The crossover frequency is one of the most important settings on a subwoofer system. It determines the point at which the subwoofer takes over from the main speakers in reproducing the lower frequencies. The two most common crossover frequencies are 80Hz and 90Hz.
But what is the difference between the two, and which one is better?
80Hz Crossover
Setting the crossover frequency to 80Hz means that the subwoofer will handle all frequencies below 80Hz, while the main speakers will handle all frequencies above 80Hz. This is the standard crossover frequency recommended by THX, and it is a good starting point for most systems.
An 80Hz crossover has a number of advantages. First, it allows the main speakers to focus on reproducing the midrange and treble frequencies, which they are better suited for. Second, it helps to reduce the amount of bass that is reflected off the walls and ceiling, which can improve the overall sound quality. Third, it makes it more difficult to localize the sound of the bass, which can create a more immersive listening experience.
However, there are also some potential downsides to using an 80Hz crossover. First, it can make the bass sound less impactful, especially in smaller rooms. Second, it can make it more difficult for smaller speakers to reproduce the lower frequencies, which can lead to distortion.
90Hz Crossover
Setting the crossover frequency to 90Hz means that the subwoofer will handle all frequencies below 90Hz, while the main speakers will handle all frequencies above 90Hz. This is a good choice for systems with larger main speakers, as it allows them to reproduce a wider range of frequencies without distortion. It can also be a good choice for rooms with good acoustics, as it allows the subwoofer to produce a more even and balanced bass response.
A 90Hz crossover has a number of advantages. First, it allows the subwoofer to reproduce more of the lower frequencies, which can result in a more impactful and visceral bass response. Second, it can help to reduce the amount of stress on the main speakers, especially when reproducing loud volumes. Third, it can make it easier to localize the sound of the bass, which can be beneficial for certain types of music and movies.
However, there are also some potential downsides to using a 90Hz crossover. First, it can make the bass sound too boomy or muddy, especially in smaller rooms. Second, it can make it more difficult for smaller speakers to reproduce the midrange frequencies, which can lead to a less balanced soundstage. Third, it can make the sound of the bass more directional, which can detract from the overall immersion of the listening experience.
Which Crossover Frequency Should You Use?
The best crossover frequency for your system will depend on a number of factors, including the size and type of your speakers, the size and acoustics of your room, and your personal preferences.
If you have small speakers, you may want to stick with an 80Hz crossover. This will help to prevent the speakers from distorting and ensure that the bass is evenly distributed throughout the room.
If you have larger speakers, you may want to try a 90Hz crossover. This will allow the subwoofer to reproduce more of the lower frequencies, which can result in a more impactful and visceral bass response. However, be sure to listen carefully to your system to make sure that the bass is not too boomy or muddy.
Ultimately, the best way to determine the best crossover frequency for your system is to experiment. Try different settings and see what sounds best to you. You may also want to consult the manufacturer’s instructions for your speakers and subwoofer for recommendations.
Additional Tips
Here are some additional tips for choosing the right crossover frequency:
- If you are using a subwoofer with a built-in crossover, consult the manufacturer’s instructions for recommendations.
- If you are using a receiver or preamplifier with a crossover control, you can use the auto EQ feature to set the crossover frequency automatically.
- If you are unsure of the best crossover frequency for your system, you can ask a professional audio installer for help.
There is no one-size-fits-all answer to the question of whether to use an 80Hz or 90Hz crossover frequency. The best setting will depend on your individual system and preferences. However, by understanding the pros and cons of each setting, you can make a more informed decision about which crossover frequency to use.
