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Rockford Fosgate Prime R500X1D

500W RMS Monoblock Single Channel Class D Prime Series Amplifier

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$149.95

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Save 25% on a 4 Gauge Amp Kit with Purchase!

You will need an amp kit to install your amp, and the Belva BAK42 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.

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Rockford Fosgate Prime R500X1D

$149.95

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Belva BAK42

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Belva BAK42

• Complete 4 Gauge 2-Channel Amplifier Installation Kit
• Designed Specifically For Car Audio Systems Up to 1000 Watts RMS
• Premium Power and Ground Wire Provides Optimal Power Transfer
• 30% Copper CCA Wire

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General Features:
  • Prime Series Class D Monoblock Car Amplifier
  • RMS Power Rating:
    • 4 ohms: 300 watts x 1 chan.
    • 2 ohms: 500 watts x 1 chan.
  • 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
  • 50 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)
  • CEA-2006 compliant amplifier
  • Dimensions: 8-1/2"L x 6-3/4"W x 2"H
  • 4-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 Prime 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.
300 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.
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.

D
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.
4 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
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.
Yes
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
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
Fuse Rating
The amperage and the number of fuse(s) an amp requires.
50A x 1 
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

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
86%
4 Star
8%
3 Star
5%
2 Star
0%
1 Star
0%

Average Attribution Rating

Durability
4.8
Value
4.9
Features
4.6
Design
4.7
Usability
4.8
Jordan

Charleston, SC

Overall
Durability
Value
Features
Design
Usability
Rockford Fosgate has great power!

January 9, 2014

I bought this amp to upgrade from a 300 watt RMS Kicker amp. I enjoyed the Kicker amp, it could shred, and reliably too. However, this review isn't about the Kicker amp, it's about the Rockford Fosgate R500X1D. I installed the Fosgate and powered a 12 inch Polk, which burned it up. Then powered a Alpine 12 inch, which it nearly burned it up. This amp can REALLY push power! When you pair it, DO NOT just wing it, do not just turn the volume up to 3/4 and turn the gain up to 1/2. Any distortion pushed from this amp will kill a subwoofer. Meter it and O'scope it (or DD1 it). But when you set this baby up right, this amp ROCKS! I have it set up with 2 Kicker 12 inch Subs in a premade Kicker enclosure, and it kicks! I would definitely recommend this amp.

27 of 43 found this helpful

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Charles

punta gorda, FL

Overall
Durability
Value
Features
Design
Usability
R500X1D

May 8, 2014

Decent amp for the price.I thought i enjoyed this amp,until i heard my sub through a different amp. I am changing out all my stuff for JBL (just because. no real reason...at first)when i hooked my 12 inch P3 to the JBL amp it was clearly a cleaner sounding bass note! For the money a good amp. If you have a little extra coin go for a different option.

26 of 44 found this helpful

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Joe

Austin, TX

Overall
Durability
Value
Features
Design
Usability
1st Timer

February 19, 2014

This is my first amp, so I have only second hand prior knowledge, but it drives my RF 10" sub really well. It was super easy to install and the class D doesn't get very hot at all so mounting options abound. All in all I highly recommend this amp if you're looking for an affordable way to drive a sub. It won't rattle the neighborhood, but it does get a few looks at the stoplights!

(I don't know about the durability, I'm sure it's fine, but it's new so I can't can't comment on that one. )

21 of 35 found this helpful

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SmegHead

Sacramento, CA

Overall
Durability
Value
Features
Design
Usability
Good,cheap, powerful amp

February 13, 2015

Good amp at a great price. Mine birthed at 637rms. Ran it bumping hard for 2 straight hours without a hiccup.

15 of 24 found this helpful

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Fred

APO, AE

Overall
Durability
Value
Features
Design
Usability
Speechless Quality

September 18, 2014

Install went nice, when I first installed it it was on an old Sony Xplod 1200W sub, which at 4 ohms isn't bad, but when I put it on my twin Kenwood 3013PS 12" 400W RMS subs... it punches and punches and it's not even maxing out the subs themselves. I'm impressed on the power output, the birth sheet stated 664W RMS from the factory at 14.4V. Over all, well worth the purchase.

22 of 38 found this helpful

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jacob

Vancouver, WA

Overall
Durability
Value
Features
Design
Usability
Small but BIG Power

December 6, 2013

just hooked up this amp to two p2d2 8'' subs from Rockford, which contrast it nicely. when i first pulled it out of the box i was surprised on how small the thing was! which is great for small vehicles, in my case a 94 Nissan hard body. would recommend this sub to any one that ones a quality product at a low cost.

