Add a car subwoofer with a sealed box

Add a car subwoofer with a sealed box:

Car subwoofers are a crucial component of any car audio system, providing deep, resonant bass that enhances the listening experience. However, the type of subwoofer enclosure you choose can have a significant impact on the sound quality produced. One option is a sealed box, which provides tight and accurate bass. In this article, we will explore the benefits of adding a sealed box subwoofer to your car audio system.

Sealed Box Subwoofers

Sealed box subwoofers are enclosed in a sealed box or enclosure, which is airtight. The box is typically made of MDF (medium-density fiberboard) and is designed to be the correct size for the specific subwoofer. The sealed box creates a tighter sound, allowing for more accurate and controlled bass response. You can always add a car subwoofer with a sealed box if you do not want to compromise on sound quality.

Benefits of Sealed Box Subwoofers

There are several benefits to using a sealed box subwoofer, including:

Accuracy: Sealed box subwoofers are designed to produce accurate, tight bass that is free from distortion. The airtight enclosure ensures that the sound waves from the subwoofer do not interact with the surrounding air, resulting in a cleaner and more precise sound.

Power handling: Sealed box subwoofers typically have a higher power handling capacity than ported or bandpass subwoofers. This is because the sealed box design provides a more controlled environment for the subwoofer to operate in, allowing it to handle more power without distortion.

Compact size: Sealed box subwoofers are typically smaller in size than other types of enclosures. This makes them a great option for those who want to add a subwoofer to their car audio system but have limited space.

Choosing the Right Sealed Box Subwoofer

When choosing a sealed box subwoofer, there are several factors to consider:


The size of the subwoofer and the box should be appropriate for the available space in your car. A larger subwoofer will typically produce more bass, but it may not fit in a smaller car.

Power handling:

Choose a subwoofer with a power handling capacity that matches your amplifier. If your amplifier can deliver 500 watts RMS, for example, choose a subwoofer that can handle at least 500 watts RMS.


Subwoofer sensitivity is a measure of how much sound it produces when given a specific amount of power. A higher sensitivity subwoofer will produce more sound with less power.

Frequency response:

Choose a subwoofer with a frequency response that matches your listening preferences. If you listen to a lot of bass-heavy music, choose a subwoofer with a lower frequency response.

Installing a Sealed Box Subwoofer

Installing a sealed box subwoofer is a relatively straightforward process, but it does require some basic knowledge of car audio systems. Here are the steps to follow:

Choose a location:

Determine where you want to install the subwoofer in your car. Common locations include the trunk, the rear deck, or under a seat.

Build the enclosure:

Build or purchase an enclosure that is the correct size for your subwoofer. The enclosure should be airtight and made of MDF.

Wire the subwoofer:

Follow the manufacturer’s instructions for wiring the subwoofer to your amplifier. Make sure the wires are securely connected and that the polarity is correct.

Mount the subwoofer:

Mount the subwoofer to the enclosure using screws or bolts. Make sure it is secure and does not rattle.

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