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Rockford Fosgate Prime R250X1

250W RMS Monoblock Single Channel Class AB Prime Series Amplifier

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List price $199.99

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Rockford Fosgate Prime R250X1

250W RMS Monoblock Single Channel Class AB Prime Series Amplifier

$114.99

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Rockford Fosgate RFK8I 8-Gauge Wiring Kit

Get a matching Rockford Fosgate wiring kit for your new Rockford amplifier!

$49.99

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NVX XFLOC2

80W 2-Channel Line Output Converter with Digital Noise Filter + Line Driver

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AudioControl Epicenter-InDash

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Bundles with this Product

Save 25% on an 8 Gauge Amp Kit with Purchase!

You will need an amp kit to install your amp, and the Belva BAK82 is the perfect kit for this amp. For a limited time, when you click "Add Both to Cart", you'll receive 25% off the amp kit. This offer cannot be combined with any other coupons or offers.

3.25

67757

1212

Rockford Fosgate Prime R250X1

$114.99

+

25% OFF

Belva BAK82BL (Blue)

$12.99

Special Price $9.74 ($12.99 if purchased separately)

Belva BAK82BL (Blue)

• Complete 8 Gauge 2-Channel Amplifier Installation Kit
• Designed Specifically For Car Audio Systems Up to 500 Watts RMS
• Premium Power and Ground Wire Provides Optimal Power Transfer
• Mini-ANL Fuse Holder With A 60 Amp Mini-ANL fuse
• 30% Copper CCA Wire

Get 10% off a RF License Plate & Deadskin Combo w/ Purchase!

For a limited time -while supplies last- get 10% of the Rockford Fosgate Black Powder Coated Stainless Steel License Plate Frame w/ 1 Sheet of Deadskin Bundle. This offer cannot be combined with other coupons or offers.

2.70

67757

1773

Rockford Fosgate Prime R250X1

$114.99

+

10% OFF

Rockford Fosgate RFDS-PLATE Sound Dampening License Plate Kit

$26.99

Special Price $24.29 ($26.99 if purchased separately)

Rockford Fosgate RFDS-PLATE Sound Dampening License Plate Kit

• (1) 3.3" X 10" Sheets
• Provides 40% more damping than standard non-embossed aluminum mat
• Silences panel vibration, reduces road and wind noise by up to 10dB over competition
• Butyl rubberbacking
• 1.5 mm thick

(Offer 1 of 2)

Combined Total Price

$124.73

You Save $3.25

Rockford Fosgate Audio Store

The PRIME Choice

The PRIME R250X1 amplifier is great mono amplifier in a compact chassis and respectable power output in any sound system. The R250X1 mono output design also makes it great for running a pair of 8" or 10" 4-ohm SVC subwoofers wired in parallel. The included Remote Punch Level Control corrects for any acoustic anomalies in the automobile environment, making certain that bass notes sound deep and rich.

Class-AB

An amplifier topology with the best of both worlds; a Class A preamp and Class B output stage. Class A topologies area great for sound quality but can require alot of current. Class B designs are great for power delivery. Amplifier designs utilizing a Class A/B topology reaps the benefit of great sound quality in the front-end (preamplifier stage) while delivering great power in the output stages (MOSFET drivers).

General Features:

  • Prime Series Class AB Monoblock Car Amplifier
  • RMS Power Rating:
    • 4 ohms: 150 watts x 1 chan.
    • 2 ohms: 250 watts x 1 chan.
  • CEA-2006 compliant amplifier
  • MOSFET power supply
  • Wired Punch bass remote level control included
  • LED power (green) and protect (red) indicators
  • Variable Bass Boost (0 to +12 dB bass boost at 45 Hz)
  • Soft Start Turn-on
  • Mono channel operation
  • 30 Amp In-line fuse is highly recommended
  • Heavy duty cast aluminum alloy heatsink for extreme heat dissipation
  • Variable low-pass filter (50-250 Hz, Butterworth 12 dB/octave)
  • Dimensions: 11-1/4"L x 6-3/4"W x 2"H
  • 8-gauge power and ground wiring is required for installation. Contact us for information regarding a discount on select amplifier kits when purchased together with this amplifier.
  • Authorized Internet Dealer
  • 1-year Manufacturer's Warranty

Product History:

Rockford Fosgate R250X1 thumbnail
(newest, current model)
Rockford Fosgate R250-1D thumbnail
(previous model, replaced by Rockford Fosgate Prime R250X1)
Rockford Fosgate R250-1 thumbnail
(previous model, replaced by Rockford Fosgate R250-1D)