17 of 29 found this helpful

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Michael

SIOUX CITY, IA

Overall
Durability
Value
Features
Design
Usability
Great budget amp

December 21, 2014

I already own a 500.1bd and 700.1bd RF punch amps for my two cars. I wanted another for my wife's vehicle. Forgot to mention we had a RF 300.1 in hers. I recently bought a Alpine sws 12d4 for her to replace an old kicker first gen crv. This is a single sub in a prefab ported box. Just wasn't happy with the 300.1 anymore, not enough power.I read the reviews on the 500x1d and was hopeful that it would be a good fit for her alpine without spending 200+. Got the amp Saturday and installed it. I have to say that it looked even better than the pictures. Also that it is small but heavy. Cool. Plenty of power with the sub wired to 2ohms. I only have the gain set at half. I'm sure we will have this set up for a long time. It bumps now and sounds great. Since I have only had the amp a couple days I'm giving durability 4 stars.

17 of 30 found this helpful

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Matt

Newport, AR

Overall
Durability
Value
Features
Design
Usability
Solid amp for a great price

May 11, 2014

I have this running the newest P3 15 at 2 ohms and does it's power then some. Awesome budget pair up, the subs seeing 3 cu^ft at 35 hz in a L port design box. Loud and clean, this amp beats the crap out of that P3 15. The birthsheet said 637 rms. Originally I've always ran punch amps and honestly I thought that I downgraded because of budget purposes. But I sure was wrong. It sounds great, it gets lukewarm at the most after about an hour play time at full tilt. It was kinda difficult to get 4 gauge wire to fit but it fit barely on a Rockford 4 gauge kit. I guess that's the only complaint but besides that this amp is absolutely awesome. Especially for what you give for it. You'll notice when you open up the box, this amp is tiny! But made of a high quality construction, it's solid. Everything is oscoped, perfectly clean and dialed in. I highly recommend this amp for the value and performance. If your planning on having a 600 rms setup, go for this amp. It's cheap, reliable, and exceeds it's rating. I've had it for 1 1/2 months, and it's had a lot of play time full tilt for extended periods of time. Highly recommend it.

17 of 30 found this helpful

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Ryan

Menifee, CA

Overall
Durability
Value
Features
Design
Usability
Great Value

February 3, 2014

Installed in my 13' Camaro SS along with a Pioneer 10" sub and really surprised of the quality. I spent about $350 for everything and it sounds much better than GM's $1200 MTX add on. Great amp!

18 of 32 found this helpful

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Brennen

Newark, NY

Overall
Durability
Value
Features
Design
Usability
Awesome amp

April 16, 2014

Like kicker amps the rms power out put is slightly under rated and comes with a certificate. I have it powering 2 10" diamond audio subs at 200 rms a piece wired together at 2 ohms at 400 rms together and the amp putting out 500 rms at 2 ohms and it puts out pure perfect power and sound awesome

20 of 37 found this helpful

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Abel

Belen, NM

Overall
Durability
Value
Features
Design
Usability
Fosgate Amp

February 4, 2014

I really love the amp. had one before but not as good, and sleek design as one that this one has. Always been a fan of Rockford Fosgate!

16 of 29 found this helpful

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Matt

Peachtree City, Georgia

Overall
Durability
Value
Features
Design
Usability
Great Amp

March 19, 2015

I purchased this amp over a month ago and I've fallen in love with it. It is powering my single 15 inch Alpine Type S and I have nothing but positive things to report about it. I would recommend this amp, great buy for the money.

7 of 12 found this helpful

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Masonjb

Pelican Rapids, MN

Overall
Durability
Value
Features
Design
Usability
Great Product

September 17, 2013

I purchased this amp to power two 12" Rockford Fosgate P1's. I got it hooked up and it pounds hard! Incredible amp for the price, I would recommend to anyone looking for a great deal at a great price.

12 of 22 found this helpful

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chris

astoria, OR

Overall
Durability
Value
Features
Design
Usability
great little amp

September 3, 2013

This amp rocks. I got this same amp and an earthquake sound 10 inch sub a week ago and it hits hard for a 10. This amp is really cheap but still great quality. Might even hook my friend up with one. I have it's big brother the 1200d pushing two kicker 15s hard. They are hitting around 140db. Great amp both of them.

6 of 10 found this helpful

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Mas

Las Vegas, NV

Overall
Durability
Value
Features
Design
Usability
Its okay.

