Rockford Fosgate P300-12 12" Powered Subwoofer Enclosure (300W Amplified Bass System for Car & Truck)

Overview

If you want to add bass to your vehicle without piecing together a full system, this is one of the easiest ways to do it.

The Rockford Fosgate P300-12 is a self-contained subwoofer system with a built-in amplifier and enclosure. It’s designed for quick installs and clean setups where space and simplicity matter.

This is a solid option for daily drivers looking to add low-end without getting into custom builds.

What You’re Getting

This is a complete all-in-one bass system.

You’re getting:

• 12" subwoofer in a sealed enclosure
• Built-in 300-watt amplifier
• Remote bass level control
• Power and signal connections for installation

Everything is already matched and built into one enclosure.

How It Performs

This setup delivers a noticeable improvement in bass over a factory system.

It’s designed for clean, controlled low-end that fills in the bottom of your music without overpowering everything else. It’s not meant to compete with large custom systems, but it does exactly what most daily drivers are looking for.

Installation

This is one of the simplest ways to add bass to a vehicle.

You’ll need to run power, ground, and a signal connection from your radio. It works with both factory and aftermarket systems using low-level or speaker-level inputs.

The compact enclosure makes it easy to place in a trunk or behind a seat.

Built for Real Use

The enclosure is built from MDF and wrapped in a durable finish to handle everyday use. The amplifier is built into the enclosure and designed to run efficiently without excessive heat.

Why Buy From Us

We’ve been doing this for over 30 years and install systems like this every day.

If you’re not sure if this is the right setup for your vehicle, we can help you figure that out before you buy.

What’s Included

• (1) P300-12 Powered Subwoofer Enclosure
• Remote Bass Level Control
• Power/Signal Connection Harness

Specifications

General:

• Woofer Size: 12"
• Enclosure Type: Sealed, Amplified
• Woofer Quantity: 1

Amplifier:

• Power Output: 300 Watts RMS
• Amplifier Type: Built-in Class-D
• Signal Inputs: RCA (Low-Level) / Speaker-Level (High-Level)

Controls & Features:

• Low Pass Crossover: 50Hz – 200Hz (12dB/Octave)
• Bass Boost: Adjustable
• Phase Switch: 0° / 180°
• Remote Bass Control: Included
• Auto Turn-On: Yes

Build & Design:

• Enclosure Material: 5/8" MDF
• Cooling: Convection
• Protection: Thermal and Voltage Protection

Wiring:

• Power Wire Gauge: 8 AWG
• Power Connection: Quick Disconnect

Dimensions:

• 15" H x 19.8" W x 11" / 7" D (wedge design)

Quick Questions

Q: Will this work with my factory radio?
A: Yes. It accepts both high-level and low-level inputs.

Q: Is this a good option for a beginner setup?
A: Yes. This is one of the easiest ways to add bass without building a full system.

Q: Can this be installed in a truck?
A: Yes. Depending on the truck, it can potentially fit behind or under seats.