Rockford Fosgate P2-1X12 12" Ported Loaded Subwoofer

The Rockford Fosgate P2-1X12 is a loaded ported subwoofer enclosure built around one 12-inch Punch P2 dual-voice-coil woofer. It provides a straightforward way to add dedicated low-frequency output to a vehicle audio system without designing and building a separate enclosure. The enclosure is internally wired for a 1-ohm nominal amplifier load.

This model is intended for listeners who want a preloaded bass solution for a trunk, hatch, or cargo-area installation. Its 400-watt RMS power rating gives shoppers a clear target when selecting a compatible mono amplifier. Because it is a passive enclosure, an external amplifier and speaker wiring are required.

The vented enclosure design is tuned to support low-frequency extension and higher output than a comparable sealed-box approach. Rockford Fosgate specifies a 26-250 Hz frequency response and 86 dB sensitivity for the loaded system. This makes it suitable for systems where the main speakers handle midrange and high frequencies while the subwoofer handles bass.

Inside, the enclosure uses a Punch P2D2-12 subwoofer with dual 2-ohm voice coils wired internally to a 1-ohm load. The driver uses a Kevlar-reinforced paper-pulp cone, a tall-profile VAST Santoprene surround, and a high-temperature 2.25-inch four-layer voice coil. Its motor and cooling features are designed to support the rated continuous-power handling.

The P2-1X12 can serve as the bass foundation for an aftermarket head unit, factory-radio integration setup, or larger multi-amplifier system. Its high-current binding posts simplify connection from a compatible 1-ohm-stable amplifier. The complete enclosure format also avoids the need to choose a separate box for the included subwoofer.

Key Features

• 12-Inch Loaded Enclosure: Includes one Punch P2D2-12 subwoofer in a ready-to-connect ported cabinet.
• 1-Ohm Final Load: Internal wiring presents a 1-ohm nominal load to a compatible amplifier.
• 400-Watt RMS Handling: Matches with amplification rated appropriately for 400 watts RMS at 1 ohm.
• Vented Port Design: High-flow, low-noise port supports efficient low-frequency output.
• 5/8-Inch MDF Cabinet: Medium-density fiberboard construction provides a rigid enclosure structure.
• High-Current Binding Posts: Provides clear red-positive and black-negative amplifier connections.

Design & Installation

The P2-1X12 uses a 5/8-inch MDF enclosure covered in high-density carpet. Its ported design incorporates Rockford Fosgate's proprietary high-flow, low-noise port, while high-current binding posts provide the external speaker connection. The included P2D2-12 driver features a Kevlar-reinforced paper-pulp cone, Santoprene surround, dual spider assembly, and protective PVC motor cover.

Install the enclosure securely in a suitable vehicle cargo area, leaving the port unobstructed. Connect the amplifier's positive speaker output to the red enclosure terminal and its negative output to the black terminal; use an amplifier that is stable at 1 ohm and set up for the enclosure's 400-watt RMS rating. Disconnect the vehicle battery's negative terminal before installation, and route speaker cable away from high-current vehicle wiring where practical.