March 15, 2015

I own this little amp and matched along with 1 RF P3D410 500 RMS / 1K Peak woofer in a ported box. Brand new, it sounded legit for the budget but after the break in period was over it didn't perform as it once was expected. Sure it hits but there's something that feels off. I have it wired properly for sure and the power is being supplied by a Optima Yellow Top battery along with a 160a alternator but it's just not hitting as hard. Maybe it's the ported sub box I bought from Amazon. Don't know but I'm going to try a sealed box to see if makes a difference.

7 of 13 found this helpful

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jeromey

pasco, WA

Overall
Durability
Value
Features
Design
Usability
Awesome power!!!!

September 28, 2014

Great amp for a Great price!!!! I have this amp pushing a couple rockford p2's and they sound great in my 2013 Silverado.

17 of 33 found this helpful

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ry bread

Middleton,WI

Overall
Durability
Value
Features
Design
Usability
UNREAL!!!!!!!

May 16, 2014

This amp is straight up amazing. First off I would like to say that this amp came with a certificate of 641 rms!!!! This thing is sooooooooooo much better than my cxm1100 boss amp and drives my 15 cvr to unreal levels. I give a double thumbs up. Would and will buy again if needed.
Not to mention its size is incredible!(small but powerfull)
All metal!
I could go on!

17 of 33 found this helpful

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Alex

Wichita, KS

Overall
Durability
Value
Features
Design
Usability
Great amp, better price

April 8, 2014

I really like this amp. I bought it for a 2013 ford F-150 super crew with the upgraded Sony system because it was lacking bass. It is paired with 2 RF prime R 2's. Great output and sound quality.

Pros: runs cool, great power from small sized amp
Cons: none yet

19 of 37 found this helpful

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Dylan

Southern VA/Satellite Beach, FL

Overall
Durability
Value
Features
Design
Usability
Stage 2 for Stage 1+ prices!

January 30, 2014

This Rockford Fosgate R500X1D is an amazing piece of hardware! I had a previous gen (R500-1, which was 2 previous gens behind) that was a Class A/B amp and the birth sheet was around 524RMS @2Ohms. That amp was OKAY until it started to over heat even when set with a DMM below the correct gains. This amp is literally half the size (just bigger than a CD case) and is the more efficient Class D which allows for better input-to-output power. This 500w amp was birthed at 638RMS @2Ohms and let me tell you...that's no joke for SPL!

I have a Pioneer TS-W1200PRO (12" DVC 450RMS handling) in an AE sealed box @1.08cu/ft is loud! I have this amp DMM tuned to about 475RMS after I broke in the sub and it's enough to feel the air moving with 3/10th bass boost. I can't be more pleased with this little thing, at least until I get my next sub that can handle the power (google SoundQubed). I've ran this amp at full (tuned) levels for a trip starting in NC and ending in upstate NY (10 hours) and not once clipped/got hot.

Pros: Definitely underrated power specs, very small and can fit in most any corner, Control knob comes in handy when a 5-0 pulls up at a light with the windows down, uses allen wrenches for wires (and comes with them), Stays very cool.

Cons: No subsonic filter (thus 4 stars), the remote has a VERY bright blue LED and can be bothersome at night...but I'm going to tint it or mod it to control another LED circuit to flash with the beat in the hatch.

10 of 19 found this helpful

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Kirk

Tuscumbia, AL

Overall
Durability
Value
Features
Design
Usability
Hits hard and runs cool

January 22, 2014

I put this amp onto a pair of Pioneer TS-W254R subs and build a custom box. I installed this amp in my 16 yr old sons car. This setup really hits hard and you can imagine how he plays it. Its been installed for about 2 months and have not had one minute of trouble. The amp plays well and runs really cool even when really pushed.

11 of 21 found this helpful

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Ryan

East coast

Overall
Durability
Value
Features
Design
Usability
Happy and impressed.

December 27, 2013

An absolute steal for the price. I have this amp wired to 2 ohms at 500rms on a fosgate punch p2d4 10" and it punches alright. I only have the gain set at half way. At first I had it installed to a stock stereo, what a waste. Now I'm running a pioneer 3500bhs and it has phenomenal sound, punch, clarity and rumble. It has more than enough power. Very happy and Sonic matches prices for less.
Will always shop here in the future.

19 of 37 found this helpful

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edrick

Puerto Rico

Overall
Durability
Value
Features
Design
Usability
great amp.!!

