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Rockford Fosgate PRIME R500-1

500W Max PRIME Series Monoblock Amplifier

Discontinued
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Rockford Fosgate R500-1D

OUR PRICE: $179.99

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  • PRIME Series Single-Channel Monoblock Class A/B Car Amplifier
  • RMS Power Rating:
    • 4 ohms: 320 watts x 1 chan.
    • 2 ohms: 500 watts x 1 chan.
  • MOSFET Power supply
  • Power and protection LED indicators
  • Tuned Bass EQ (0-12 dB bass boost at 45 Hz)
  • Single-channel operation
  • 1 Pair of Preamp RCA outputs
  • Heavy duty extruded aluminum alloy heatsink for optimal heat dissipation
  • RCA level inputs
  • Screw terminals
  • Variable low-pass filter (40-130 Hz, 12 dB/octave)
  • CEA-2006 compliant amplifier
  • Frequency response: 20-250 Hz
  • Dimensions: 16-5/8"L x 7-5/8"W x 2-1/2"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.
  • 1-year SonicElectronix.com warranty

Product History:

Rockford Fosgate R500X1D thumbnail
(newest, current model)
Rockford Fosgate R500-1D thumbnail
(previous model, replaced by Rockford Fosgate R500X1D)
Rockford Fosgate R500-1 thumbnail
(previous model, replaced by Rockford Fosgate R500-1D)

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.
320 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.
500 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.
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.

500 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%
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.

40 - 130 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.
80 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
Fuse Rating
The amperage and the number of fuse(s) an amp requires.
30A x 2 
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.

Yes
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.

Specials with this Item

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Warranty and Return Policy

Parts Warranty Duration
1 year
Labor Warranty Duration
1 year
Warranty Provider
Sonic Electronix

Summary of Customer Ratings & Reviews

Rating Distribution

5 Star
79%
4 Star
14%
3 Star
2%
2 Star
3%
1 Star
2%

Average Attribution Rating

Durability
4.7
Value
4.7
Features
4.6
Design
4.6
Usability
4.7

Eric

Grayling, MI

Overall
Durability
Value
Features
Design
Usability

Great amplifier, especially for the price

July 5, 2010

This amplifier is top-notch, I would buy it again in a second. It comes with a birth sheet, which shows that its underrated by 35 watts RMS. You get exactly what you pay for from RF: a quality, well-built amplifier that performs great. I would recommend this amp to anyone!

7 of 7 found this helpful

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Austin

Coeur d' Alene, ID

Overall
Durability
Value
Features
Design
Usability

Impressive Amp for the price!!

July 3, 2010

I just put in this amp with a single 12" Kicker CRV. It pushes it very well and does not heat up at all. The base control nob is also a very great feature this amp has. Went to go pick up a new fuse at aspen sound and this amp ran for $250 there. Sonic Electronix has the best deals and will get some bump in your truck fast.

5 of 5 found this helpful

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Mike

Sheridan,wy

Overall
Durability
Value
Features
Design
Usability

The best brand out there

July 26, 2010

Rockford fosgate has never let me down. Every product I bought was rockford and it sounds amazing. The amp powers my p3 rockfords which makes them really thump.

4 of 4 found this helpful

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Mend

NY

Overall
Durability
Value
Features
Design
Usability

Pleased

June 24, 2009

Bought this from somewhere else but I hate making accounts just to review a product. This things is pretty big but does the job. I've always been a fan of Rockford even though everyone talks about them not being what they used to be but after reading many reviews on their new lines, they seem to be making a comeback. This amp is visually gorgeous with the dark brushed aluminum that matched my interior perfectly and was a little smaller than I thought based on reading the measurements. I've had it for only a day but I've put it through some paces in the 2 hours I've used it and it works very well. Very few reviews anywhere on the net post birth sheet/ certificat numbers and that bugs me, I feel its vital to the purchase. My amp cam with just a plain looking sheet and its has its actual watts for only a 2 ohm load which it doesnt even state, It just has the serial number, stamp and actual wattage of 553! Nice choice of settings, quality feel and look, excellent sound out of new 10"W3v3-2. This amp is sort of over kill but I have the gain set to my headunits output voltage and it sounds great. My sub loves the power coming out of it, since I have it down, its getting very clean power, making it extremely accurate. I had the gain full blast at point for about 20 mins and the amp felt what I would call "very warm". From my experience and knowledge of the brand, RF typically run warm/hot but it doesnt effect their performance. Running for 1 hours at medium volume with gain set to 5 (my head units output voltage) the amp barely felt luke warm, very nice. Anyway I give this 2 thumbs up, I love rockford amps, I used their 4 gauge amp kit (the best you can get, worth the coin) with this so its getting optimal power flow, grounding and comes with twisted rca's. This obviously leads to stable voltages and quality signals which are KEY when dealing with electronics, car audio in particular. Get this if you need 500 clean watts of power @ 2 ohms.

