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Rockford Fosgate Prime R150X2
2-channel car amplifier 50 watts RMS x 2
Item # 575R150X2 | MFR # R150X2
Offers & Financing
Our take on the Rockford Fosgate Prime R150X2 by Crutchfield's Buck Pomerantz
Rockford Fosgate power for your speakers
Rockford Fosgate performance in an affordable package — the Prime Series R150X2 2-channel amp can drive a pair of speakers with 50 watts RMS each, so you'll really feel your tunes rockin'. Or, you could switch the R150X2 to 1-channel mode to run a sub with 150 watts RMS — when you buy a bigger amp for your subs later on, you can still use this 2-channel to drive your front speakers. Smart move.
You can use the high- and low-pass filters and Rockford Fosgate's famous Punch boost to get maximum performance from the speakers in your vehicle. And speaker-level inputs let you hook this amp up to almost any system, even a factory stereo.
Rugged performance and value
The R150X2's heavy cast-aluminum chassis efficiently draws damaging heat away from its internal components, ensuring reliable, long-term play. The amp's built-in sensors keep track of the output current and power supply temperature, ensuring that plunging speaker impedances (they change constantly during play) or even a short circuit won't hurt anything. Your driver's seat will become your favorite place for listening to music once this Prime amp goes to work.
Great for my highs and mids and easy installation
isaac, Franklinton nc
What's in the Box:
- 2-Channel amplifier
- 6" Speaker level input harness
- 3mm Allen wrench
- Four 3/4" Self-tapping screws
- 4 Flat washers
- Installation & Operation manual (English/ French/ Spanish/ German/ Italian)
- Amplifier verification certificate
- 2-channel car amplifier
- 50 watts RMS x 2 at 4 ohms (75 watts RMS x 2 at 2 ohms)
- 150 watts RMS x 1 bridged output at 4 ohms (4-ohm stable in bridged mode)
- CEA-2006 compliant
- variable high- and low-pass filters (50-250 Hz, 12 dB/octave)
- variable bass boost (0-12 dB at 45 Hz)
- Class-AB amplifier design
- MOSFET power supply
- frequency response: 20-20,000 Hz
- preamp and speaker-level inputs
- preamp outputs
- 8-gauge power and ground leads and a 20-amp fuse recommended wiring and hardware not included with amplifier
- no onboard fuses when installing multiple amps in a system, an additional 20-amp in-line fuse between the distribution block and this amplifier is recommended
- 11-1/4"W x 2"H x 7-3/8"D
- warranty: 1 year
- Our 60-day money-back guarantee
Rockford Fosgate Prime R150X2 Reviews
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Features and Specs
|RMS Power Output (Watts x Channels)||
50 x 2
|Peak Power Output (Watts x Channels)||N/A|
|Power at 2 Ohms (Watts x Channels)||75 x 2|
|Bridged Power (Watts x Channels)||150 x 1|
|Minimum Impedance Bridged||4|
|Minimum Impedance Unbridged||2|
|Best Frequency Response||20-20k Hz|
|THD at Rated RMS Power||1%|
|Signal to Noise Ratio||80 dB|
|Low-Pass Crossover Frequency||50-250 Hz|
|Low-Pass Slope (dB/octave)||12 dB/octave|
|High-Pass Crossover Frequency||50-250 Hz|
|High-Pass Slope (dB/octave)||12 dB/octave|
|Bass Boost||0-12 dB|
|Bass Boost Frequency||45 Hz|
|Speaker Level Inputs||Harness|
|Preamp Outputs||1 pair|
|Parts Warranty||1 Year|
|Labor Warranty||1 Year|
Overview: The Rockford Fosgate Prime R150X2 2-channel amplifier is designed to power a set of full-range or component speakers. The amplifier can also be bridged to power a single speaker.
CEA 2006 Compliant: The R150X2's power ratings and signal to noise ratio are measured according to the uniform standards advocated by the Consumer Electronics Association (CEA). This allows you to accurately compare these specifications for all CEA 2006-compliant amplifiers, even from different brands. Manufacturers who adhere to these standards can display the CEA 2006 logo on their products and packaging. CEA2006 Specifications for this amplifier are:
- 4 Ohms: 50 watts RMS x 2 at 4 ohms, 14.4 volts, and less than 1% THD+N
- 2 Ohms: 75 watts RMS x 2 at 2 ohms, 14.4 volts, and less than 1% THD+N
- Bridged: 150 watts RMS x 1 at 4 ohms, 14.4 volts, and less than 1% THD+N
- S/N: 80 dB, measured at 1 watt output (100 dB measured at rated power)
LED Indicator: The amplifier is equipped with an LED power/protect indicator. The LED illuminates blue when the unit is turned on. It illuminates red if the thermal or short circuit protection circuit is engaged, and the amplifier will automatically turn off.
