How To Make a Sealed Box Louder: Upgrade Your Amplifier

Sealed subwoofer boxes conveniently incorporate all of the components in one enclosure. With their entirely closed architecture, these devices can efficiently produce clear and powerful bass, particularly in automobile audio systems.

There are various ways to make a sealed box louder, but the most effective way is to boost the power delivered by the amplifier. This will allow greater bass frequencies to be produced through the speakers. Alternatively, altering the sub-location is a straightforward approach to enhance the box’s volume.

There are many benefits to employing a sealed box subwoofer. Most notably, they tend to create better-sounding bass than their ported counterparts while being enclosed makes them naturally quieter.

In this post, you’ll learn the most effective techniques to make a sealed box louder so you can enjoy greater volume from your subwoofer without compromising on sound quality.


1  Upgrade Your Amplifier

One of the most effective methods to make a sealed subwoofer box louder is by ensuring that the amplifier you combine it with is compatible and powerful enough. If the sub and amp are not a good match, you will notice decreased overall volume.

Check the specifications of your sealed box to find how many ohms it is rated at and how much power (watts RMS) it can withstand. Once you get these values, you then need to ensure that it fits the amp’s capabilities.

Amplifiers are rated in terms of watts RMS into a specified amount of ohms, so it is easy to determine whether they match up with the specs of your sealed box.

There’s a frequent fallacy that a more powerful amplifier automatically promises higher volume from a sub when in fact, it’s more necessary to ensure they’re well matched. Otherwise, the additional power will be rendered useless.

Upgrading your amplifier to one suitable to your sealed box’s specs is a simple and practical approach to boost your decent system’s volume and sound quality.

2  Switch The Position

If you’re familiar with the basic idea of acoustics, you’ll know that the position of any speaker drastically affects the way it sounds. This comprises its tone, dominant frequencies, and loudness.

Placing your sealed box in a position where the inbuilt subwoofer speakers are aimed straight at a surface is going to result in the vibrations being deflected or, even worse, muffled.

This may make the volume sound lower since less of the bass reaches your ears before it is bounced off the various surfaces in your car or in your home audio setup.

To figure out the ideal position for the sealed box, you should choose an appropriate listening point in the room or automobile, then play the same music at the same volume through the sealed box speaker and check its loudness.

If it appears louder in a given spot, this is usually the ideal acoustic position for the sealed box to be preserved.

3  Adjust EQ Settings

If your sound system has onboard equalization, as it more than likely will, you can alter these settings to boost the prominence of specific frequencies produced by the sealed box.

EQ can be utilized in two main ways – adaptive or reductive. The former includes making some frequency bands louder, while the latter involves decreasing specific frequencies to make others stand out more clearly.

A sealed box most typically contains a subwoofer; therefore, you might find that decreasing some of the upper midrange and high-end frequencies of your sound system allows the bass frequencies produced by the sub to be more audible.

EQ won’t make your sealed box noticeably louder, but it can enable you to create greater separation between the frequency bands, which may improve the purity of the sound.

A more accurate sound typically results in the perception of it being louder, as your ears can focus on the individual sounds more easily.

4 Use Polyfill

Although I’m aware that this may sound like a bizarre proposal, one of the most effective ways to raise the loudness of a sealed box is by filling it with a material known as polyfill.

Polyfill is also known as wadding, it is a soft synthetic fabric that is often used to stuff pillows, duvets, as well as for acoustic purposes.

A reasonably inexpensive material, a polyfill is derived from polyester. It can be effective in making your sealed box louder because it can cause the vibrations within the enclosure to slow down, resulting in them sounding clearer and more pronounced.

If the sound frequencies are free to bounce about inside the sealed box, this could be why you’re unable to hear them. Bass traps and issue frequencies may occur, canceling one another out.

By filling the sealed box with polyfill, you assure that the vibrations will be absorbed, which results in minimal distortion and improved separation between the various frequency bands.

Acoustic treatment is often used not only to prevent noises from leaving a place but also to improve clarity within a space.

Therefore, a polyfill is a wonderful option for making your sealed box sound better, clearer, and ideally louder.

5 Switch to a Bandpass Enclosure

If you’ve tried all the above approaches and you still find that your sealed box seems too quiet, then it might be worth considering moving to another form of subwoofer box. The three varieties you can choose from are:

Of the three, sealed boxes are often regarded as the quietest. They do, however, provide a tighter bass sound which is why they are popular.

Vented boxes can sound boomy, notably if they’re used in a tight room. Therefore, I’d recommend considering switching to a bandpass box if you want to increase your volume greatly without compromising on tone and sound quality.

A bandpass enclosure differs from a sealed box in that it has two independent portions. The first section is vented, while the second section is sealed.

This gives them a good halfway ground between the tighter sound of a closed box and the more open, louder sound of a vented box. You feel an increase in volume while preserving some of the definition that a closed box delivers.

There are several terrific bandpass subwoofer boxes to pick from, like this amazing option from JBL.

Related Questions

How Do You Increase Bass in a Sealed Box?

Filling a box with an absorbent material like polyfill is the best technique to improve the bass output of a sealed box. The bass will be more defined and clear when this is applied to absorb any offending frequencies.

Can a Sealed Subwoofer Handle More Power?

Subwoofer box sealing does not affect the box’s power management. The power handling capacity of a subwoofer enclosure can be increased by pairing it with an appropriate amplifier.

Does The Size of a Sealed Box Matter?

The volume of sound within a closed box is proportional to its size. Playing audio via a bigger box will result in a louder volume since there will be more room for the vibrations to resonate and reflect. Reduced volume and increased tightness are the results when using smaller containers. For more updates, you can visit TheActiveNews.Com.

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