4 of 4 found this helpful

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Tee Mat

lufkin, Texas

Overall
Durability
Value
Features
Design
Usability

Rockford fosgate 500

January 24, 2011

This amp is the absolute truth.. For what they are selling it for is a absolute steal and you get a top of the line amp that will push your subs or subs to it's max. I have it hooked to a 1200 watt Sony Xplode sub an it pushes that one sub to the max an I don't even have the amp turned all the way up an it the amp doesn't overheat with long periods of use just make sure to keep the trunk somewhat ventilated on those hot summer days when using for long trips to keep it from getting to hot an shutting off for a few seconds.

2 of 2 found this helpful

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Charles

Missoula, MT

Overall
Durability
Value
Features
Design
Usability

great amp for the price

July 13, 2010

I think this amp is bang for your buck. Running Orion XTR Pro154 15" dual 4ohm sub wired at 2 ohms and can play loud all day. Gets hot but never shuts off. Going to buy one more of these amps to power one more 15.

2 of 2 found this helpful

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brandon

Chicago

Overall
Durability
Value
Features
Design
Usability

This is a great amp

May 25, 2010

I got 2 12' kicker cvr's and this amp is tiny but pushes them hard . a little to hard and I have the bess down to !! trust me if your the one who says that U want a bang but not to to to much ! then this is it!!!!! I also have a hifonics 2610 and i would rather use the rockford because it pushes them with the perfect hit. the hifonic blew my last 2 pioneers that ran on the same wattage as the kickers. Great deal to!!

2 of 2 found this helpful

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Santana

San Diego, Ca

Overall
Durability
Value
Features
Design
Usability

Typical of Fosgate Amps

May 21, 2010

Excellent product for only 150 dollars. I've had mine for almost a year and it's still pushing! Even on these hot California days where it gets pretty hot in my mustang no problems at all. You should definitely get this product! I would say the only bad thing is it's kinda long so it might be a problem installing it in smaller cars..I had to screw it in on the back of my back seats haha but outside of that no problems at all!

2 of 2 found this helpful

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Joker

El Dorado, AR

Overall
Durability
Value
Features
Design
Usability

Rockford Rocks!

May 20, 2010

The birth sheet on this amp has it at 553 watts RMS @ 2 ohm. I have this amp running two Rockford P2D210 and I am scared for their life. If you want an amp that you get your moneys worth out of buy this one.

2 of 2 found this helpful

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DJ After Hours

Phoenix, AZ

Overall
Durability
Value
Features
Design
Usability

Greatest Investment Ever

April 22, 2010

OMG! Ive been in the car audio game for a while... Have had many different subs and amps and nothing was to my satisfaction. Super Duper Bass. I have this amp paired with just one 12" alpine type-r in a ported box and it is the best it has ever been. RIDICULOUS.

2 of 2 found this helpful

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Toe Joe

Clarksdale, MS 38614

Overall
Durability
Value
Features
Design
Usability

Great amp and good price!

April 22, 2010

Amp is very very very powerful! I have this amp on 2 12's CVRs 2 ohm! The only problem is that is heats up! But overall this thing is booming! I am only running the amp halfway and it is crazy beatin!

2 of 2 found this helpful

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Tommy

Jacksonville, FL

Overall
Durability
Value
Features
Design
Usability

Good Amp

April 14, 2010

Really Good amp. Looks clean and pushes a good amount of power to the subs. Overall i would say this is a really good buy!

2 of 2 found this helpful

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ZAchary

ocala, FL

Overall
Durability
Value
Features
Design
Usability

Great value!!

March 20, 2010

Would definitely recommend this amp. Got it on 2 p312D4s and these things slam like crazy. Even though I am only pushing 300 watts to each speaker they are really loud no lie. Buy it!

2 of 2 found this helpful

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JUN THE PIMP

CALIFORNIA, HANFORD KT

Overall
Durability
Value
Features
Design
Usability

fosgate

March 15, 2010

cant go wrong with fosgate amps.. best amps ever. even rf amps with low watts. this 500.1 amp hits harder then most 1500.1 other brand amps. i have this 500.1 pushing 3 kickr cvr's. couldn't ask for more.

2 of 2 found this helpful

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Anthony

Yuma, AZ

Overall
Durability
Value
Features
Design
Usability

Sweetness

February 15, 2010

I just recently bought this amp for my RF PD415, the sound quality was just mind blowing and i'm only runnin 450 w/ 40hz. i highly recommend this amp if ur looking 4 an easy system 4 rite now an a bit tight on money.

2 of 2 found this helpful

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Eatie F. Baby

MO.

