8 Inch Subwoofer Boxes

8 Inch Subwoofer Boxes

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Shop 8 inch subwoofer boxes and car audio enclosures for trucks, compact cars, under-seat systems, behind-seat installations, center consoles, daily drivers and high-output multiple-8-inch builds.

An 8-inch subwoofer can deliver serious bass without requiring the enclosure space of a larger 10-inch, 12-inch or 15-inch system. The enclosure still has to be designed around the exact subwoofer, including its required airspace, mounting depth, displacement, port requirements and intended tuning.

Shop all subwoofer boxes | Shop 8 inch subwoofers | Shop car audio amplifiers

Why Choose an 8 Inch Subwoofer Box?

An 8 inch subwoofer enclosure is a strong choice when you want real low-frequency output but do not want a large enclosure taking over the vehicle.

Common applications include:

• Single-cab pickup trucks
• Under-seat truck systems
• Behind-seat enclosures
• Compact cars
• Small trunks
• Custom center consoles
• Stealth bass systems
• Motorcycles and powersports builds
• Single 8-inch subwoofer systems
• Dual and multiple-8-inch builds

The smaller enclosure requirements of many 8-inch subwoofers make this size especially useful when available space is one of the biggest limitations of the build.

8 Inch Ported Subwoofer Boxes

A ported 8 inch subwoofer box uses a tuned vent or port to improve efficiency and output around a specific frequency range.

Ported 8-inch enclosures are popular when the goal is to get strong output from a relatively compact bass system.

A properly designed ported enclosure needs to account for:

• Net internal airspace
• Subwoofer displacement
• Port displacement
• Port area
• Port length
• Tuning frequency
• Mounting depth
• Amplifier power

Two different 8-inch subwoofers can require completely different enclosure volumes and port designs, even though they use the same nominal woofer size.

8 Inch Sealed Subwoofer Boxes

A sealed 8 inch subwoofer box can be useful when enclosure size, simplicity and controlled bass are priorities.

Depending on the exact subwoofer, sealed enclosures can work well for:

• Compact daily-driver systems
• Behind-seat truck installations
• Small trunk builds
• Custom side panels
• Stealth installations
• Systems focused on clean and controlled bass

Always verify that the exact subwoofer is recommended for sealed use and check the required net internal volume before selecting an enclosure.

Single 8 Inch Subwoofer Boxes

A single 8 inch subwoofer box is one of the simplest ways to add bass while keeping the system compact.

A properly matched single 8 can work well in:

• Daily drivers
• Single-cab trucks
• Compact cars
• Small SUVs
• Center-console installations
• Stealth bass systems

The performance of the system depends on the subwoofer, enclosure design, amplifier power and vehicle rather than woofer diameter alone.

Dual 8 Inch Subwoofer Boxes

A dual 8 inch subwoofer box gives you more total cone area while still allowing a relatively compact enclosure compared with many larger-subwoofer systems.

Dual 8-inch systems are especially popular in trucks and other vehicles where mounting height or depth makes larger subwoofers difficult to install.

When planning a dual-8 system, check:

• Total required enclosure volume
• Subwoofer displacement
• Final wired impedance
• Amplifier RMS output
• Available mounting depth
• Port area and tuning
• Electrical system requirements

Multiple 8 Inch Subwoofer Builds

Eight-inch subwoofers are also popular for systems using three, four or even more drivers.

Multiple 8s can provide substantial total cone area while allowing builders to use enclosure shapes and layouts that may be difficult with larger subwoofers.

The enclosure should be designed around the combined requirements of all of the subwoofers rather than simply multiplying the outside dimensions of a single-sub box.

8 Inch Subwoofer Boxes for Trucks

Trucks are one of the most popular applications for 8-inch subwoofer enclosures because cabin and storage space are often limited.

An 8-inch truck subwoofer box may be installed:

• Behind the seat
• Under the rear seat
• Inside a custom center console
• Along the rear cab wall
• Inside a custom side panel

Before ordering, measure seat travel, available height, available depth and clearance for the subwoofer motor, cone movement and terminals.

Under-Seat 8 Inch Subwoofer Boxes

An under-seat enclosure can preserve useful cargo and passenger space while still adding low-frequency output.

Under-seat installations require careful attention to:

• Maximum enclosure height
• Subwoofer mounting depth
• Seat clearance
• Cone excursion clearance
• Terminal clearance
• Required internal airspace

A box that physically fits under the seat is not automatically large enough internally for the subwoofer you plan to use.

