Rockford Fosgate R250X1 Prime 250 Watt Mono Amplifier

Compact chassis. Real power. Built for bass.

Product Overview

The Rockford Fosgate R250X1 is a mono Class A/B amplifier from the Prime series, purpose-built for subwoofer duty. Producing 250W RMS into a 2-ohm load or 150W RMS into 4 ohms it packs genuine Rockford Fosgate output into a slim, install-friendly chassis measuring just 5 x 17.2 x 28.5 cm. The frequency response is fixed between 20Hz and 250Hz, making it a dedicated bass amplifier rather than a full-range unit.

The R250X1 is a strong match for a pair of 8" or 10" 4-ohm SVC subwoofers wired in parallel, delivering clean, controlled bass from a single compact module. The on-board Punch Bass EQ provides up to +12dB of boost centred at 45Hz, letting you dial in the low end to suit your enclosure and listening environment. A Remote Punch Level Control (PLC) is included, allowing the driver to adjust output level from the front seat without reaching into the boot. CEA-2006 compliance ensures the 250W RMS rating reflects a verified, real-world measurement.

Key Specifications

• Channels: 1 (mono)
• Rated power: 150W RMS x 1 @ 4 ohms / 250W RMS x 1 @ 2 ohms
• Dynamic power: 186W x 1 @ 4 ohms / 298W x 1 @ 2 ohms (PowerCube)
• Bridgeable: No
• Circuit topology: Class A/B
• Frequency response: 20Hz – 250Hz (+/-1dB)
• Input sensitivity: 150mV – 4V
• Total harmonic distortion (THD+N): <1.0% @ 4 ohms, 2 ohms, and 1 ohm
• Crossover: Low-pass 50Hz–250Hz @ 12dB/octave Butterworth (on-board)
• Punch Bass EQ: 0dB to +12dB boost @ 45Hz
• Signal input: High level (4-pin Molex) / Low level (1 x RCA pair)
• Signal output: 1 x RCA pass-through pair
• Remote control: Punch Level Control (PLC) — included
• Operating voltage: 9–16V DC
• Power wire gauge: 4 AWG
• Speaker wire gauge: 8 AWG
• Recommended fuse: 30A (not included)
• CEA-2006 compliant

Features & Benefits

• On-Board Punch Bass EQ (+12dB @ 45Hz) — Dial in up to +12dB of bass boost centred at 45Hz directly from the amplifier. Useful for compensating for acoustic deficiencies in sealed enclosures or tuning the low end of a ported box to taste — without needing a separate equaliser.
• Remote Punch Level Control (PLC) — The included remote level control mounts within reach of the driver and ties directly to the amplifier's gain control. Adjust bass output on the fly to suit the track, road noise, or passenger preference — essential for long Australian highway runs where conditions constantly change.
• RCA Pass-Through Outputs — The single RCA pass-through output allows signal to be daisy-chained to an additional amplifier without the need for a separate signal splitter or Y-adaptor — keeping the install clean and signal path intact.
• High-Level Inputs — Factory head units without RCA preamp outputs? The R250X1 accepts high-level speaker wire inputs via a 4-pin Molex connector, making it compatible with factory audio systems straight out of the box — no line output converter required.
• 12dB/Octave Butterworth Low-Pass Crossover (50Hz–250Hz) — The on-board Butterworth crossover rolls off frequencies above your set point cleanly, directing only the intended bass signal to your subwoofer. Adjustable between 50Hz and 250Hz to suit sealed, ported, or bandpass enclosure tuning.
• 0°/180° Phase Switch — Correct phase alignment between the subwoofer and main speakers with a simple switch — particularly useful when mounting a subwoofer in an enclosure position where acoustic delay causes cancellation.
• Compact Stamp-Cast Aluminium Heatsink — At 5 x 17.2 x 28.5 cm, the R250X1 fits into tight boot or under-seat locations. Convection cooling via the cast aluminium heatsink keeps operating temperatures in check without a noisy fan — important in the high-ambient temperatures common in Australian summers.
• MOSFET Power Supply with Full Protection — MOSFET switching keeps the power supply efficient and responsive. Over-current and short-circuit protection, combined with a muted turn-on circuit, protect both the amplifier and connected subwoofers from damage during startup and fault conditions.
• CEA-2006 Compliant Power Ratings — The 250W RMS figure is measured under the CEA-2006 standard — a verified, signal-referenced measurement, not a burst or inflated marketing specification.

Technical Specs

Compatible With / Goes Well With

The R250X1 is designed for mono subwoofer applications. Confirmed use cases from the manufacturer include:

• A pair of 8" 4-ohm SVC subwoofers wired in parallel (presenting a 2-ohm load)
• A pair of 10" 4-ohm SVC subwoofers wired in parallel (presenting a 2-ohm load)
• Single 4-ohm SVC subwoofers (150W RMS rated output)
• Single 2-ohm SVC subwoofers (250W RMS rated output)
• Factory head units without RCA outputs (via high-level Molex input)

Goes well with:

• Rockford Fosgate Prime or Punch series subwoofers (8" or 10")
• Aftermarket head units with preamp RCA outputs
• Rockford Fosgate R-Series or P-Series enclosures

Frequently Asked Questions

What subwoofers will the R250X1 run?

The R250X1 works best with 4-ohm SVC subwoofers. Run a single sub for 150W RMS, or wire a pair in parallel for a 2-ohm load and the full 250W RMS output. The manufacturer specifically references 8" and 10" configurations.

Is the R250X1 bridgeable?

No. The R250X1 is a single-channel mono amplifier and is not bridgeable. If you need more output, consider stepping up to a higher-rated mono amplifier in the Rockford Fosgate Prime or Punch range.

Does it work with a factory head unit?

Yes. The R250X1 includes high-level inputs via a 4-pin Molex connector, allowing direct connection to factory speaker outputs. No line output converter is required for standard factory installations.

What wiring do I need for installation?

The R250X1 requires 4 AWG power and ground cable, 8 AWG speaker wire, and a 30A fuse (not included). A Remote Punch Level Control is included. Consult a qualified installer for best results.

What does CEA-2006 compliant mean?

CEA-2006 is an industry standard for measuring amplifier power under defined, real-world conditions. The 250W RMS rating is a verified, reproducible figure — not a burst or inflated peak specification.