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Rockford Fosgate R750-1D

750W RMS Class D Monoblock Prime Series Car Audio Amplifier

In Stock. Only 2 Left!
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List price $359.95

$229.99

with warranty

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In Stock. Only 2 Left!

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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

34763

294

Rockford Fosgate R750-1D

$229.99

+

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

$252.48

You Save $7.50

Prime Certified Power

Looking for a monoblock with reliable power ratings and efficiency without having to spend a fortune? Sonic Electronix is excited to introduce Rockford Fosgate's R750-1D. With a rating of 400 watts x 1 channel @ 4 ohms, 600 watts x 1 channel @ 2 ohms, and 750 watts x 1 channel at 1 ohm, this amplifier is perfect for those looking to amplify anything from entry level to some more serious power at the 1 ohm rating. Fine tuning your amplifier will be a cinch with the use of the variable high-pass, infrasonic, and variable bass boost crossovers. The use of a cast aluminum heat sink will control heat dissipation to keep your amplifier running cool and efficient no matter how long or short your listening sessions turn out to be. So if you are looking for a Class D high efficient monoblock amplifier that will never let you down, then look no further than Rockford Fosgate's R750-1D.

General Features

  • Prime Series Full Range Class D Monoblock Car Amplifier
  • RMS Power Rating:
    • 4 ohms: 250 watts x 1 chan.
    • 2 ohms: 500 watts x 1 chan.
    • 1 ohm: 750 watts x 1 chan.
  • MOSFET power supply
  • Remote bass level input remote included
  • LED power (green) and protect (red) indicators
  • Variable Bass Boost (0 to +18 dB bass boost at 45 Hz)
  • Soft Start Turn-on
  • Monoblock channel operation
  • Preamp RCA outputs to daisy chain multiple amps
  • 2-Way System Protection circuitry
  • 60 Amp In-Line fuse is highly recommended
  • Heavy duty cast aluminum alloy heatsink for extreme heat dissipation
  • Variable high-pass filter (50-500 Hz, 12 dB/octave)
  • CEA-2006 compliant amplifier
  • Frequency response: 20-250 Hz
  • Dimensions: 6-11/16"L x 9-1/8"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

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.
400 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.
600 watts x 1 channels
RMS Power @ 1 ohm
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 1 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.
750 watts x 1 channels
Peak Power Output
This form of power rating refers to the maximum amount of power an electronic device can handle or output in an instant without damage. Often times this maximum is achieved during a brief musical burst, such as a drum accent or low bass hit. Some manufacturers display peak power ratings on the face of their products to increase the appeal to consumers. The RMS power rating is more accurate, and we recommend using it for product comparison. This is the peak power output for the amplifier's 5th channel.
Not Specified

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.

750 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.
1.5 ohms
Minimum Impedance Bridged
The lowest impedance the amplifier will handle when it is bridged.
Not Bridgeable
THD at Rated RMS Power
The amount of change in harmonic content of the signal as it is amplified. A lower figure indicates less change and a more accurate amp. THD below 0.10% is inaudible.
1.0%
Speaker Level Inputs
Speaker level inputs are commonly referred to as high-level inputs and vice versa. This input type allows you to get your audio signal directly from the speaker wire in your vehicle, instead of using RCA cables. The advantage of this is factory integration, as most stock radios do not have RCA outputs to run amplifiers.
No
Preamp Outputs
Many amplifiers are equipped with RCA preamp outputs which pass the original music signal from the source to additional amplifiers. This is known as daisy chaining because the source connects to the first amp, and the first amp connects to the second amp, etc. The advantage to daisy chaining is you only need one 2-channel RCA cable to transfer the signal from the head-unit to the amplifier, and then one additional cable for each amp being daisy chained.
1 pair
Built-in Crossover

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

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

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

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

50 - 250 Hz
Subsonic Filter
Allows you to block (filter) ultra-low frequencies that your subs cannot reproduce.
15 - 40 Hz
Signal-to-Noise Ratio
This spec compares the strength of the signal to the level of background noise. A higher value indicates less background noise.
100 dB
Bass Boost
The objective of the bass boost is to get more kick out of your subwoofer. It is a circuit that emphasizes the lower frequencies at a given point. The bass boost should always be set first before setting the gain. This feature is known for destroying subwoofers and is commonly used incorrectly, so be cautious.
0 - 18 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.
60A X 1 In-Line Fuse Recommended
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
Sonic Electronix

Summary of Customer Ratings & Reviews

Rating Distribution

5 Star
92%
4 Star
8%
3 Star
0%
2 Star
0%
1 Star
0%

Average Attribution Rating

Durability
4.9
Value
4.9
Features
4.9
Design
4.7
Usability
4.9

Alex

Fresno, CA

Overall
Durability
Value
Features
Design
Usability

Rockford Fosgate R750-1D

August 22, 2012

When I first received it I realized that it was smaller than a previous Rockford Fosgate amp I purchased so I was worried it wouldn't push the full power it says it can output. The birth sheet that came with it says a total of 916 watts RMS @ 1 ohm sitting at 14.4v of course. This amp has some serious power for being so tiny! It outputs clean strong power that doesn't lack even on a hot summer day here in California. As the matter of fact I was able to drive from Fresno, CA to Pismo Beach, CA which is a 3 hour long drive and it never shut off on me. I would recommend doing the 'Big 3 Upgrade' on your electrical system so you don't put so much stress on your battery and alternator. I recommend you buy this amp especially since it offers almost 1,000 of true power without leaving the wallet empty.