Overall
Durability
Value
Features
Design
Usability

Good Amplifier

January 13, 2010

This amp is good for its price. I was needing a amp but short with money so i bought this one. I had two rockfordfosgate P3D412's and this amp. The bass was so clean and fairly loud! I recommend this amp if short on cash.

2 of 2 found this helpful

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eddie fonzareli

el cajon, california

Overall
Durability
Value
Features
Design
Usability

TOTALY PLEASED

December 28, 2009

i'm a fan of RF. long lasting equipment. i just installed this over the weekend. it's pushin 2 12" nicely with minimum gain. beautiful exterior with a certified rating of 550 i think it said.

2 of 2 found this helpful

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Alex

Nebrask

Overall
Durability
Value
Features
Design
Usability

Nice amp

October 3, 2009

This is a pretty sweet amp. It works great with my 12in Orion sub, lacks no power. The best thing is the remote power adjuster.

2 of 2 found this helpful

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Ray

Washington, DC

Overall
Durability
Value
Features
Design
Usability

Great Quality Sound

October 2, 2009

The Rockford Fosgate R500-1 amplifier delivers an awesome, yet not too grimey sound. For a pure quality sound with the right amount of kick, pick up the Fosgate R500-1.

2 of 2 found this helpful

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Tyson

fort dodge, IA

Overall
Durability
Value
Features
Design
Usability

Powerful Amp

August 13, 2009

Great Amp Lots Of Power Pushes My 2 12's Easy. Love The Power Great Price Also

2 of 2 found this helpful

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Accessory Tools and Products

Accessories added

NVX XKIT82 8-Gauge Wiring Kit

In case you didn't know, NVX has top notch wire and this kit has everything you need!

Your Price $49.99

Rockford Fosgate RFK8I 8-Gauge Wiring Kit

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

Your Price $49.99

Belva BAK82

Complete 8 Gauge Amplifier Wiring Kit with 2-Channel RCA Interconnects

Your Price $17.99

NVX XBG3PK 1/0 Gauge OFC Big 3 Upgrade Kit

Comes with everything you need to upgrade your power and ground wire.

Your Price $79.99

Kicker Big 3 Package 1/0 Gauge Big 3 Upgrade Kit

Get all you need including wire cutters to upgrade your power and ground wire.

Your Price $149.99

Belva BBG3KT CCA 1/0 Gauge Big Three Kit

Features everything needed to upgrade factory power and ground wire.

Your Price $39.99

StreetWires FB4

4 AWG / 4 Gauge Firewall Bushing

Your Price $6.95

NVX XDBU4 - Top of the Line!

Distribution Block with Two 1/0 or 4 AWG Inputs and Four 4 or 8 AWG Outputs

Your Price $17.99

Professional Installation for your Car Power Amplifier

Covers labor charges through our professional installer network.

Your Price $89.99

Kicker KI24 K-Series RCA Audio Interconnect Cable

4 Meters (13 ft.) 2-Channel K-Series RCA Audio Interconnect Cable

Your Price $16.95

NVX XIV25 V-Series 2-Channel RCA Cable

16.4 ft of V-Series 2-Channel RCA Audio Premium Interconnect Cable with Dual Twisted Pair Hyper-Flex Technology

Your Price $11.99

NVX XWS1225 12 AWG Speaker Wire

25 ft. of True 12 Gauge 100% Copper EnvyFlex Speaker Cable/Wire

Your Price $39.99

NVX XWS1625 16 AWG Speaker Wire

25 ft. of True 16 Gauge 100% Copper EnvyFlex Speaker Cable/Wire

Your Price $13.99

Belva BBSW127 12 AWG Speaker Wire

12 Gauge 7 Meter (23 Ft) Speaker Wire (CCA)

Your Price $14.99

Belva BBSW167 16 AWG Speaker Wire

16 Gauge 7 Meter (23 Ft) Speaker Wire (CCA)

Your Price $12.99

The Install Bay IB-CAP1F

True 1.0 Farad Car Audio Capacitor for up to 1000W Max

Your Price $37.99

e2 ECAP1 by Scosche - Mid-Level 1 Farad

Digital 1.0 Farad Car Audio Capacitor for up to 1000W Max

Your Price $49.99

SMD DD-1 Distortion Detector

Set the gain of an audio amplifier quickly and accurately

Your Price $149.99

Scosche SPL Meter SPL1000F

Handheld boomSTICK measures your SPL range from 60 to 135 dB

Your Price $21.99

AutoSound 2000 CD-102

High Frequency Test CD specifically designed for the set-up and evaluation of sound system imaging and placement.

Your Price $11.99

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Product Summary

Manufacturer

Model Number

R500-1

UPC

780687328818

Weight

10.00lbs

Internal SKU

r5001

Internal Product ID

17368

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 R500-1

  • Rockford Fosgate PRIME R500-1
  • How to Install a Car Amplifier