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Rockford Fosgate R500X1D

500W RMS Monoblock Single Channel Class D Prime Series Amplifier

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List price $249.99

$149.95

with warranty

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Arrives by Thursday, Aug. 7 to zip 07095

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Bundled Savings with this Product

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25% off 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 with the purchase of select amplifiers.

7.50

67758

294

Rockford Fosgate R500X1D

$149.95

+

25% OFF

Belva BAK42

$29.99

Special Price $22.49 ($29.99 if purchased separately)

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

(Offer 1 of 1)

Combined Total Price

$172.44

You Save $7.50

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 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

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
88%
4 Star
8%
3 Star
4%
2 Star
0%
1 Star
0%

Average Attribution Rating

Durability
4.9
Value
4.9
Features
4.6
Design
4.8
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.

2 of 2 found this helpful

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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 shit get up on it!

1 of 1 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.

1 of 1 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

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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!

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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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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.

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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.

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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

0 of 0 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

0 of 0 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.

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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!

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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.

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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. )

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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!

0 of 0 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!

0 of 0 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.

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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.

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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!

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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.

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Accessory Tools and Products

Accessories added

NVX XKIT42 100% OFC True 4 Gauge Wiring Kit with RCA Cables and Speaker Wire

The reviews speak for themselves, this is awesome wire with everything you need!

Your Price $89.99

Rockford Fosgate RFK4X 4 Gauge Amp Kit

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

Your Price $99.99

Belva BAK42 4 Gauge Amplifier Installation Kit

Great amps need great wire at a great price. This amp kit has everything you need!

Your Price $29.99

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

Rockford Fosgate RFC1D - Top of the Line 1 Farad

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

Your Price $104.99

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

AutoSound 2000 CD-104

Audiophile reference series test disc for evaluation of all audio components.

Your Price $11.99

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Why did you choose this?
Sonic Electronix Store
I know that Sonic Electronix's reviews are true as well as their specifications are and sonic's amplifinder helped me find this amplifier that was right for my rockford fosgate p3d4-10 subwoofer
Donald C on Jul 30, 2014

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 R500X1D

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