Performance Series · Datasheet

P12-S | Single 12" Sealed Subwoofer Enclosure | V3 Single 12" Sealed enclosure

Net volume
1.25 ft³
Tuning
N/A
Max mounting depth
10"
Cutout
11.15"
External dimensions
19.5" W x 14.5" H x 11.5" D
Front baffle
0.75" Single Baffle
Buy at Audio Intensity
  • Best For: Single 12" sealed installs, accurate bass, compact footprint
  • Volume: 1.25 ft³ Net
  • Tuning: N/A, Sealed
  • Sonic Character: Tight, transient-accurate, flat response

Technical specifications

MaterialLangboard Elite MDF, 3/4" (18mm)
Enclosure TypeSealed
Net Internal Volume1.25 ft³
Tuning FrequencyN/A
External Dimensions19.5" W x 14.5" H x 11.5" D
Subwoofer Cutout11.15"
Max Mounting Depth10"
Front Panel Thickness0.75" Single Baffle
FinishDark Gray Trunkliner / Plush Black
Terminal CupABS/Carbon Fiber Composite, recessed mount, stainless hardware, copper ring terminals
WiringPre-wired 12g OFC speaker wire
Warranty1-Year Limited

Installer's take

The 10" max mounting depth is the standout spec on this enclosure. Most single 12" sealed boxes in this price range are built around shallower drivers. You hit a depth limit the moment you step up to a high-excursion motor. The P12-S is dimensioned to handle those drivers without modification, which opens up the compatible driver list considerably. At 1.25 ft³ net the volume is well-matched to most standard 12" drivers in a sealed alignment. You are not padding an oversized box or fighting an undersized one. At 19.5" wide and 11.5" deep this is one of the more compact single 12" sealed boxes in the Performance Series lineup, which makes it a strong candidate for trunk installs in sedans and coupes where depth is limited.

Construction

Dado & V Cut Construction for Maximum Strength

Dado & V Cut Construction for Maximum Strength

Our 12-inch car audio box features innovative Dado and V Cut construction techniques. These precise woodworking methods securely interlock panels, significantly increasing overall box strength and durability. This enhanced structure dramatically reduces unwanted resonance and vibration, delivering cleaner and more precise bass. Your sealed bass enclosure will effortlessly handle powerful subwoofers, providing reliable performance and longevity, ensuring you enjoy superior audio quality consistently.

Preassembled with Titebond II Wood Glue

Preassembled with Titebond II Wood Glue

Every compact subwoofer enclosure is carefully preassembled using Titebond II wood glue, a high-quality adhesive known for its exceptional bonding strength and moisture resistance. This meticulous application creates an airtight seal, minimizing air leaks and enhancing acoustic efficiency. The preassembly ensures durability and consistency, resulting in superior bass performance and reliable long-term use, ideally suited for demanding audio environments.

Rounded Corners for Easy Installation

Rounded Corners for Easy Installation

Designed with rounded corners, our sealed sub-box 12-inch enclosure ensures hassle-free installation in various vehicle types. Rounded corners provide a clean, modern aesthetic and prevent snagging or damage during installation, especially in compact spaces. This practical design approach simplifies placement and ensures your enclosure fits securely and attractively into your vehicle, enhancing both form and function.

Custom Terminal Cup with Pre-Installed Wiring

Custom Terminal Cup with Pre-Installed Wiring

Our sealed subwoofer enclosure includes a high-power custom terminal cup prewired with premium 12-gauge OFC speaker wire. This feature ensures exceptional electrical performance and durability by utilizing corrosion-resistant stainless steel hardware. Pre-installed wiring significantly simplifies the installation process, allowing you to connect your subwoofer quickly and enjoy enhanced audio quality immediately. This user-friendly approach guarantees professional-level results without the complexity.

Questions

What subwoofers are compatible with the Proline X Performance P12-S Enclosure?

This enclosure is compatible with most standard 12-inch subwoofers, including single and dual voice coil configurations. It is designed to provide optimal performance for subwoofers that fit within the recommended volume range of sealed enclosures, which ensures accurate bass response. Ensure your subwoofer matches the internal volume requirement to maximize performance and prevent potential distortion issues.

How does a sealed enclosure like the P12-S affect bass response?

Sealed enclosures like the P12-S provide a tight, accurate bass response, making them ideal for audiophiles seeking precision. They offer a more controlled and natural sound than ported enclosures, which can sometimes overly emphasize specific frequencies. The sealed design also helps produce clean low-end frequencies, resulting in a well-balanced bass that integrates seamlessly with the rest of the audio system.

What materials are used in the construction of this enclosure?

The P12-S is constructed from high-quality MDF (Medium Density Fiberboard) to ensure durability and acoustic performance. MDF is chosen for its density, which minimizes unwanted vibrations affecting sound quality. The enclosure also features internal bracing to reduce resonance and maintain structural integrity, resulting in a solid, long-lasting product that enhances sound clarity and bass accuracy.

Is the P12-S enclosure pre-wired?

The P12-S III is pre-wired using a single 12g OFC speaker wire. Users can configure wiring according to their specific subwoofer and amplifier setup, customizing the impedance and connection type based on system requirements. It has high-quality terminal connections for easy wiring, ensuring a secure connection and optimal signal transfer.

How does this enclosure handle power from the subwoofer?

The Proline X P12-S is designed to handle high-powered subwoofers without compromising enclosure integrity. Proper internal bracing and high-quality MDF construction help distribute the energy efficiently, preventing unwanted vibrations or damage. To achieve the best performance, pair it with a subwoofer whose power rating matches your amplifier to avoid overpowering or underutilizing the system.

Can this enclosure fit in most vehicle trunks?

Yes, the P12-S is designed to fit in most car trunks, including sedans, SUVs, and hatchbacks. Its dimensions are optimized for practical vehicle use while maintaining the necessary internal volume for subwoofer performance. Measuring your available space before purchasing is always recommended to confirm that the enclosure will fit comfortably without obstructing other components.

How much airspace does the P12-S provide for the subwoofer?

The P12-S offers approximately 1.25 cubic feet of internal airspace, ideal for many 12-inch subwoofers. This volume delivers a balanced sound that combines deep bass with clarity without overemphasizing any frequency range. Always check your subwoofer’s specifications to confirm that the recommended airspace matches the enclosure's capacity for optimal performance.

Why should I choose a sealed enclosure over a ported one?

A sealed enclosure like the P12-S offers a more accurate and tighter bass response, ideal for music genres such as jazz, classical, and rock requiring precision. Ported enclosures, while generally louder, can sometimes lack the accuracy that sealed enclosures provide. If you prioritize sound quality and tighter bass and want to avoid the boominess associated with ported enclosures, a sealed option is the better choice.

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