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Alpine MRV-M500

Mono subwoofer amplifier — 500 watts RMS x 1 at 2 ohms

71 Reviews | 15 questions - 33 answers

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Our take on the Alpine MRV-M500

Alpine makes it a little easier to get great bass in your vehicle, especially if you drive a compact car. Their V-Power Series MRV-M500 mono subwoofer amplifier sends up to 500 watts RMS to your sub, guaranteeing some powerful bass on your drive. And Alpine made this amp so small — it's got less than an 8" by 8" footprint and it's just over 2" tall — it can fit almost anywhere.

Alpine Authorized Online Dealer

Compact powerhouse

Alpine makes it a little easier to get great bass in your vehicle, especially if you drive a compact car. Their V-Power Series MRV-M500 mono subwoofer amplifier sends up to 500 watts RMS to your sub, guaranteeing some powerful bass on your drive. And Alpine made this amp so small — it's got less than an 8" by 8" footprint and it's just over 2" tall — it can fit almost anywhere.

Thermal protection without annoying shut-downs

The MRV-M500 uses a technology called Enhanced Shutdown Performance, which rolls back the output a bit when the amp threatens to overheat from playing at its limits too long. Instead of shutting down completely, it continues playing your music, until it cools enough to return to full power.

Convenient features

A low-pass filter puts you in command of the frequencies that reach your sub, while a bass boost lets you apply plenty of low-end punch. The amp includes preamp- and speaker-level inputs, so you can install it in almost any vehicle, even one with a factory radio. If you're using the speaker-level inputs, the amp senses an incoming signal and turns itself on, eliminating the need to run a turn-on wire run back to your vehicle's receiver or fusebox.

If you're a tweaker, you'll appreciate the end-piece terminal covers that can be snapped in and out without the need for any tools. You can control the volume of your MRV-M500 from the front seat with the optional RUX-KNOB remote bass controller.

Putting together a bass system with this amp? Check out this Crutchfield-approved amp/sub package.

Alpine MRV-M500

MRV-M500 input and control panel

Confused about impedance? Check out our article on matching subs and amps.

Amazing power in a small Package and a perfect addition to a factory system with high level inputs.

Rjs, Fl

Featured Video:

What's in the Box:

  • Mono subwoofer amplifier
  • Two 30 amp ATO fuses (installed)
  • 7.5" Speaker-level input harness
  • 2 Snap on terminal covers
  • Four 3/4" Self-tapping hex-head screws
  • Owner's manual (English/ French/ Spanish)
  • Alpine Verification Certificate
  • Warranty information
  • On-line product registration information

Product Highlights:

  • mono subwoofer car amplifier
  • 300 watts RMS x 1 at 4 ohms (500 watts RMS x 1 at 2 ohms)
  • CEA-2006 compliant
  • variable low-pass filter (50-400 Hz, 24 dB/octave)
  • variable bass boost (0-12 dB at 50 Hz)
  • Class D amp with MOSFET power supply
  • preamp and speaker-level inputs
  • preamp outputs
  • Remote Sensing automatic turn-on when using speaker-level inputs
  • optional RUX-KNOB wired remote level control
  • gold-plated screw terminals
  • fuse rating: 30A x 2
  • 4-gauge power and ground leads recommended — wiring and hardware not included with amplifier
  • 8-1/4"W x 2-3/16"H x 7-15/16"D
  • warranty: 1 year
  • Our 60-day money-back guarantee

Alpine MRV-M500 Reviews

Average Customer Review(s):

(71 Reviews)
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Hands-on research

Product Research


CEA-2006 Compliant: CEA-2006 is a system of testing and measurement methods for mobile audio amplifiers. This voluntary standard advocates a uniform method for measuring an amplifier's RMS power output and signal-to-noise ratio. The criteria for measuring power uses a DC input voltage of 14.4 volts and the RMS power output is measured with 1% or less Total Harmonic Distortion plus noise (THD+N) over a frequency range of 20 Hz to 20 kHz (for full range amplifiers). Signal-to-Noise ratio is measured in weighted absolute decibels (dBA) at a reference of 1 watt into 4Ω. CEA-2006 allows consumers to compare car amplifiers and receivers on an equal basis. Using CEA-2006 criteria, the Alpine MRV-M500 is rated as follows:

  • Power Output:
    • 4Ω: 300 watts x 1-channel (<0.2% THD+N)
    • 2Ω: 500 watts x 1-channel (<0.3% THD+N)
  • Signal to Noise Ratio: 85 dBA (105 dB at rated power)

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. The 8-pin harness has inputs for front and rear speakers. While only two speaker inputs are necessary, wiring all four will minimize the fader's effect on the subwoofer output.