Power Specifications - Subwoofer Channel

RMS Power @ 4 ohms
The RMS power rating is the measure of continuous power that an amplifier can output, or a speaker can handle. It is the most accurate depiction of real, continuous power that the industry has so far. If the final impedance of your speaker(s) or subwoofer(s) equals 4 ohms, this is how much power this amplifier will supply at that ohm level. The higher the RMS wattage, the more clean and loud your music will sound. The 5th channel on these particular amplifiers are usually dedicated for driving subwoofers.
150 watts x 1 channels
RMS Power @ 2 ohms
The RMS power rating is the measure of continuous power that an amplifier can output, or a speaker can handle. It is the most accurate depiction of real, continuous power that the industry has so far. If the final impedance of your speaker(s) or subwoofer(s) equals 2 ohms, this is how much power this amplifier will supply at that ohm level. The higher the RMS wattage, the more clean and loud your music will sound. The 5th channel on these particular amplifiers are usually dedicated for driving subwoofers.
250 watts x 1 channels

Amplifier Specifications

Amplifier Series
This designates the series of the amplifier. Many amps are available in a litany of different wattage and channel configurations, but maintain consistent features throughout the product line.
Prime (Rockford Fosgate)
Amplifier Class

An amplifier increases the power of the signal being fed to it by taking energy from its power supply and matching the signal but increasing its amplitude. Amplifiers use many different methods for converting these electrical signals and have been categorized into classes.

Class A/B: Greater than 50% of the input signal is amplified while the other percentage is “off”. These amplifiers have a small amount of current flowing through the output transistors all the time which almost eliminates crossover distortion. Class A/B has great sound quality but is not as efficient as class D. These amps are most commonly used to drive speakers.

Class D: Also known as switching amplifiers, class D amps have output transistors that are completely turned “on” or “off”. This means that when the transistors are on, there is almost no voltage across them but when they are off there is significant voltage but no current flowing through it which makes these amplifiers very efficient at the cost of sound quality. These amps are most commonly used to drive subwoofers.

Other Classes: You may see classes such as GH, bD, X, FD, etc. by some manufactures. These amplifiers tend to be either class A/B, D or a hybrid of the two but with improvements to their designs that can make them more efficient or offer better sound quality.

AB
Number of Channels
Each channel on an amplifier will power one speaker using a positive and negative cable. There are various types of amplifiers, each designed to power a certain number of speakers. Monoblock amplifiers, also known as single channel, are designed to power one or more subwoofers. These amplifiers often have very high power ratings. On the other hand, multi-channel amplifiers power multiple speakers, usually at lower power ratings. 2-Channel and 4-Channel amplifiers can power car speakers or low powered subwoofers. Occasionally you might see a 5 or 6-channel amplifier that can power speakers and subwoofers at the same time. The most common setup is a monoblock amp to run subwoofers and a 4-channel amp to run door speakers. Check out our Knowledge Base for more information.
1 - Mono
Total RMS Power Output
Total RMS power is measured by multiplying RMS power per channel by the number of channels, and is calculated at the lowest level of operating impedance.

RMS power is the amount of continuous power, measured in watts, that an amplifier produces is called RMS power. The higher the RMS figure, the louder and cleaner your music sounds.

The RMS output figure is much more accurate than the peak rating when comparing products.

250 watts
Maximum Input Gauge Size
This is the largest gauge wire that will fit into the power and ground terminals of this device. The lower the gauge number, the thicker the wire is. For example, a 4 gauge wire is thicker than an 8 gauge wire and thus has higher current carrying capacity. Always do your best to get this size wire to reduce the risk of damage to your components.
8 AWG
Minimum Impedance Unbridged
The lowest impedance the amplifier will handle when it is not bridged.
2 ohms
Minimum Impedance Bridged
The lowest impedance the amplifier will handle when it is bridged.
Not Bridgeable
THD at Rated RMS Power
The amount of change in harmonic content of the signal as it is amplified. A lower figure indicates less change and a more accurate amp. THD below 0.10% is inaudible.
1.0%
Speaker Level Inputs
Speaker level inputs are commonly referred to as high-level inputs and vice versa. This input type allows you to get your audio signal directly from the speaker wire in your vehicle, instead of using RCA cables. The advantage of this is factory integration, as most stock radios do not have RCA outputs to run amplifiers.
No
Preamp Outputs
Many amplifiers are equipped with RCA preamp outputs which pass the original music signal from the source to additional amplifiers. This is known as daisy chaining because the source connects to the first amp, and the first amp connects to the second amp, etc. The advantage to daisy chaining is you only need one 2-channel RCA cable to transfer the signal from the head-unit to the amplifier, and then one additional cable for each amp being daisy chained.
1 pair
Built-in Crossover

A crossover is a type of filtering system that permits only certain frequencies to play. A Low-Pass (LP) crossover allows only frequencies below its setting to get through which is good in the case of some subwoofers. A High-Pass(HP) filter allows frequencies above its setting to pass through, this is normally used on speakers.

When a crossover is set to FULL it means no filtering is added and the full frequency spectrum is allowed through the amplifier. Filtering is important because feeding a speaker frequencies it cannot reproduce effectively creates distortion.

Low-Pass (LP)
Low-Pass Crossover Frequency
The low-pass crossover frequency is typically used for subwoofers. It can be a fixed crossover point or a variable crossover range. A variable low-pass crossover allows you to select a specific crossover point which allows frequencies below the set crossover point to pass, while making frequencies above the set point gently or harshly roll-off, depending on the steepness of the slope.

