Rockford Fosgate R2-250X1 Prime Mono Class D Amplifier 250w RMS
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The Rockford Fosgate R2-250X1 is a mono Class-D subwoofer amplifier from the Prime range, delivering 250W RMS at 2 ohms (150W RMS at 4 ohms). It includes Punch EQ, a variable infrasonic filter, and an RLC remote level control.
Key specifications
- Model: R2-250X1
- Channels: 1 (mono), Class-D
- Rated power: 150W x 1 at 4 ohms, 250W x 1 at 2 ohms
- Frequency response: 20Hz – 250Hz
- Low-pass filter: 50Hz – 250Hz, 12dB/octave
- Infrasonic filter: 15Hz – 40Hz, 12dB/octave
- Punch EQ: 0 to +18dB at 45Hz
- Recommended fuse: 50A (not included)
- Dimensions (H x W x D): 49mm x 173mm x 205mm
Prime 250W Mono Amplifier
The R2-250X1 is a Class-D mono amplifier capable of operating at 4Ω or 2Ω. Class-D technology keeps the amp highly efficient, reducing demand on the vehicle's electrical system. It features C.L.E.A.N. circuitry for accurate gain setup, a P.O.W.E.R. supply that generates more power as voltage increases, and an integrated Punch EQ that corrects acoustic deficiencies and delivers up to 3x the bass. A variable infrasonic filter and the included RLC remote level control let you dial in the bass to suit the music. Pairs well with the Rockford Fosgate P1S4-12 Punch 12 Inch Subwoofer or the P1S2-12 2 Ohm version, both rated at a matching 250W RMS.
Key features
- 1 year warranty
- Variable infrasonic filter
- Class-D topology
- Cast aluminium heat sink
- C.L.E.A.N. gain setup circuitry
- Balanced differential inputs with RCA pass-through outputs
- High-level input capable
- Auto-sense bypass switch for vehicles with RAP (Retained Accessory Power)
- Variable input gain adjustment
- Continuously variable on-board Punch EQ
- Top-mounted control panel
- Short circuit and over-current protection
- Rollback protection
- Fully adjustable 12dB/octave high- and low-pass Butterworth crossovers
- Includes RLC remote level control
- CEA-2006 compliant and CE compliant
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Specification
| Input SensitivityLow-Level | 150 mV - 4 V |
|---|---|
| High-Level | 450 mV - 12 V |
| Total Harmonic Distortion (THD+Noise)4Ω | <1.0% 2Ω: <1.0% |
| Signal InputLow-Level | 2 RCA |
| High-Level | 4-Pin Molex |
| Signal OutputLow-Level | 2 RCA (Pass-Thru active with RCA or Hi-Level input) |
| Crossover Controls Low-Pass | 50 Hz - 250 Hz @ 12dB/Octave Butterworth |
| Dimensions | (H x W x D)1.9" x 6.8" x 8.1"(4.9 cm x 17.3 cm x 20.5 cm) |
More specs
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What's Included
- R2-250X1
- RLC remote level control
Rockford Fosgate
About the Rockford Fosgate R2-250X1
From our tech experts at CEN
A monoblock subwoofer amplifier from Rockford Fosgate, Class D, rated at 250w RMS.
Who it suits
Anyone adding a subwoofer that needs real power behind it. Rockford Fosgate has been a fixture of car audio since the 1970s, and the Punch name still means solid, honest output.
Our tech experts advise
Matching matters more than headline watts, and gains want setting with a meter rather than by ear. It needs a fused feed from the battery on the correct cable gauge. Installation is priced per vehicle, so get in touch with your make, model and year and we will confirm what it needs. See car audio installation.
Explore the full Rockford Fosgate range at CEN, with fast UK dispatch and expert advice from our Nottingham team. Shop all Rockford Fosgate
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Frequently Asked Questions
Q: How do I choose the right amplifier for my speakers or subwoofer?
A: Match the amplifier's RMS output per channel to the RMS handling of your speakers or subwoofer at the same impedance. The Specification tab lists the power figures. If in doubt, contact CEN with your setup and we will recommend a match.
Q: What wiring do I need to install this amplifier?
A: You will need an amplifier wiring kit sized to the amplifier's power draw, typically including power and earth cable, a fuse, RCA leads and a remote wire. CEN stocks complete wiring kits, and the amplifier's fuse rating is the guide to the cable gauge required.
Q: What class of amplifier is this and does it matter?
A: Class D amplifiers are compact and efficient, ideal for subwoofers and modern installs. Class AB designs are traditionally favoured for outright sound quality on mid and high frequencies. The class is listed in the Specification tab where provided.
Q: Will an amplifier work with my factory head unit?
A: Yes, in most cases. If your head unit has no RCA outputs you will need a line output converter to feed the amplifier a clean signal. CEN stocks line output converters and can advise the right one for your vehicle.
Q: Can CEN install this amplifier?
A: Yes. CEN offers professional amplifier installation from our Nottingham premises, including secure mounting, wiring and setup. Contact us to book.
Q: How much power does the R2-250X1 produce?
A: The R2-250X1 is rated at 150W RMS x 1 at 4 ohms and 250W RMS x 1 at 2 ohms. It is not bridgeable.
Q: Does the R2-250X1 come with a bass remote?
A: Yes. The RLC remote level control is included in the box, so you can adjust the bass level from the driving position.
Q: Can the R2-250X1 connect to a factory stereo without RCA outputs?
A: Yes. It has high-level speaker inputs (450mV - 12V) via a 4-pin Molex connector as well as low-level RCA inputs, and an auto-sense switch for vehicles with retained accessory power.