September 24, 2013

This amp it's rated at 500 rms at 2 ohms..but with the birth sheet says about 651 rms at 14.4 v.. my car its delivering 13.5 v its about 624rms...not to bad for 2 12's Rockford P1S412..they hit hard the 2 of them with this amp at 2 ohms and a custom ported box tunned at 33 hz. I recomend this amp to any one its looking for a budget amp..for the price.!! ROCKFORD FOSGATE ALL THE WAY.!!

9 of 17 found this helpful

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wheelsspinnin_imagrinnin

Nampa, ID

Overall
Durability
Value
Features
Design
Usability
Great amp!

July 10, 2013

For it's size, this amp pack a prime punch! I run a pair of 12's off this in 2 ohms. The bass hits hard, shakes my mirror, and allows quarters to be bounced off my trunk. While you won't be breaking any windows with this, it has set off some car alarms in parking lots.

6 of 11 found this helpful

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Kameron

Humble, TX

Overall
Durability
Value
Features
Design
Usability
Powers my 12's hard!!!

March 30, 2015

I love this amp. If your looking for a amp that doesn't cost that much but is one of the best brands, this is the one!!!

6 of 12 found this helpful

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Remus

Raleigh, NC

Overall
Durability
Value
Features
Design
Usability
Amazing amp

November 21, 2014

Definitely blown away by this amp. Its very compact, never gets incredibly hot, and pushes my 2 12in Kickers hard.

5 of 10 found this helpful

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david

queen creek, AZ

Overall
Durability
Value
Features
Design
Usability
Big power small package

June 22, 2014

Used this amp in a 2010 f150 it's very small about the size of a DVD case. Using it at 4 ohms at 1/4 gain with a shallow 19 and it pushes clean loud power. I highly recommend for small spaces. A+ Job

16 of 32 found this helpful

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Eddie

Minnesota

Overall
Durability
Value
Features
Design
Usability
Lots of Power for the Price!

May 13, 2014

I purchased this amp and have had it in my 2005 Impala for 1 month now. It is powering 2 12" MTX Terminators, and it slams! Although the specs online say the amp is rated for 500 Watts RMS, my amp came with a spec sheet stating that the amp was tested and provided 642 watts of clean power at 2 ohms. For the price, it is one of the best amps available.

The amp was very easy to setup. The only issue I had was when I was trying to fit the 4 gauge power and ground wire into the terminal block on the amp. I managed to get it to fit, but the terminal blocks are angled down. Due to this, it is difficult to get the wires to fit once the amp is mounted to the sub box. This is a minor complaint, because once the amp is connected, it is easy to tune and it works great.

Also, the included dial works very well, and is useful when you simply want less bass without having to adjust the gain dial on the amp.

Overall, this amp works very well. I have not found anything better for the price. It provides much more power than it is rated for, never gets warm, and is built very well. Personally, I highly recommend it.

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jiggy fly

Albuquerque, NM

Overall
Durability
Value
Features
Design
Usability
Rockford Fosgate is awsome

January 9, 2014

Just bought this amp for a p3d415 and it sounds great! wired sub at 2 ohms and im doing 14.8 v so amp is pushing at least the 500 watts rms. the birth sheet said 622. this little amp is way worth it! Rockford Fosgate is the s*** get up on it!

24 of 48 found this helpful

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Dick

Valencia ca

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Durability
Value
Features
Design
Usability
THIS IS AN AWESOME AMP!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

October 30, 2013

I have this thing hooked to an NVX 10 and i listen to all types of music and it just works no issues I have an hour commute and it does not overheat or miss a beat Thanks Sonic and Allen for all your help

13 of 26 found this helpful

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DisturbedOne

Kokomo, IN

Overall
Durability
Value
Features
Design
Usability
Under Rated AMP. this little thing is loud and runs cool.

September 1, 2013

i didnt want much. i wanted something 500 watts RMS. this is my first fosgate amp and I'm blown away! my birth sheet says 651 Watts RMS. i am pleased that i bought a quality product.

4 of 8 found this helpful

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Jacob

Bixby, OK

Overall
Durability
Value
Features
Design
Usability
good amp for the price

March 1, 2015

Good amp for the price put it on a late model p3 10 in a ported box sounds great good power to the sub too!

9 of 20 found this helpful

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Cooper

Santa Barbara, CA

Overall
Durability
Value
Features
Design
Usability
Awesome AMP great price!

March 11, 2014

This is a reputable brand that is known for there high quality products. So I bought it. Paired it with a jl w3v3 10" and it sounds awesome! I would definitely buy another Rockford amp. Just make sure it fits well with the wattage of your sub and you're golden!

