Rockford Fosgate P2D4-10 10" Dual 4-Ohm Subwoofer

The Rockford Fosgate P2D4-10 is a 10-inch Punch P2 car subwoofer designed to add controlled low-frequency output to an aftermarket audio system. Its dual 4-ohm voice-coil configuration gives installers wiring flexibility when matching a compatible amplifier. With a 300-watt RMS power rating, it is sized for systems that need meaningful bass without moving to a larger subwoofer.

This model is intended for listeners building a sealed or vented enclosure system in a car, truck, or SUV. A sealed enclosure supports a compact installation and a more controlled response, while the recommended vented enclosure is tuned for lower bass extension. The woofer's 27.2-250 Hz frequency-response rating helps it cover the bass range below full-range speakers.

A Kevlar-reinforced paper-pulp cone provides the moving surface for bass reproduction, while the tall-profile VAST Santoprene surround supports cone travel. The dual poly-cotton spider assembly uses embedded tinsel leads to help manage repeated movement. Its 2.25-inch, four-layer voice coils are built for the thermal demands associated with its rated power handling.

Rockford Fosgate uses an extended pole piece, bumped vented backplate, and integrated spider venting to support motor cooling and excursion control. The driver also uses a StampCast basket, a protective PVC motor cover, and a cast-aluminum trim ring. These construction details are intended to support stable installation and regular automotive use.

The P2D4-10 works as the bass section of a system with an external subwoofer amplifier and appropriate enclosure. Its dual 4-ohm coils may be wired to suit an amplifier's supported load, so the final wiring plan should be confirmed before installation. Rockford Fosgate recommends using an active low-pass crossover set from 80 to 100 Hz at 12 dB per octave for subwoofer operation.

Key Features

• 300-Watt RMS Rating: Supports amplifier matching based on continuous power handling.
• Dual 4-Ohm Voice Coils: Provides series or parallel wiring flexibility for compatible amplifiers.
• Kevlar-Reinforced Paper Cone: Combines paper-cone character with reinforced construction.
• VAST Santoprene Surround: Supports cone movement with a tall-profile surround design.
• Spider Venting System: Helps manage airflow around the voice-coil area.
• FlexFit Mounting Pattern: Allows some adjustment during mounting-hole alignment.

Design & Installation

The P2D4-10 uses a 16-gauge compound-bend StampCast frame, a dual tear- and fatigue-resistant poly-cotton spider, and flexible stitched-on lead wires. Its high-temperature 2.25-inch voice coils use a spun-laced Nomex insulating reinforcement collar. A removable PVC motor cover and die-cast aluminum trim ring complete the exterior design.

Allow for a 9.13-inch cutout diameter and 5.92 inches of mounting depth when planning the enclosure. Rockford Fosgate specifies a 0.59-cubic-foot sealed enclosure or a 1.40-cubic-foot vented enclosure, with the vented design using a 4-inch-diameter, 16.3-inch-long port. Use the dual 10-AWG compression terminals and wire the voice coils only for an impedance load the amplifier is rated to drive.