Mounting: The amplifier can be mounted vertically or horizontally using the supplied mounting screws. The amplifier should never be mounted in an engine compartment as this will void the warranty.
Gain Control: Use the amplifier's gain control to match the output of the source unit. The rotary gain control is labeled 1 to 11 and has a sensitivity range of 150mV to 4V when using the RCA inputs, 450mV to 12V when using the speaker level inputs.
Crossover: The amplifier is equipped with a 12dB/octave Butterworth crossover. A crossover switch allows you to choose low-pass, high-pass, or full-range operation. The crossover point is continuously variable from 50 to 250 Hz.
Punch EQ: The Punch EQ bass boost circuit is adjustable from 0 (min) to +12dB (max) and centered at 45Hz.
Power Terminals: The power and ground terminals are nickel-plated set screw terminals and will accommodate up to 4 gauge power and ground wires.
Fuse: An external 20-amp fuse (not included) must be installed on the power wire at the battery. If a wiring kit is used which includes a fuse with a value other than 20-amps, the original should be replaced with a 20-amp fuse.
Remote Turn-On Terminal: The remote turn-on terminal is a nickel-plated set screw terminal that will accommodate up to an 8 AWG wire. It's used to remotely turn the amplifier on and off.
Speaker Terminals: The two pair of speaker outputs are nickel-plated set screw terminals what will accommodate up to 8 AWG speaker wire.
RCA Input Jacks: The industry standard RCA jacks provide an easy connection for preamp level input. They are nickel-plated to resist signal degradation caused by corrosion.
Speaker Level Input: A speaker level input harness is included, making it easier to add the amplifier to a factory radio or to a receiver with no preamp outputs.
RCA Output Jacks: A pair of RCA pass-thru jacks provides a convenient source for daisy-chaining an additional amplifier without running an extra set of RCA cables from the front of your vehicle to the amplifier location.
Our Product Research Team
At Crutchfield, you'll get detailed, accurate information that's hard to find elsewhere. That's because we have our own in-house Product Research team. They verify what’s in the box, check the owner's manual, and record dimensions, features and specs. We stay on top of new products and technologies to help people make informed choices.
Why did you buy this?
Great size and sound in a space saving package. [ WILLIAM May 31, 2017 ]
replace dinosaur PSL amp to run kicker 6x9 free air [ Shannon May 28, 2017 ]
Price [ Kirk Apr 23, 2017 ]
Upgrade dragging front speakers running 8 channels on a 250w fosgate punch lul [ CALYB Dec 14, 2016 ]
quality and recommendation [ Glenvall Oct 02, 2016 ]
Rex's advice. [ William Sep 28, 2016 ]
Cost [ ALEJANDRO Aug 15, 2016 ]
I chose this amp because of the reviews on Crutchfield. I wanted a dependable long lasting amp. [ Hugh Jul 20, 2016 ]
Wanted to upgrade the power output to new receiver installation. [ William Mar 09, 2016 ]
Chance - put everything in my cart that will work with my vehicle. Chance's Bio: http://www.crutchfield.com/Support/Bio.aspx?bio=173 [ Ed Jan 18, 2016 ]
We like Rockford. Used it before and had Goodluck with it. [ GENE Dec 23, 2015 ]
This is a great amp at a great price. I paired this with an Alpine head unit (UTE-52BT) and kicker 6x9's (40CS6934) for a 2 channel set up. I chose this over the Alpine amps since this had the pre-amp inputs from the head unit. Overall, everything was purchased on a discount and should all work together with no issues. This was a great Crutchfield team recommendation for my head unit and speakers since I wanted to use the pre amp outputs of a head unit. [ Brandon Dec 23, 2015 ]
Brand Name and History with Product [ richard Dec 16, 2015 ]
7 questions already asked
According to Rockford, this amp only has built in tone controls for the bass section @ 45hz. We are using our amp to drive a pair of component speakers, but we didn't purchase a bass knob. My understanding is that only the punch and power amps have the capability to boost treble. Prime amps don't have this function. [ LYLE Apr 07, 2017 ]
This is directly out of the manual: Punch EQ This works along with the crossover switch on the amplifier. When set to Low-Pass (LP) operation, this is a variable Bass Boost. When set to High- Pass (HP) operation, this is a variable Mid-Bass and Treble Boost. When set to All-Pass (AP) operation, both the Bass and Treble frequencies are boosted. Set this to your personal preference while listening to the system [ Doug Apr 06, 2017 ]