12 of 26 found this helpful

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Sound Fanatic

NEW ORLEANS, LA

Overall
Durability
Value
Features
Design
Usability
Super power in a small package

March 5, 2014

I have this amp powering a single Rockford Fosgate P3D4-12, this amp will put some amplifiers twice it's size to shame. All i can say is pure undistorted vibrate your azz power. Way underated i cant turn the gain half way because something will give either my back glass or my front no BS, whoever doesn't believe me come sit in my 07 accord. For now i have the sub in a prefab sealed box, but will soon get a custom built to specs ported enclosure. Love Sonic, love their service, and prices will be ordering much more soon, thanks.

7 of 16 found this helpful

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Seth

jackson, MO

Overall
Durability
Value
Features
Design
Usability
amazing amp

December 21, 2013

I have this amp powering a Rockford fosgate P2D4 12, and its amazing. great power. I have it on 4.5 of 11, and im afraid to turn it up any more. this amp never gets hot, even after hours of driving. great amp. this is a must buy amp!

4 of 10 found this helpful

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Matt

Florida

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Durability
Value
Features
Design
Usability
Bomb Proof Amp

October 17, 2014

I wasn't going to review this amp, but I just feel like it deserves some recognition. I'm buying a NVX JAD1200.1 to replace this Rockford, so I decided to smoke test my R500X1D. I wired this amp down to 1 ohm on 2 Sound Stream T7 10's. I just went on a 30 minute ride blasting Decaf through it at max volume (probably clipping a little). The amp didn't even get warm! Never went into protect mode. Subs didn't get warm. No hiccups. Bottom line: Rockford makes awesome amps.

I'm sure they don't recommend wiring this little guy down to 1 ohm, but it's probably over 3 ohms at all frequencies after box rise anyway. The amp has never given me any problems. It's very solid and feels well built. Even on really hot days in Florida I don't feel bad about blasting away for hours on end. It's not anything crazy, but it does bang pretty nicely for an amp rated at 500 watts.

6 of 15 found this helpful

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D.J.

SPOKANE, WA

Overall
Durability
Value
Features
Design
Usability
Extremely happy and impressed with Rockford's power

September 24, 2014

At first, I was skeptical about buying this amp due to the fact that I had never seen or heard a rockford amp in person before. But after I installed the amplifier with ease, I was astonished at how well this amp drove my subwoofers. I have it powering 1 Rockford P3D4-10 and it bumps. I have this amp and sub side by side with a second P3D4-10 powered by a Kenwood 7005ps 5 channel amp and when the sub powered by the ken wood amp starts to distort, the sub powered by the rockford amp stays strong without the gain turned up all the way. Extremly impressed with this amps capabilities and power and very happy with the sound. The pass-thru RCA ports on the amp are a bonus as well. I would definitely recommend this!

19 of 41 found this helpful

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joseph

orange park, FL

Overall
Durability
Value
Features
Design
Usability
Works great

March 22, 2014

Not a whole lot to say here. Excellent product thats is very well made (typical for Rockford). CEA compliant and VERY compact which is probably my favorite part. LOTS of clean power for the size it is, it came with a certificate of 629 RMS. Runs pretty cool. It gets warm but never burning hot although I am just powering 1 MB Quart PWM304 with it . Highly Recommend this product. The only con are the angled wire terminals.

11 of 25 found this helpful

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Accessory Tools and Products

Accessories added

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Browse 22 questions and 95 answers
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Why did you choose this?
Sonic Electronix Store
To power my SWR-D4 12in type R
Max Y on May 4, 2015
Have been told it is a great quality product.
Camecia L on Apr 18, 2015
Rocksford is the best quality amp for the money that I have found. That is saying a lot for the number of amps I have used.
malcom b on Apr 21, 2015
Recommended by a friend who states the is a great Amp.
Henry B on Apr 6, 2015
can you run this amp at 2ohms to 2 2ohm subs?
trentf150 on Dec 4, 2014
Best Answer: I have mine running to 1 rockford p2 12 inch sub at 2ohms if you want full power on both of your subs you'll probably want two amps or a amp with higher watt output
Reply · Report · Avery G on Dec 4, 2014
· Add Answer · I Have This Question Too (6)
can this do 1 12 inch p3 healthy? every birth sheet I have seen it does 630 watts rms+ and that's more than the rms for a 12 inch p3
A shopper on Jan 29, 2015
Best Answer: Hello,