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Adam

Independence, VA

Overall
Durability
Value
Features
Design
Usability

the little amp that could

June 14, 2014

this is a GREAT amp it pushes what it says and over and I know for a fact that it's .5ohm stable or can push it this amp is probably the best ive had in a long time... it preforms about like a punch 600.1 I would even say thats it's closest retaliative.

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Corey

Chandler, AZ

Overall
Durability
Value
Features
Design
Usability

Amazing Amp!

March 5, 2014

I purchased this amp and I love what it can do! As most have previously stated, the amp pushes more than the 750w @ 1ohm as stated. The birth certificate with mine rated is at 880 watts. I am a HUGELY loyal RF amp and sub person but have always been leary of buying their PRIME line of products because they aren't "supposed" to be Fosgate's best line. This has changed my mind on the PRIME line. This hits just as hard as some of my older previous PUNCH and POWER amps! I have it powering 2 RF P2's @ 1ohm in a ported box that I got here at Sonic Elextronix (P2-2X12) and it has almost rattled off the rear view mirror on the windshield!

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Andrew

Newnan, GA

Overall
Durability
Value
Features
Design
Usability

Very good value

October 28, 2013

It was a really good amp for the value. I had it hooked up to a rockford t1 2 ohm 12" and it sounded really good.

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Charlie

Shelbyville,IN

Overall
Durability
Value
Features
Design
Usability

Great Value

September 17, 2013

Great product for great price. Easy to adjust equalizer and comes with volume knob

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Adam

AZ

Overall
Durability
Value
Features
Design
Usability

Love this amp!

November 9, 2012

This amp is awesome! Love everything about it! Rated for 750 rms but most of them are over 900 rms @ 1 ohms (that will vary per amp of course) gotta love rockford for throwing in birth cirtificates and extra powa!

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Jeff

Rosamond ,Ca

Overall
Durability
Value
Features
Design
Usability

Would buy more

October 11, 2012

I bought Rockford amps and speakers for the quality, and compact ability you can fit more. They are excellent in power and output. Easy to install. Great products.

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Marx

Midland Tx

Overall
Durability
Value
Features
Design
Usability

really good amp!

August 16, 2012

i bought this amp b/c of brand & reputation of Rockford Fosgate. i have this amp for my JL Audio w6 10" sub & thus amp preforms very well doesnt get hot at all & is very reliable. i highly reccommend this amp.

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christopher

killeen, TX

Overall
Durability
Value
Features
Design
Usability

great amp

July 31, 2012

this is a great amp, i have it hooked to 2 fockford fosgate p2 10" & this amp pushes them hard very impressed how much power comes from this lil amp

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Patrick

Paterson, NJ

Overall
Durability
Value
Features
Design
Usability

Right choice

April 27, 2012

I thought this amp would not be able to drive my p3-12 Rock ford Fosgate sub but it gave me a big surprise, i bought this amp to add a little base to my factory stereo and i have no regrets if you are looking for a nice upgrate for your factor stereo well this is one of the best amp on the market thanks to sonic.

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ananymous

South Dakota

Overall
Durability
Value
Features
Design
Usability

Awesome!

April 14, 2012

I have this product hooked up to an 10" atomic subwoofer and my head unit is a double din pioneer. It is rated for 400 watts at 4 ohms and this amplifier matches it perfectly, although on the box it did not say it was rated for 400 watts at 4 ohms like it does on the website. The remote bass accessory that comes with this is a must! It is so easy to adjust the bass on the go and I use it all the time, and although there is a light on it that is quite bright, it turns on with the amp so you always know when it is on, which is nice. I will buy another Rockford Fosgate Product.

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cory

Shelbyville, TN

Overall
Durability
Value
Features
Design
Usability

Tiny amp with alot of heart!!!!!!!!!

March 10, 2012

I recommend this amp for a two sub combination, my amp birthsheet was 918 and i have 2 re audio srx 12s in a slot ported box and this amp pushes those 12s with ease. A must buy, don't let size fool you. Durability is Rockford Fosgate.

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Cookie

Georgia

Overall
Durability
Value
Features
Design
Usability

1 Ohm Stable

December 28, 2011

Wow! I was a little skeptical about running 1 ohm but glad I did with this amp. Have 2 10" Kicker CVT 2 ohm subs wired to 1 ohm and man does it pound. Previous amp was badly underpowering them. The Fosgate birthsheet showed 949 watts at a 1 ohm load. Been running a few days and the casing remains cool to the touch. Be sure to get at least 4 gauge wire and take it easy on the gain. Best wattage bang for the buck!

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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

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 XIX25 X-Series RCA Interconnect Cable

16.4 ft. of 4-Channel X-Series RCA Cable with Dual Twisted Pair Hyper-Flex Technology

Your Price $26.99

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

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

AutoSound 2000 CD-104

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

Your Price $11.99

Product Summary

Manufacturer

Model Number

R750-1D

UPC

780687333133

Weight

6.25lbs

Internal SKU

r7501d

Internal Product ID

34763

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 R750-1D

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