Finding the right 8 inch subwoofer box for a pickup truck can dramatically improve bass response without sacrificing space or install ease. This guide highlights five high-quality options designed to fit under seats or in tight cab areas, while delivering strong low-end performance across various truck models. Each enclosure is chosen for durability, ease of install, and compatibility with common 8″ subs.
| Product | Vehicle Fit | Enclosure Type | Air Space |
|---|---|---|---|
| Skar Audio Quad 8″ Ported Subwoofer Enclosure (F-150 SuperCrew) | Ford F-150 (2015-2025) | Quad 8″ Ported | 2.00 Cubic Ft |
| Skar Audio Quad 8″ Ported Subwoofer Enclosure (Chevy Silverado/GMC Sierra Crew Cab) | Chevrolet Silverado / GMC Sierra (2019-2025) | Quad 8″ Ported | 2.80 Cubic Ft |
| Skar Audio Dual 8″ Ported Subwoofer Enclosure (F-150 SuperCrew) | Ford F-150 (2015-2025) | Dual 8″ Ported | 2.10 Cubic Ft |
| Goldwood TR8F 8″ Single Truck Box Speaker Cabinet | Universal (truck/cars) | Single 8″ Enclosure | .4 Cubic Feet |
| Skar Audio Quad 8″ Ported Subwoofer Enclosure (Chevy Silverado/GMC Sierra Crew Cab) | Chevrolet Silverado / GMC Sierra (2019-2025) | Quad 8″ Ported | 2.80 Cubic Ft |
Below is a focused look at each option, with key features and fit notes to help you compare quickly.
Skar Audio Quad 8″ Ported Enclosure for 2015-2025 Ford F-150 SuperCrew
The Skar Audio Quad 8″ Ported Subwoofer Enclosure is designed to fit under the rear seat of the Ford F-150 SuperCrew (2015-2025). It uses a front-firing design to maximize bass output within a compact footprint and offers 2.00 cubic feet of internal air space. The enclosure is finished in premium automotive-grade black trunk-liner carpeting for a clean, durable finish and blends with most truck interiors. A key feature is its compatibility with under-seat installation, minimizing the need for modifications.
Ideal for owners who want a strong, room-filling bass response from four 8″ subwoofers without sacrificing interior space. The front-firing design helps project bass upward and forward, which can improve perceived loudness in the cabin. Built to withstand typical truck use, it’s a practical choice for daily drivers who prioritize a balanced bass between music genres and podcasts.
Skar Audio Quad 8″ Ported Enclosure for 2019-2025 Chevy Silverado/GMC Sierra Crew Cab
This enclosure accommodates quad 8″ subwoofers and is tuned for front-firing performance in crew cab trucks such as the Chevy Silverado and GMC Sierra (2019-2025). With a robust 2.80 cubic feet of air space, it aims to deliver a strong low-end presence even in noisy cabin environments. The unit ships with four 8″ subwoofers (Skar SVR-8 variants) ready for high-power applications, making it a compelling option for enthusiasts seeking a loud, clear, and deep bass response from a compact under-seat footprint.
Pros include high power handling potential, a design optimized for under-seat placement, and a finish that resists wear. As with any quad-sub setup, users should ensure their amplifier and wiring can handle the load and that mounting depth is compatible with their vehicle’s interior geometry.
Skar Audio Dual 8″ Ported Subwoofer Enclosure for 2015-2025 Ford F-150 SuperCrew
This enclosure features dual 8″ ported drivers designed for under-seat installation in the Ford F-150 SuperCrew (2015-2025). It offers 2.10 cubic feet of air space and a down-firing design to optimize bass projection within cab space constraints. Finished in premium black trunk-liner carpeting, the enclosure blends with most truck interiors and supports a high-performance bass system without major vehicle modifications.
Users can expect robust low-end extension and the flexibility to pair with a suitable high-power amplifier. The down-firing orientation helps distribute bass toward the cabin floor, contributing to a fuller sound while occupying minimal height under the seat.
Goldwood TR8F 8″ Single Truck Box
The Goldwood TR8F is a slim, single-8″ woofer enclosure designed for tight spaces. Its rigid MDF construction and a compact footprint (11.25″ height, 15.25″ length) make it adaptable to many truck installations. The enclosure uses a 7.125″ woofer hole diameter and includes a built-in terminal with gold screw posts, along with a black aviation carpet finish. Overall dimensions and a sealed (non-ported) design prioritize space efficiency for under-seat or trunk installations in a variety of trucks.
Best for users who want a simple, low-profile enclosure with straightforward installation. The sealed design can deliver tight, accurate bass with compatible subwoofers and amplifiers, though it may not deliver the same deep ported extension as larger models in louder bass setups.
Skar Audio Quad 8″ Ported Enclosure for 2019-2025 Chevy Silverado/GMC Sierra Crew Cab
This enclosure is designed for the Chevy Silverado and GMC Sierra crew cab models from 2019 to 2025. It features a 2.80 cubic feet internal air space and a front-firing, quad-8″ configuration to maximize bass output from a compact footprint. The enclosure is upholstered in premium black trunk-liner carpeting to maintain a clean look in the truck cabin. It’s a strong option for buyers who want substantial bass within a relatively shallow installation space.
As with other quad-8″ setups, ensure your amplifier can handle the total impedance and power demands, and confirm clearances under the rear seat or trunk area for a clean, vibration-free install.
8″ Shallow Ported Box and Other Compact Options
One additional option to consider is the RI Audio 8″ Shallow Ported Subwoofer Box. It’s designed for shallow mounting and compact spaces, with specific outside dimensions noted to fit under seats or in tight cargo areas. The shallow design helps when vertical clearance is limited in trucks, though it may offer different acoustic characteristics compared to deeper enclosures. This type of enclosure is suitable for users who prioritize fitment over maximum internal air volume.
Buying Guide: Key Considerations For Your 8-Inch Truck Subwoofer Enclosure
- Vehicle fit and mounting depth: Measure under-seat clearance, trunk height, and door panel clearance before choosing an enclosure. Some compact boxes are designed specifically for crew cab trucks, while others are more universal but require careful fitment.
- Enclosure type: Ported vs sealed affects bass quantity and speed. Ported boxes generally provide louder bass at a given power, while sealed boxes offer tighter, more accurate bass at the cost of some output.
- Internal air space: Larger air space typically yields deeper bass, but may require more mounting depth. Many 8″ enclosures aim for 2.0–2.8 cubic feet for strong performance in trucks.
- Power handling and compatibility: Ensure the enclosure is matched with compatible subwoofers and amplifiers. Quad-8″ configurations require careful impedance planning and a capable amp to utilize the system’s full potential.
- Finish and durability: Look for automotive-grade carpeting and solid MDF construction to withstand vibration and wear in daily driving conditions.
- Installation footprint: Consider whether you want under-seat, behind-seat, or trunk-mounted installations. Under-seat options free up cargo space but may have depth constraints.
- Speaker compatibility: Confirm the enclosure accepts standard 8″ subwoofers and check mounting depth recommendations for your chosen subs to avoid rubbing or binding.
- Sound goals: For loud, party-style bass, prioritize ported designs with higher internal air space. For precise, musical bass, prefer sealed or down-firing designs with a well-matched subwoofer and amplifier.
These considerations help balance space, power, and bass quality, ensuring an enclosure that fits your truck and your listening preferences. When selecting a model, match your truck model year, cab configuration, and intended music style to the enclosure’s design and air space.