db Slope) Midrange – Band-Pass Filter = 80 Hz HPF & 5,000 Hz LPF (12 db or 24 db Slope)
Where do you put the crossover on a subwoofer?
When you connect your sub to an amp speaker post, you can set the subwoofer crossover below, close, or above your speaker ratings. Many people get overwhelmed with this process because when you look at the back of large speakers, you’ll see several control knobs that you can use to configure the crossover.
When to use a low pass crossover speaker?
If your center speaker can produce 80Hz to 120Hz, then you want your low-pass crossover to be anywhere close to 90Hz. This configuration means that both your center speaker and subwoofer will produce output once audio reaches 90Hz.
Can a subwoofer overlap with a small speaker?
As a general rule, you want your large, small, and main speakers to overlap. However, you can’t just go at the back of your sub to configure because it needs to have the right amount of overlap. Your audio will create a peak in transition if you set it with too much overlap; too little creates depth or discontinuity in harmony.
Is there a formula for setting a subwoofer?
Unfortunately, there’s no exact formula to set your subwoofer, and you’ll have to do most of it by ear. As a general rule, you want your large, small, and main speakers to overlap. However, you can’t just go at the back of your sub to configure because it needs to have the right amount of overlap.
When you connect your sub to an amp speaker post, you can set the subwoofer crossover below, close, or above your speaker ratings. Many people get overwhelmed with this process because when you look at the back of large speakers, you’ll see several control knobs that you can use to configure the crossover.
As a general rule, you want your large, small, and main speakers to overlap. However, you can’t just go at the back of your sub to configure because it needs to have the right amount of overlap. Your audio will create a peak in transition if you set it with too much overlap; too little creates depth or discontinuity in harmony.
If your center speaker can produce 80Hz to 120Hz, then you want your low-pass crossover to be anywhere close to 90Hz. This configuration means that both your center speaker and subwoofer will produce output once audio reaches 90Hz.
Unfortunately, there’s no exact formula to set your subwoofer, and you’ll have to do most of it by ear. As a general rule, you want your large, small, and main speakers to overlap. However, you can’t just go at the back of your sub to configure because it needs to have the right amount of overlap.