1 / 6
Reviewers praise the Prime 250 as a small, easy-to-install mono amp that delivers strong, deep bass for single-sub setups and shows Rockford Fosgate reliability and helpful support.
Buyer confidence
90%Highlights
- 1 Year Warranty
- Variable Infrasonic Filter
- Class-D Topology
- Cast aluminum heat sink
Key specs
Full specs- Number of Channels
- 1
- Total Power (Sum of Rated Power)
- 250 Watts
- Rated Power (RMS Continuous Power)
- 150 Watts x 1 @ 4Ω 250 Watts x 1 @ 2Ω
- Dynamic Power (PVC/PowerCube®)
- 209 Watts x 1 @ 4Ω 328 Watts x 1 @ 2Ω
- Bridgeable
- No
- Frequency Response
- 20 Hz - 250 Hz
- Input Sensitivity
- Low-Level: 150 mV - 4 V High-Level: 450 mV - 12 V
- Circuit Topology Class
- Class-D
Key specs
Full specs- Number of Channels
- 1
- Total Power (Sum of Rated Power)
- 250 Watts
- Rated Power (RMS Continuous Power)
- 150 Watts x 1 @ 4Ω 250 Watts x 1 @ 2Ω
- Dynamic Power (PVC/PowerCube®)
- 209 Watts x 1 @ 4Ω 328 Watts x 1 @ 2Ω
Highlights
Overview- 1 Year Warranty
- Variable Infrasonic Filter
- Class-D Topology
Review highlights
Based on customer reviewsRockford Fosgate Prime 250 Watt Mono Amplifier — compact, punchy power
Reviewers praise the Prime 250 as a small, easy-to-install mono amp that delivers strong, deep bass for single-sub setups and shows Rockford Fosgate reliability and helpful support.
What buyers praise
- Punchy, deep bass for single-sub installations
- Plenty of power — reviewers cited spec/certificate outputs near ~200W at 4Ω and higher at 2Ω
What to watch for
- Can overpower small subs if not matched—some reviewers reported potential over-driving of 8" units
Overview
The Prime R2-250X1 is a 250 watt Class-D mono amplifier designed for subwoofer use. It runs at either 4Ω or 2Ω mono and combines efficient power delivery with controls to tune bass response.
Best for
- Adding or powering a single subwoofer in a car audio system
- Owners who want efficient, low-draw bass amplification
- Systems where easy tuning and integration with factory or aftermarket head units is needed
Key points
- 250 watt Class-D mono amplifier
- Operates at 4Ω or 2Ω mono
- C.L.E.A.N. circuitry for simplified gain adjustment
- P.O.W.E.R. supply that increases output with higher voltage
- Integrated Punch EQ to enhance bass output
- Variable infrasonic filter and remote level control for tuning
Fit and use
Intended as a mono subwoofer amplifier; wire and configure it for a single-channel subwoofer load at either 4Ω or 2Ω. Use the C.L.E.A.N. control, Punch EQ, infrasonic filter, and remote level control to match bass response to the vehicle and listener preference. Suitable for use with factory or aftermarket source units when proper inputs and wiring are provided.
What to know
Class-D design improves electrical efficiency and reduces demand on the vehicle’s electrical system. C.L.E.A.N. circuitry simplifies gain-setting to help reduce distortion and noise when matching source levels. P.O.W.E.R. supply provides more available output as system voltage increases. CTA-2006 compliance indicates…
Highlights
Key features
- 1 Year Warranty
- Variable Infrasonic Filter
- Class-D Topology
- Cast aluminum heat sink
- Features C.L.E.A.N. Set-up
- 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 level
- Continuously Variable On Board Punch EQ
- Top Mounted Control Panel
- Short Circuit & Over Current Protection
More info
Manufacturer details
Primed for Performance, the R2-250X1 is a 250 watt, Class-D amplifier, capable of operating at 4Ω or 2Ω mono. This amplifier is extremely efficient because of its Class-D technology which reduces demand on the vehicles electrical system. The amp also features C.L.E.A.N. circuitry to help you adjust your gain settings, a P.O.W.E.R. supply that generates more power as voltage increases, and integrated Punch EQ that corrects for acoustic deficiencies while delivering up to 3X the bass. Perfect for subwoofers, a variable infrasonic filter and remote level control allows you to tune the bass for the desired level for the music.
Additional details
The R2 models are developed for car audio fanatics that want a reliable amplifier – with all the power and performance you’ve come to expect from Rockford Fosgate – at an economical price. Rockford Fosgate amplifiers are renowned world-wide for being “under rated,” easily surpassing all specifications, and most importantly, generating more power than their ratings. These 3rd generation of Prime Series amplifiers are refined with the latest Rockford Fosgate technology for easy setup and configuration, making them perfect for use with factory audio or custom aftermarket systems.
Technologies
P.O.W.E.R.
Power supply circuit design that allows the amplifier to increase output power as voltage increases.
Class-D
High efficiency amplifier design that reduces current consumption from the charging system.
Patent: 8,712,066
C.L.E.A.N. Technology
Time and sophisticated test equipment have been replaced, with Rockford’s integrated level setting technology
CTA-2006 Compliant
Power ratings on Rockford Fosgate amplifiers conform to CTA-2006 industry standards. These guidelines mean your
MEHSA 4 (Maximum Efficiency Heat Sink Application)
MEHSA4 (Maximum Efficiency Heat Sink Application - gen. 4) is a proprietary process that yields a better heat
Balanced Differential Inputs
Differential input circuitry measures the voltage of both the (+) and (-) input signal. The circuitry subtracts
NOMAD
NOMAD is a "real time" analog computer that protects your amplifier from shorting speaker wires and ...