As you have noticed by now, you are going to get very different replies. This is due to the fact that you haven't provide enough detailed information to provide a solid uniform answer. " 1 12 inch p3 " is only a description; It's great that we know the size and series, but what model is it?
The 500X1D is commonly matched up with one Rockford Fosgate P3D4-12 ; so if That is the model you are referring to, then we say go for it! =]

For future inquiries, please make sure to provide a proper Model Number, not just a description. This is so you can be given accurate answers.
Reply · Report · Customer SStaff on Feb 2, 2015
· Add Answer · I Have This Question Too (2)
I have a 1968 C-10 Truck and are running a custom autosound with 300 Watts Peak featuring 2 Channel RCA Auxiliary Input for Satellite etc, 4 Channel RCA Pre-outs and Subwoofer Line out w/Level and x-over Adjustments with (2) 6in Pioneer Speaker 120 watt speakers, w/ (2) 200 watt 8" woofer and 2 Piezo tweeters and a 40 watt Dash Mount Speaker. Also, i'm running (2) 10" sub woofers, What amp would you recommend or would i run multiple ones. I've seen a lot of people recommending the Rocksford Fosgate Punch 300 series with this radio. Can you help?
chefcorymac on Aug 2, 2014
Best Answer: I would need your equipment specs (speaker RMS wattage,IMPEDENCE, model, manufacturer ) this R500xd in question is a mono amp meant only for subwoofers. If you use this for your two tens depending on final impedance of the two tens then this amp is plenty powerful for your build. If you would like further recommendations from me please ask! Hope this helps. Birth sheet on amp was 678 watts if I remember right, plus it's really small which is awesome
Reply · Report · david w on Aug 2, 2014
· Add Answer · I Have This Question Too (1)
could this power 2 p1s2-15?
trentf150 on Dec 4, 2014
Best Answer: I have no clue at all haha sorry man. Just give them a call and they will help you out. All the guys are way friendly and extremly helpful
Reply · Report · alex a on Dec 4, 2014
· Add Answer · I Have This Question Too (0)
could this amp power 1 10 inch p3 at 2 ohms healthy? this amp does 500 rms and the sub is 500 rms 1000 watt max will it be healthy for the subwoofer?
A shopper on Nov 16, 2014
Best Answer: Yes peak numers really does not matter its rms that is important you want to send the same rms from the amp as sub although for the best peformance you want to give it some head room and send about 10-15% above rms to the sub . Rockford fosgate always underates there amps even the prime series so this would work very well for you set up .
Reply · Report · Caleb N on Nov 18, 2014
· Add Answer · I Have This Question Too (0)
i have 2 10 inch subs i got from some old home tower speakers they are both 8 ohms if i ran 2 sets of speaker wire from the amp to both of them would it harm the amp? or if i just ran one?
A shopper on Nov 12, 2014
Best Answer: The Fosgate R500X1D is rated at 300W X 1 @ 4 Ohms and 500W X 1 @ 2 Ohms. The reason it is 300W X1 and 500W X 1 is that this is a mono amp which only has one channel. With your (2) 8 ohm speakers you will be able to achieve a 4 Ohm load on the amp by taking the positive lead from each speaker and wiring them to the positive lead on the amp and by taking the negative lead from each speaker and wiring them to the negative lead on the amp. This is called parallel wiring and the formula is as follows:

Rtotal = (R1R2) / (R1+R2), so in your case (8*8) / (8+8) = 64 / 16 = 4

Do a Google search on car audio sub wiring and you should come up with all kinds of good reading.

Hope that helps.
Reply · Report · Darren B on Nov 13, 2014
· Add Answer · I Have This Question Too (0)
I sold the car that this amp was in and forgot to get the remote. I want to install this in the car that I have now. Will the amp still work without the remote?
Kirk A on Sep 22, 2014
Best Answer: Hello Kirk,

Absolutely; you just will not be able to adjust the Gain/Level 'on the fly'. You can regain that feature by picking up a Universal Remote Level Control like the NVX XBRC;

http://www.sonicelectronix.com/item_40536_NVX-XBRC.html
Reply · Report · Customer SStaff on Sep 22, 2014
· Add Answer · I Have This Question Too (0)
what is the max power rating wired at 2ohms?
Michael H on Aug 24, 2014
Best Answer: Hey Michael this is Caleb N. glad I could help . This sub is rated at 500 watts rms which is continous power . Rockford amps are underated so it will push alittle more then that . A tip I would give is make sure the subs you are running are 2ohm stable also make sure to give the speakers about 10-20% over rms you want to give speakers head room when you are wanting to crank it up not the bare minimum .
Reply · Report · Caleb N on Aug 29, 2014
· Add Answer · I Have This Question Too (0)
is this amp 1 ohm stable?
Scott A on May 19, 2015
Best Answer: Hello Scott,