Shallow 8 Inch Subwoofer Boxes

Shallow-mount 8-inch subwoofers can make bass possible in locations where a conventional full-depth woofer will not fit.

A shallow enclosure may be useful for:

• Standard-cab trucks
• Behind-seat systems
• Under-seat enclosures
• Compact trunks
• Stealth installations
• Custom side panels

Even a shallow subwoofer still requires the correct airspace and enough clearance for the cone, surround, terminals and wiring.

Match the Box to the 8 Inch Subwoofer

Not every 8 inch subwoofer belongs in the same enclosure.

Before choosing a box, compare the enclosure requirements for the exact woofer:

• Recommended sealed airspace
• Recommended ported airspace
• Recommended tuning frequency
• Driver displacement
• Mounting depth
• Cutout diameter
• Magnet clearance
• Cone and surround clearance
• Required port area

A box can physically accept an 8-inch subwoofer and still be the wrong enclosure for that particular driver.

8 Inch Subwoofer Box Material

Car audio enclosures are commonly built from materials such as MDF and birch plywood.

Both can work extremely well when the enclosure is properly designed and constructed.

Important factors include:

• Material thickness
• Panel strength
• Bracing
• Joint construction
• Airspace
• Port design
• Overall enclosure rigidity

The best enclosure is the one that correctly matches the subwoofer and application rather than simply being made from a particular material.

8 Inch vs 6.5 Inch Subwoofer Boxes

An 8-inch subwoofer generally provides more cone area than a 6.5-inch woofer and may offer greater output potential when comparing similar designs.

A 6.5-inch subwoofer can require even less space and may work better in extremely tight installations.

If mounting space is especially limited, compare our 6.5 inch subwoofer boxes.

8 Inch vs 10 Inch Subwoofer Boxes

An 8-inch subwoofer system usually requires less enclosure space than a comparable 10-inch system.

A 10-inch subwoofer provides more cone area and may offer additional output potential when there is enough room for the larger woofer and enclosure.

Choose based on the space available in the vehicle, the exact subwoofer, desired output and the amount of enclosure volume you can realistically provide.

Choosing an Amplifier for an 8 Inch Subwoofer

The amplifier should be matched to the actual subwoofer rather than simply choosing power based on woofer diameter.

Check:

• Subwoofer RMS power handling
• Voice-coil configuration
• Number of subwoofers
• Final wired impedance
• Amplifier RMS output at that impedance

Browse our car audio amplifiers when matching power to your 8-inch subwoofer system.

Measure Before Ordering

Before choosing an 8-inch subwoofer enclosure, check both the vehicle dimensions and the specifications of the exact subwoofer.

Verify:

• Box width
• Box height
• Box depth
• Subwoofer cutout diameter
• Maximum mounting depth
• Net internal airspace
• Port dimensions when applicable
• Magnet clearance
• Cone and surround clearance

8 Inch Subwoofer Box FAQs

Do all 8 inch subwoofers use the same box?

No. Different 8-inch subwoofers can require very different airspace, mounting depth, port area and tuning.

Can an 8 inch subwoofer use a ported box?

Yes, if the exact subwoofer is designed for a ported enclosure. Follow the manufacturer's recommended enclosure volume and tuning.

Can an 8 inch subwoofer use a sealed box?

Some can. Check the specifications for the exact subwoofer before choosing a sealed enclosure.

Are 8 inch subwoofer boxes good for trucks?

Yes. Eight-inch systems are popular in trucks because compact enclosures can often fit behind seats, under seats or inside custom center consoles.

Can I run two 8 inch subwoofers?

Yes. Dual 8-inch systems can provide increased cone area and output when the enclosure volume, amplifier power and final impedance are matched correctly.

Can multiple 8 inch subs get loud?

Yes. Multiple high-output 8-inch subwoofers can produce substantial bass when they are used in the correct enclosure and powered properly.

Does an 8 inch subwoofer need a small box?

Usually smaller than many larger subwoofers, but the correct enclosure volume depends on the exact driver. Do not make the box smaller than the subwoofer requires simply because it is an 8-inch woofer.

Shop 8 Inch Subwoofer Boxes at Audio Sellerz

Shop AudioSellerz.com for 8 inch subwoofer boxes, single 8 subwoofer boxes, dual 8 subwoofer boxes, ported 8 inch enclosures and compact car audio sub boxes for trucks, compact cars and tight-space bass systems.

Need the subwoofer too? Browse our 8 inch car audio subwoofers.

If you are unsure whether a box matches your subwoofer, use the live chat bubble on AudioSellerz.com and send us the exact subwoofer model and vehicle you are building.

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