Rollback Protection
During demanding musical conditions, the amplifier can dynamically reduce demand to prevent stress on the output
CE Compliant
This product fulfills all essential safety and environmental requirements as defined in the European Directives
Specs
Specifications
24
| Number of Channels | 1 |
| Total Power (Sum of Rated Power) | 250 Watts |
| Rated Power (RMS Continuous Power) | 150 Watts x 1 @ 4Ω 250 Watts x 1 @ 2Ω |
| Dynamic Power (PVC/PowerCube®) | 209 Watts x 1 @ 4Ω 328 Watts x 1 @ 2Ω |
| Bridgeable | No |
| Frequency Response | 20 Hz - 250 Hz |
| Input Sensitivity | Low-Level: 150 mV - 4 V High-Level: 450 mV - 12 V |
| Circuit Topology Class | Class-D |
| Total Harmonic Distortion (THD+Noise) | 4Ω: <1.0% 2Ω: <1.0% |
| Signal Input | Low-Level: 2 RCA High-Level: 4-Pin Molex |
| Signal Output | Low-Level: 2 RCA (Pass-Thru active with RCA or Hi-Level input) |
| Tone Controls | 0 to +18 dB @ 45 Hz |
| Crossover Controls | Low-Pass: 50 Hz - 250 Hz @ 12dB/Octave Butterworth Infrasonic: 15 Hz - 40 Hz @ 12dB/Octave Butterworth |
| Remote Controls | Yes |
| Visual Indicators | POWER (Blue) / PROTECT (Red) C.L.E.A.N. IN (Red) C.L.E.A.N. OUT (Blue/Red) |
| Power Wire Gauge | 4 AWG |
| Power Input Connector | Compression Terminal Block |
| Speaker Wire Gauge | 8 AWG |
| Speaker Output Connector | Compression Terminal Block |
| Cooling | Convection |
| Operating Voltage | 9 - 16 VDC |
| Recommended Fuse (not included) | 50 A |
| Max. Current Draw (13.8V Sinewave) | 30 V |
| 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) |
Reviews (0)
—
No average rating yet
0 reviews
No written reviews are live yet. Signed-in customers can submit one below.
No written reviews are live for this item yet.
Installation resources
Wiring diagrams
11
Wiring Diagram #1
Source: Rockford Fosgate
Wiring Diagram #2
Source: Rockford Fosgate
Wiring Diagram #3
Source: Rockford Fosgate
Wiring Diagram #4
Source: Rockford Fosgate
Wiring Diagram #5
Source: Rockford Fosgate
Wiring Diagram #6
Source: Rockford Fosgate
Wiring Diagram #7
Source: Rockford Fosgate
Wiring Diagram #8
Source: Rockford Fosgate
Wiring Diagram #9
Source: Rockford Fosgate
Support
Return Authorization
If you bought this product from Onkar Electronics, use the Contact Us page on the Onkar Electronics website and we will help with return authorization and warranty support. If you purchased it from another dealer, contact that authorized dealer first for return assistance.
Popular Questions
No FAQs available
Videos
Video
Accessories
Rockford Fosgate
RFK4D 4 AWG Complete Dual Amp Installation Kit
4.675 reviews
$379.99CAD
$449.99
In stock
Rockford Fosgate
RFK4X 4 AWG Complete Installation Kit
4.775 reviews
$259.99CAD
$319.99
In stock
Rockford Fosgate
RFK4I 4 AWG Power & Signal Installation Kit
5.05 reviews
$289.99CAD
$349.99
In stock
Rockford Fosgate
RFK4 4 AWG Power Installation Kit
4.764 reviews
$199.99CAD
$239.99
In stock
Similar products
Compare nearby options
Rockford Fosgate•Prime
R2-500X1 Prime 500 Watt Mono Amplifier
4.9124 reviews
$459.99CAD
$549.99
In stock
Rockford Fosgate•Punch
P300X1 Punch 300 Watt Full-Range Mono Amplifier
4.956 reviews
$419.99CAD
$489.99
In stock
Rockford Fosgate•Punch
PBR300X1 Punch Boosted Rail 300 Watt Mono Amplifier
$419.99CAD
$489.99
In stock
Rockford Fosgate•Punch
PM100X1K Punch 100 Watt Full-Range Element Ready Mono Amplifier (pair)
$469.99CAD
$559.99
In stock
Rockford Fosgate•Prime
R2-750X1 Prime 750 Watt Mono Amplifier
4.930 reviews
$579.99CAD
$689.99
In stock
Rockford Fosgate•Prime
R2-1200X1 Prime 1200 Watt Mono Amplifier
4.986 reviews
$679.99CAD
$799.99
In stock
Rockford Fosgate•Punch
P500X1bd Punch 500 Watt Class-bd Mono Amplifier
4.728 reviews
$619.99CAD
$739.99
In stock
Rockford Fosgate•Power
T1500-1bdCP Power 1,500 Watt Class-bd Constant Power Amplifier
4.861 reviews
$1179.99CAD
$1399.99
In stock