Rockford Fosgate P1000X1BD 1000W Mono Subwoofer Amplifier

The Rockford Fosgate P1000X1BD is a mono car amplifier designed to power subwoofers and dedicated mid-bass drivers. It provides a single amplified channel with rated output ranging from 300 watts RMS at 4 ohms to 1,000 watts RMS at 1 ohm. This makes it a practical choice for a bass-focused system where the subwoofer load and amplifier power need to be matched carefully.

Its Class-BD circuit topology is engineered for low-frequency amplification, with a frequency response of 20Hz to 250Hz. The amplifier is intended for subwoofer duty rather than full-range speakers, helping keep bass amplification separate from the rest of the audio system. A variable low-pass crossover and fixed infrasonic filter support more controlled integration with component speakers or a factory audio system.

The P1000X1BD accepts either high-level or low-level audio through one pair of RCA inputs, which can simplify integration into systems without dedicated preamp outputs. Its high-level input capability includes an auto turn-on circuit. RCA pass-through outputs are also provided for sending signal to another amplifier.

Rockford Fosgate's C.L.E.A.N. setup system uses input and output clip indicators to assist with gain adjustment. The onboard Punch EQ2 bass control provides adjustable boost at 45Hz, while the low-pass crossover adjusts from 50Hz to 250Hz. These controls allow an installer to tailor the amp's bass range to the enclosure, subwoofer, and vehicle.

This amplifier is well suited to a subwoofer upgrade that requires stable operation at 1, 2, or 4 ohms. It can deliver 1,000 watts RMS into a 1-ohm load, 500 watts RMS into 2 ohms, or 300 watts RMS into 4 ohms. Proper power wiring, fusing, grounding, and subwoofer wiring are important for safe installation and expected performance.

Key Features

• Mono Class-BD Design: Dedicated low-frequency amplification for subwoofer and mid-bass applications.
• 1-Ohm Stable Output: Delivers up to 1,000 watts RMS into a 1-ohm load.
• High- and Low-Level Inputs: Connects to factory or aftermarket audio sources through RCA inputs.
• C.L.E.A.N. Setup: Input and output clip LEDs assist with gain setting.
• Punch EQ2 Bass Control: Adds adjustable bass boost at 45Hz when needed.
• Variable Filtering: Low-pass and infrasonic filters help manage subwoofer frequency range.

Design & Installation

The P1000X1BD uses a cast-aluminum heatsink and convection cooling to manage heat during operation. Its controls are positioned beneath a stealth top-mounted panel, while captive C-clamp connectors are used for power and speaker wiring. Protection features include over-current, short-circuit, and muted turn-on protection.

Mount the amplifier in a secure location with ventilation and use 4 AWG power wiring with an appropriately installed 140-amp fuse. The speaker terminals accept 8 AWG to 18 AWG wire, and the amplifier operates from a 9 to 16 VDC electrical system. For maximum rated output, wire compatible subwoofers to a final 1-ohm mono load; use the C.L.E.A.N. indicators and crossover controls during setup.