The steepness of the roll-off slope is measured in dB/octave and refers to the rate of attenuation (lowering of volume) outside their pass bands.

50 - 250 Hz
Signal-to-Noise Ratio
This spec compares the strength of the signal to the level of background noise. A higher value indicates less background noise.
100 dB
Bass Boost
The objective of the bass boost is to get more kick out of your subwoofer. It is a circuit that emphasizes the lower frequencies at a given point. The bass boost should always be set first before setting the gain. This feature is known for destroying subwoofers and is commonly used incorrectly, so be cautious.
0 - 12 dB
Bass/Gain Remote
If the amp comes with a bass/gain remote you will be able to control the level of your bass from your dashboard. Typically bass remotes also include a 16-20 ft. wire for installation.
Yes
Fan Cooled
A great feature to have if an amp generates a large amount of heat. Cooling fans can help regulate the temperature to prevent the amp from overheating (burning).
No
Strappable
Some amplifiers can be "strapped" together in order to increase the output of a single audio channel. These amplifiers feature RCA preamp outputs, allowing you to pass the signal directly from one amp to the other to ensure consistency.
No
CEA-2006 Compliant
Amplifiers that have been tested to meet specific standards. When a car amplifier meets these standards, you can be sure that it will be able to produce the amount of power specified by the official CEA-2006 rating. Usually, these rating consist of the following items:
  • RMS Power
  • Signal-to-Noise Ratio

This rating applies to both external car amplifiers, as well as the amplifiers inside of in-dash stereos.

No
Hi-Res Audio Compatible
This feature refers to if the product is capable of Hi-Res Audio (HRA) playback.

Warranty and Return Policy

Parts Warranty Duration
1 year
Labor Warranty Duration
1 year
Warranty Provider
Manufacturer

Summary of Customer Ratings & Reviews

Rating Distribution

5 Star
50%
4 Star
50%
3 Star
0%
2 Star
0%
1 Star
0%

Average Attribution Rating

Durability
4.5
Value
4.5
Features
4.0
Design
4.5
Usability
5.0
Garcia

los angeles ca

Overall
Durability
Value
Features
Design
Usability
Great purchase

March 7, 2014

this amp does exactly what it says. love the quality and sound.

25 of 30 found this helpful

Was this review helpful to you?

David the Crane Guy

Uniontown, PA

Overall
Durability
Value
Features
Design
Usability
Awesome amp

January 5, 2014

I have had this amp for a few weeks now. I have it installed under the seat of my F-250, paired with a 8" Kicker, in 2-ohm mode. I have not had any problems with this amp what-so-ever. Awesome product, awesome price. It gets a little warm, but is not even close to overheating.

The only fault I found with this amp is the inability to switch between low pass/high pass.

21 of 27 found this helpful

Was this review helpful to you?

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Browse 3 questions and 5 answers
Hide answersShow all answers | Sort by
Why did you choose this?
Sonic Electronix Store
I picked SonicElectronix because they seem like one of the few remaining independent shops.

Picked this amp based on the Amp Selector tool. Really helpful so I just picked up another RF 4 channel amp.

So far the amp has been just fine. I dont compete so I wanted quality and price: Sonic and RF fit the bill.

NF/NA
David E on Jan 27, 2015
best value amp for the JL 12W0v3-4
Stephen S on Dec 15, 2014
what 10" subs do i need for this amp? how do i wire them?
A shopper on Mar 30, 2015
Best Answer: Hello,

The Rockford Fosgate Punch P1S2-10 is the most common match with the amp, and wouldn't require any special wiring, assuming you wish to go with one sub. Considering you typed "subs" (plural) , then two Rockford Fosgate PRIME R1S410 would be the option, and you would simply wire them in parallel to a 2ohm load. There are MANY guides (including the manual) that will show you how to accomplish that.
Reply · Report · Rick MStaff on Mar 31, 2015
· Add Answer · I Have This Question Too (0)
will I need a crossover?
A shopper on Nov 29, 2014
Best Answer: Hello ,

Not necessarily; The R250X1 has its own LPF [Low Pass Filter] to filter out undesirable high frequencies.

http://www.sonicelectronix.com/pictures_new.php?id=67757&picture_id=1306400

Although it lacks a Subsonic, a crossover may be an unneeded expense.
Reply · Report · Customer SStaff on Nov 29, 2014
· Add Answer · I Have This Question Too (0)

Product Summary

Manufacturer

Model Number

R250X1

UPC

780687340568

Weight

6.50lbs

Internal SKU

r250x1

Internal Product ID

67757

Sonic Electronix Wiring Guide

Wiring Diagram Legend

Warning: The image depicted shows the resistance change when wiring multiple subwoofer terminals. Please refer to your subwoofer's owner's manual for the proper wiring of its terminals. Sonic Electronix, Inc. is not responsible for damage caused to your audio system or vehicle due to improper installation. Please call tech support at 1-877-289-7664 if you require additional assistance.

Product Name: Rockford Fosgate Prime R250X1

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