LAST UPDATED: May 28, 2019
Best Subwoofer Boxes for Deep Bass: Bring Out Your Subwoofer’s Deepest Bass
Improve your subwoofer system with our top picks for the best subwoofer box design
The Review Team
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PUBLISHED ON May 28, 2019
If you have enough room in your vehicle, you should consider upgrading your subwoofer box to improve the quality of bass you receive. Though you could choose to go the DIY route and design the box yourself, we suggest that you go for an aftermarket design to get the best quality box with a design that improves the aesthetics of your vehicle. In the guide below, we have come up with a few options that are the best on the market.
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Benefits of Subwoofer Boxes
- Optimal subwoofer performance. A subwoofer typically produces sound from the back and front. Without an enclosure, the sound from the back of the speaker would cancel out the frequencies from the front of the speaker. A subwoofer enclosure contains the frequencies at the back of the speaker to create uniformity in sound.
- Prevent Overheating. Most subwoofer boxes leave enough room around the speaker for air to flow in and out freely. That helps in cooling the subwoofer speakers to prevent overheating and damage to critical components, especially when you are playing loud music.
- Good aesthetics. Most manufacturers design subwoofers boxes with carpeted exteriors that match most vehicle interiors. The enclosed subwoofers make your car look classy, especially when placed in your trunk.
Types of Subwoofer Boxes
Sealed enclosures have a compact design with only one opening where the speaker's head rests upon. Air doesn’t get in or out of the box and such a design fits in almost all vehicles. You will get a precise, clean sound from the speaker and enclosure setup, but you would need more power to play higher volumes.
Ported or vented boxes reinforce low bass response. They give a more forceful bass than sealed boxes, regardless of the amplifier wattage. Ported boxes also improve airflow to the subwoofers to prevent overheating especially when playing music for longer periods of time. They are suitable for playing heavy metal and similar types of music when driving.
A bandpass enclosure is a variation of ported boxes. The only difference is that they deliver a louder sound that’s within a narrow frequency range. It’s typically a dual subwoofer, where one chamber is open and the other side is enclosed. Though not all subwoofer speakers work well with bandpass boxes, they have a better bass boom and are suitable for aggressive sounds like reggae, rap, and hard rock.
Free-Air Subwoofer Boxes
Free-air enclosures entail a woofer mounted on a board and then attached to the rear deck or a trunk against the rear seat. The trunk, in that case, would act as the enclosure, isolating the low frequencies from the back of the vehicle. This eliminates the problem of distorted sound from subwoofers without an enclosure. These types of boxes are convenient to install but only work with subwoofers designed for free-air use.
Altrend is a U.S.-based company that provides top-notch audio products. It has its worldwide hub in Delhi, India and is headquartered in Chicago, Ill. The company manufactures 259 unique enclosure models and is a renowned distributor of Banda Audio amplifiers. Some of its deep bass subwoofer enclosures are the Bbox E12DSV Dual 12” Shared Vented Carpeted Subwoofer Enclosure and Bbox E12ST Single 12” Truck Subwoofer.
America Sound Connect
America Sound Connect is a U.S.-based enclosure manufacturing company. It stocks more than 10,000 cool subwoofer box designs and also produces OEM radios and accessories like terminal cups, trim rings, subwoofer grilles, and wire ends. Some of its best-ported box designs are the ASC Dual 8” Subwoofer Universal Vented Port Sub Box andASC Single 8” Subwoofer.
Pioneer is a well-known manufacturer of car audio equipment. Nozomu Matsumoto founded the company in 1938, and it’s headquartered in Tokyo, Japan. The company has more than 70 years of experience in the industry, and most of its enclosures come preloaded with a subwoofer. However, if you are looking for an empty sub box, try the Pioneer UD-SW250D.
Subwoofer Box Pricing
- Under $50: This is the price range for most single-subwoofer enclosures. They hold the same typical features of a carpeted exterior, air-tight walls, and subwoofer wiring. You may also get a few dual-subwoofer enclosures.