The description has all the information on the amplifier. As you will see, there is no 1ohm rating, therefore implying that the amplifier is NOT 1ohm Stable.
Reply · Report · Rick MStaff on May 19, 2015
· Add Answer · I Have This Question Too (0)
will this amp be enough for 1 p2d2 8 rockford?
A shopper on May 10, 2015
Rockford Fosgate R500X1D
Rockford Fosgate R500X1D
Rockford Fosgate P2D2-8
Rockford Fosgate P2D2-8
Best Answer: Hello,

The setup must be wired in SERIES to a 4ohm load!! The response saying it must be "2ohm" is incorrect and is impossible to accomplish. =]

http://www.the12volt.com/12voltimages/1_2ohm_dvc_4ohm.gif
Reply · Report · Rick MStaff on May 10, 2015
· Add Answer · I Have This Question Too (0)
Will this amp power my two 300 watt 2 ohm 12 inch kicker subwoofers?
JGrocks18 on Apr 11, 2015
Best Answer: Yes, if they are single voice coil then the amp should be pushing more than 300rms at 4 ohm. If you have the dual voice coil wired to 2 ohm then you will have plenty of head room for more. I know the power rating for this amp are underrated. Mine came with a birth sheet claiming 639 RMS at 2 ohm.
Reply · Report · Adam M on Apr 11, 2015
· Add Answer · I Have This Question Too (0)
I got a kicker comp r 12" sub to go with this amp. The sub says its a 2 ohm sub, but the switch on it only has 1 or 4 ohms to select. Which setting should it be on?
A shopper on Apr 2, 2015
Best Answer: Hello,

Stephen has provided the best answer. Assuming you only have One subwoofer, then you MUST put the switch to 4ohms. Switching over to 1ohm WILL damage the amplifier. Also, the sub does NOT "say its a 2ohm sub", it likely says DUAL-2ohm. Unfortunately, you may want to consider changing out the subwoofer for the Dual-4ohm, to get the proper figures you seek. If you've purchased these products from us recently, give our sales team a call for help.

[For future inquiries, please make sure to provide a model number, not a description.]
Reply · Report · Rick MStaff on Apr 3, 2015
· Add Answer · I Have This Question Too (0)
is this amp too big for sum 8inch p2 ?
kenneth on Jan 3, 2015
Best Answer: Hello Kenneth,