The Punch EQ is really a bass boost. You don't boost high frequencies with an amp; you're boosting all frequencies. Adjust treble and bass from the headunit and leave the punch eq knob alone. [ ALDRIC Apr 06, 2017 ]
According to Rockford stats, that amp will put out 75 watts per side @ 2 ohms. You would have to wire each side/channel using two 4 ohm door speakers on each side, in parallel, or bi-wire each speaker on each channel to the amp. It should work, but I don't know how loud you play your music. Theoretically that configuration will nearly double a transistor amp output before clipping, as most mid-fi car audio head units are rated @ < 1% THD. Try it. [ RICHARD F Aug 31, 2016 ]
Yes it can [ KEVIN Aug 30, 2016 ]
The simple answer is yes. It is only a 2 channel amp, so you would wire 2 speakers on left channel and 2 on the right and you would lose front to rear fading capabilities. [ LYLE Aug 29, 2016 ]
NO! It's 2 channel 4 ohm ... You want a 4 channel 4 ohm! [ Frank Aug 29, 2016 ]
You will want to contact an Advisor by phone (1-800-324-9695) or online chat to discuss compatibility/connection with your factory system. They will be able to pull up your vehicle and see how everything integrates, and what you will need for installation. [ Kenny Aug 06, 2016 ] Staff
This power amp is rated for 2-channel stereo at ONLY 50 watts per side at 1.0 % Total Harmonic Distortion. I would NOT recommend it to power two 125 watt rated 12" subwoofers, it would be too under powered and over distorted. Yes one could get sound out of the subwoofer but it would be unpleasant and likely distorted. When one uses subwoofers, one should match the power amp to the speaker rating AND it would even be better to have the amp slightly more powerful so as to avoid distortion. I would suggest at least a power amp of 150 watts per side @ no more than 1.0 % Total Harmonic Distortion. DON'T BUY a lesser amp, and yes you'll have to spend more money, but at least when you turn it up, ( and that's probably why you want "two" 12" subs ), it'll sound the way I suspect you'll want it to. I used this amp to upgrade the head unit to the door speakers only. [ RICHARD F Mar 25, 2016 ]
2 answers I know RF sends a sheet with the amp that states how much power actually gets produced by the amp, does anybody know what theirs said?? i have a pair of speakers that can only handle up to 70 watts and just wanted to make sure that this amp doesnt put out too much. ive seen some videos, usually monoblock amps, where they claim like 750 but the sheet states like 950. so i just want to make sure that this'll work without blowing my speakers [ Tiny94 Dec 08, 2014 ]
A lot will depend on how many ohms you're using. At 4 0hms, the amp will put out 50 watts RMS per channel maximum. At 2 ohms, 75 per. This info is readily accessible at crutchfield.com. Again, these are ratings with the power turned all the way up. Since, hopefully you realize that you should never do such a thing, I would safely say that you should have absolutely no problems powering speakers rated at 70 watts. I'm powering 2 Polk Audio DXi571 speakers with great results. [ William Dec 13, 2014 ]
The amp spec sheets often do show a higher power rating. This is usually between 10-30% over rated power and will be specific to that amplifier. I think this will be a great match for your speakers. If it were to be higher rated than the speakers, then you can simply set the gain down slightly to compensate. [ Jeff Dec 11, 2014 ] Staff
Thanks for your question. For information on selecting the best amp for your subs I would recommend reaching out to an Advisor by phone (1-800-324-9695) or online chat. They will be able to help determine the differences between the amp models and help you make the best choice for your system. [ Krissy Mar 24, 2014 ] Staff
1 answer I have a 2011 Toyota Camry Hybrid. What are my options on radio, amp & speaker upgrades? I have purchased and installed all these items in the past. But. This is a hybrid. I don't want to mess anything up. Or order something that won't work. Just wanting to check on my options? Thanks. Paul. [ Paul Malone Jan 05, 2014 ]
You will want to contact an Advisor by phone or online chat to discuss compatibility with your vehicle. They will be able to pull up your vehicle and see if this will integrate. If it does not, then they will also be able to discuss other options with you. [ Jeff Jan 06, 2014 ] Staff