- Above $50: Enclosures around this budget often have the best bass capabilities. Most are made from high-quality hardwood like MDF and have a quality carpet protecting the enclosure. Some brands sell their subwoofers alongside with their enclosures, and you could buy both if you need the entire music system upgrade.
Sealed boxes are the best for small to medium vehicles with little space in the car. It’s also more economical to go for a sealed box if you only have a single subwoofer speaker. Consider going for a ported or a bandpass box if you are an audiophile who loves playing loud music during long car rides.
Enclosure size largely depends on the number of woofers you have. Dual enclosures, as the name suggests, can contain two speakers. You’ll need to choose a design that matches the size of your speakers. For instance, a 12-inch dual box will work well with subwoofers ranging from 10 to 12 inches but would be too small for a pair of 15-inch subwoofers.
- Aesthetics: The enclosure should complement the interior of your vehicle. Most manufacturers make their enclosures with an outer carpeted layer or a slanted design that looks appealing when fitted into a car’s interior.
- Available Space: Take all the necessary measurements to determine if you have enough room in your vehicle for a new subwoofer box. The available space will also determine if you will go for a straight or wedge-shaped box.
Best Subwoofer Box for Deep Bass Reviews & Recommendations 2020
The Bbox E12DSV is one of the best speaker box designs for deep bass and designed to work with almost all modern subwoofers. The box is built from hardwood MDF coupled with true mitered corners. Between the two subwoofer holes, there’s a rectangular channel that cuts across the grain to ensure that the woofers fit perfectly when installed. The exterior is covered with a premium charcoal carpet to protect the hardwood from damage and to add a touch of elegance to your interior design.
The box walls are tightly held together with glue, and the shared chamber between the subwoofer holes makes it easy to connect wires to each woofer. Moreover, it has screw-down terminal cups for easy installation of the sub-speaker wires. The entire construction features 1-inch speaker baffles that limit sound interference from the front and back of the woofer to give you a distinct low frequency.
However, you may notice a rattling sound coming from the enclosure when you play music at loud volumes. Also, the glue holding the enclosure together has a bad odor, which you may find annoying. Lastly, the subwoofer is known to start falling apart from the back since there aren’t enough screws holding things together in the design.
For a reasonable price, these sealed speaker boxes from QPower make it easy to add new units to your vehicle’s sound system. They’re constructed out of MDF board, 3/4 of an inch thick, lined with a poly fiber covering, and glued at the seams and joints. One order includes two boxes.
Other than price, the big advantage of going with QPower’s angled boxes is that it’s easy to modify them. If you want sealed speakers, they’ll provide you with clear, unblemished sound. But if you want to increase your bass, it’s not at all hard to vent them.
The tradeoff comes with the quality of the construction. The wood is a little thin, and the glue might need to be reapplied if pieces start slipping. We’ve also noticed that the hole isn’t an ideal size for all speakers, and sometimes proves to be too large.
Gracing our list is an American Sound Connection subwoofer box that’s suitable for mid- to high-end woofers. It boasts a unique vent design, which improves airflow to the subwoofers. The design also improves the sound quality of the subwoofers by creating a harmonious flow of low-frequency waves. It enhances back speaker pressure to create the best bass output.
The box is made of ¾-inch MDF hardwood that is liquid nailed and then tightened with screws to create a sturdy structure. It’s a labyrinth-style port enclosure, meaning that you get one hole for each woofer. A high-quality carpet wraps around the enclosure with a total weight of 39.1 pounds. The back of the box features spring-loaded terminal cups to facilitate the best connection possible between the subwoofers and the amplifiers.
Its main drawback is that the carpet cover easily comes off with time, which may ruin your vehicle's interior design. Moreover, you may need to perform some maintenance to keep the subwoofer in good shape.