For future inquiries, its important that you specify the exact model number of the subs. Your description can literally one of two current models, and one of NUMEROUS previous models. All the answers you are getting will be wrong and detrimental to your setup if you are implying any model that is not the Rockford Fosgate P2D2-8 . Please make sure you go with two Rockford Fosgate P2D2-8 . The Rockford Fosgate P2D2-8 wired in series/parallel will give you a 2ohm final load, making it a PERFECT match for the R500.
Reply · Report · Customer SStaff on Jan 4, 2015
· Add Answer · I Have This Question Too (0)
can you guys recommend single 10'' subwoofer for this amp? I want install this amp on 1991 Toyota truck single cab so my only possibility is use a angled box. If is possible I want to know one 4 ohms 300w or the one with 500w at 2 ohms which is the best to match up? thanks
Nando on Mar 28, 2015
Best Answer: JL Audio 10w3v3-2. This sub matches the amp perfectly. W3 subs are made in USA and JL tends to perform better in smaller boxes than any other
Reply · Report · Tommy L on Mar 28, 2015
· Add Answer · I Have This Question Too (0)
I have this amp and the orange light is on and no sound out the subs. What is wrong?
BigCajun on Jan 8, 2015
Best Answer: How many volts are you pumping to it and do you have it properly grounded?
Reply · Report · Kathleen E on Jan 8, 2015
· Add Answer · I Have This Question Too (0)
if I have 2 2ohm subs hooked to this will it give 250 watts rms to both channels??
A shopper on Dec 17, 2014
Best Answer: In short no. This is a mono block amp which means it only has one channel. If you were to connect both of your 2 ohm subs to it you would have to wire them in series which would produce a 4 ohm load at which the amp only makes 300 watts which would be 150 watts per speaker. If you wired them in parallel it would produce a 1 ohm load which will most likely mean the amp will spend the majority of the time if not all in protect mode.
Reply · Report · Darren B on Dec 17, 2014
· Add Answer · I Have This Question Too (0)
How long is the remote bass control wire on this?
A shopper on May 5, 2015
Best Answer: Too long. Seriously, unless you're driving a limousine, I promise you'll be just fine with plenty to spare. Can't give you an actual number for it's length because I never measured. My car is a 2013 passat. Amp in the trunk, control under my dash. Still have enough wire to reach the emblem on my bumper
Reply · Report · joseph a on May 5, 2015
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Is this amp https://www.sonicelectronix.com/item_67758_Rockford-Fosgate-Prime-R500X1D.html be a good match for two of these? I won't be under powering or over powering them right? Also has anyone tried these in this enclosure https://www.sonicelectronix.com/item_92143_Qpower-QBOMB12V.html or even tried the enclosure itself? Finally is this overall a good first budget setup? And if you could recommend me with a good amp wiring kit for this setup that would nice too. Sorry for all these questions as you could probably tell, I'm a audio noob. Thanks in advance.
thirdwardtx713 on Apr 4, 2015
Rockford Fosgate R500X1D
Rockford Fosgate R500X1D
QPower QBOMB12V
QPower QBOMB12V
Kicker 10C12D4
Kicker 10C12D4
Best Answer: The amp would have enough power if the subwoofers were a different impedance. The subwoofers are have dual 4 ohm voice coils, this can be intimidating to someone who is new to car audio. Simply put, when you connect the subs to the amp, the subs will be wired to 1 ohm (so will speak in a 1 ohm language) where that amp will put out 500 watts at 2 ohms. So what you will need is either two dual 2 ohm subs or two single 4 ohm subs. I would suggest these subs http://www.sonicelectronix.com/item_64264_Kicker-40CWD122-CompD122.html wired in 2 ohm.

If you need help with the wiring, feel free to use sonic electronix wiring diagrams http://knowledge.sonicelectronix.com/tools/subwoofer-wiring/

As far as the box goes, it's a nice box but it's a little small for you. These subs require 1.75-2.25 cubic ft per sub in a ported box and ported boxes are better when they're built specifically for a subwoofer. I would suggest this sealed box instead. http://www.sonicelectronix.com/item_33909_Atrend-12DQ.html

For a wiring kit, I suggest this one. And you can save a few bucks on it when you buy it with the rockford amp. http://www.sonicelectronix.com/item_86031_Belva-BAK42BK-Black.html
Kicker 40CWD122
Kicker 40CWD122
Belva BAK42BK
Belva BAK42BK
Reply (1) · Report · Adam L on Apr 5, 2015
· Add Answer · I Have This Question Too (0)
I have 2 10 inch Rockford r1s the 2015 model their stats are 200 watts rms a piece and 400 watts max so 400 watts rms and 800 watts max if I wire them to 2 ohms will 500 watts be overpowering them or will it work good?
A shopper on Mar 26, 2015
Best Answer: Hello,

Unfortunately, you won't get accurate enough information to answer your question, because you did not provide the information we need. A description of the subwoofer isn't going to help, unfortunately. You managed to omit the important part of the description, the Configuration. Assuming your drivers are Dual-2ohm , then wiring them to a 2ohm load is perfectly fine, because the amp will provide ~250w RMS to Each.
Reply · Report · Rick MStaff on Mar 26, 2015
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What is the true rating for the amplifier at 4 ohms? Because I know it is more than 500 at 2 ohms so I am curious on what it truly is a 4 ohms
Sadiq L on Apr 22, 2015
Best Answer: At 2 ohms the birthsheet states 517 and 4 ohm is half of that so at 4 ohm the amp would be doing 258rms watts.
Reply · Report · santos m on Apr 22, 2015
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Will this amp run my JL Audio HO208G-W3v3, 2 8's in a JL box? Or would it do better with 1 sub only?
Stephen S on Dec 5, 2014
Best Answer: Hello Stephen ,

The Rockford Fosgate R500X1D is a perfect match for the JL Audio HO208G-W3v3. The JL Audio HO208G-W3v3 requires ~500w RMS @ 2ohms, and the R500X1D provides Exactly that.
Reply · Report · Customer SStaff on Dec 6, 2014
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Product Summary

Manufacturer

Model Number

R500X1D

UPC

780687340605

Weight

6.00lbs

Internal SKU

r500x1d

Internal Product ID

67758

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 R500X1D

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