Rockford Fosgate P2-D2-12 12" Dual 2-Ohm Subwoofer

The Rockford Fosgate P2-D2-12 is a 12-inch dual-voice-coil car subwoofer designed to add controlled low-frequency output to an aftermarket audio system. Its dual 2-ohm voice coils give installers wiring flexibility when matching the subwoofer to a compatible amplifier. With a 400-watt RMS power rating, it is intended for systems that need substantial bass without stepping into oversized multi-subwoofer installations.

This subwoofer is suited to listeners building a dedicated bass section for music with strong kick drums, bass lines, and low-end effects. The P2-D2-12 uses a reinforced paper-pulp cone, a tall-profile Santoprene surround, and a vented motor structure to support repeated cone movement. Its performance can be tailored through enclosure choice, with recommended sealed and ported alignments available from the manufacturer.

A high-modulus Kevlar-fiber-reinforced paper-pulp cone provides the moving surface, while the dual poly-cotton spiders help control cone travel. The 2.25-inch, four-layer high-temperature voice coil uses a Nomex insulating reinforcement collar. Rockford Fosgate's spider venting design helps circulate air around the voice-coil area during operation.

The P2-D2-12 is built around an optimized motor with an extended pole piece and bumped, vented backplate. These features provide room for excursion while helping manage heat. Its specified sensitivity is 86 dB at 1 watt/1 meter, with a stated frequency response of 29 to 250 Hz.

For an upgrade path, pair this subwoofer with a properly configured mono or multi-channel amplifier that can deliver appropriate RMS power at the final wired load. A sealed enclosure emphasizes a compact installation and controlled response, while the recommended ported enclosure provides a lower tuned alignment. Installation requires a compatible enclosure, amplifier, wiring, and crossover settings appropriate for a subwoofer system.

Key Features

• 12-Inch DVC Design: Dual 2-ohm voice coils provide wiring options for compatible amplifiers.
• 400-Watt RMS Rating: Supports sustained power handling for a properly matched amplifier.
• Kevlar-Reinforced Cone: Reinforced paper-pulp construction supports stable bass reproduction.
• Spider Venting: Venting helps cool the voice-coil area during use.
• VAST Santoprene Surround: Tall-profile surround supports cone travel and usable radiating area.
• FlexFit Mounting: Flexible mounting pattern helps accommodate enclosure installation.

Design & Installation

The P2-D2-12 uses a sturdy 16-gauge compound-bend frame, a removable PVC protective motor cover, and a die-cast aluminum trim ring. Its cone is paired with a high-temperature voice coil, stitched flexible lead wires, dual poly-cotton spiders, and a vented backplate. The terminal assembly uses radially oriented all-metal compression terminals, with custom 10-AWG nickel-plated push terminals specified for this model.

Use an enclosure with at least the required 11.22-inch cutout diameter and 6.40-inch mounting-depth clearance. Rockford Fosgate specifies a 1.02 cu. ft. sealed enclosure or a 1.79 cu. ft. ported enclosure tuned to 40 Hz; the ported design calls for a 4-inch diameter, 11.8-inch-long port. Wire the two 2-ohm voice coils according to the amplifier's safe operating load, and use an active low-pass crossover; the manufacturer recommends 80-100 Hz at 12 dB per octave for subwoofer operation.