QPower’s dual enclosure is a premium-priced product, but well worth the money. If you want a box that will amp up the power of your biggest vehicle subwoofers, this is the choice for you. It installs easily, noticeably improves bass power over homemade boxes, and delivers windshield-cracking low notes.
We’ve also added points for the lining, which holds up extremely well over time, and for the high notes, which are as clear as the bass is bone-rattling. An extra note in this box’s favor is that it can wring more bass out of fewer speakers. A system with two subs is a lot easier to manage than one with four.
The QPower dual enclosure only loses points in a few areas. It’s really large, and takes up most of the trunk even in a luxury car. The construction can also be a problem: Some buyers report that it arrives with loose screws or broken corners that need to be replaced.
Another strong entry from Bbox, this dual enclosure has a unique design specifically engineered to fit in extended-cab pickups. While technically a vehicle-specific offering, the A152 fits a wide range of Chevy and GMC vehicles, and is versatile enough to fit in other makes of extended-cab trucks without making the back seat inaccessible.
In a time when some sub box buyers have just gotten used to cheap construction being the norm, the Bbox A152 blows those expectations out of the water, boasting durably sealed seams and a clean fit without any rattling. The sound is another pleasant surprise, clear and hard-hitting.
One downside with this box is, of course, the shape. While it fits in extended cabs, it’s a far less natural fit for sedans. It’s also unfortunate that the carpet covering doesn’t match the quality of the rest of the build—it isn’t always aligned correctly with the wood panels.
Have we mentioned yet that American Sound Connection builds great subwoofer enclosures? This solo box is a worthy addition to the line. It’s a simple, cheap box that fits just about anywhere, vented to produce the maximum possible bass per watt.
Along with maximizing bass, the design of this enclosure makes it a great fit for just about any vehicle amp, from modern Rockford Fosgates to ancient Sonys. It slams no matter where in your car you mount it, or what kind of car you mount it in.
The drawback is that its construction is a little slapdash, and might take some work on your part. A few units have gaps in either the wood panels themselves or in the glue that require fixing prior to use. Oddly enough, they’ve also carpeted the inside of the vent, which makes the carpet itself oddly shaped and more prone to shifting and tearing.
- Apply additional wood glue to every wall joint to prevent any possible air leaks and to make the subwoofer more durable. Some aftermarket enclosures may come with a few defects, and it’s better to take caution before the enclosure falls apart.
- Always measure your subwoofer system and trunk size before buying a box. If you are buying your enclosure online, you should be keen on the product dimensions to get the perfect size that wouldn’t damage your subwoofers by rattling them.
Q: What’s the best wood for a subwoofer box?
A: MDF wood is ideal for making subwoofer enclosures. The wood is strong, durable, and thick enough to limit distortion of sound waves. A close second is a plywood, which is lighter than MDF, but sturdy enough to create the best sound-quality if laminated. Your third best option could be fiberglass since it’s strong and light, and non-reactive to weather and temperature changes.
Q: Can I put different subwoofer sizes in one box?
A: It’s not advisable to do that. Always go for different boxes that are compatible with the size of your subwoofers. Otherwise, you may end up with distorted sound and damaged subwoofers caused by all the vibration from the extra space.
Q: Where is the best place to position a dual subwoofer box?
A: If you have the best combination of a high-performance amplifier, subwoofer, and enclosure, then it won’t really matter where you place the box as you will always get great sound quality. However, most people fit their sub boxes under the seats as it saves on trunk space.
Our top pick for the best deep bass subwoofer box design is the Bbox E12DSV Dual 12” Shared Vented Carpeted Subwoofer Enclosure. It has a chic carpeted exterior that complements any vehicle’s interior, as well as a universal design suitable for 10- to 12-inch subwoofers.
Our value pick is the QPower Angled Style 6x9 Speaker Box Enclosures. You get two individual subwoofer boxes for the price of one, both of which boast premium features for small enclosures.