Auto Turn-on: If using the speaker level input, an automatic circuit turns the amplifier on when it senses an input signal.

Low Pass Filter: The amp is equipped with a 50-400Hz variable low-pass filter with a slope of 24 dB/octave. This being a mono subwoofer amp, the crossover is always engaged.

Bass EQ: The Bass EQ circuit provides a variable boost (0-12dB) at 50 Hz.

Wired Remote: An RJ-25 jack is provided for connecting an optional RUX-KNOB wired remote (item number 500RUXKNOB, sold separately), allowing remote control of the output level of the amplifier.


  • Battery: set screw terminal; accepts up to 4 gauge wire
  • Remote: set screw terminal; accepts up to 8 gauge wire
  • GND (ground): set screw terminal; accepts up to 4 gauge wire
  • Speaker Output: set screw terminals; accept up to 8 gauge wire
  • Line Inputs: 1 pair of stereo RCA jacks
  • Line Output: left and right channel RCA output jacks to daisy-chain another amplifier without having to run an additional set of cables; the output is not affected by the MRV-M500's internal crossover
  • Speaker Level Input: Molex plug input for supplied 8-pin harness
  • Wired Remote: RJ-25 jack for optional wired remote

Note: Alpine recommends 4 gauge power and ground wire (minimum).

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.

Staff Reviews

Product reviews from the Crutchfield Labs

Alpine's V-Power car amplifiers are smaller than ever, and they employ smart digital technology that makes them incredibly versatile.

What are the Labs?
Q & A

Customer Q&A

Crutchfield asked  
Why did you buy this?

Perfect to push the 2 10's I ordered. [ Candace  Jun 04, 2017 ]
Positive reviews, Alpine's reputation and wanted to try something new. [ Donald  Mar 29, 2017 ]
Match my JL W3 12 perfectly [ Dean  Mar 04, 2017 ]
BRAND [ T  Mar 02, 2017 ]
I already have one [ KIPPLIN R  Feb 16, 2017 ]
Pricing and customer feedback. [ DONTE  Jan 19, 2017 ]
recommended by advisor [ Aaron  Jan 05, 2017 ]
Alpine has the cleanest sound in the most compact form and will punch you in the face with hard clean base, no distortion! [ Jon  Dec 15, 2016 ]
Replacing same amp that I inadvertently cooked by crossing hot speaker wires. This little amp rocks and you can't beat the value. Using to power a 10" JLW3V3 sub added to a stock B&O system in my Audi. Easily done with with the speaker level input. Only running at 1/2 gain and it hits hard without overwhelming my stock minds and highs. It also mounts easily underneath my seat and because it is digital doesn't get too hot. [ Johnny G.  Nov 27, 2016 ]
Excellent amp for mid power [ Matthew  Nov 09, 2016 ]
Name, recognition, reputation. [ Gene  Oct 15, 2016 ]
Have this amp mated to a JL 10" sub in my jeep and it's a match made in heaven. Picking up a second now to put into my firebird! [ Robert  Sep 16, 2016 ]
Great amp good price [ Steven  Sep 12, 2016 ]
I chose this amp for its compact size and outstanding performance. [ Travis  Sep 05, 2016 ]
It's Alpine 500 what else to say [ Joshua  Sep 04, 2016 ]
Features, cost and reviews [ Tom  Aug 15, 2016 ]
power/price/reviews [ Tom  Aug 06, 2016 ]
used it before mine got water damage [ CHRIS  Apr 23, 2016 ]
This amp looks cool, and is a perfect amp for the subs i bought [ DYLAN  Apr 09, 2016 ]
Recommended by Advisor Chip Chip's Bio: [ Joseph  Mar 28, 2016 ]
Sub power [ Mike  Mar 18, 2016 ]
Great amp. Had two of them in the past in other systems [ I  Mar 14, 2016 ]
quality amp [ Jennifer  Feb 21, 2016 ]
I chose this amp mainly because of the Alpine name and their reputation for quality mobile electronics. Also, the capability of controlling the amp with a remote. Other features included low THD and a good Signal-to-Noise ratio. It is a good price for this powerful an amplifier and Alpine tests the output of every amp so I will get the 500 RMS at 2 ohm or greater. [ Alan  Feb 11, 2016 ]
Already have the MRV F 300 4 channel.....wanted the same high quality. [ BRIAN P  Feb 10, 2016 ]
Alpine...need I say more. I've always used Alpine amps and these little guys do not disappoint. I have this running a JL Audio CS110G-W6v3 sub, drives it beautifully for crisp clear sound with my music tastes. [ titanium man  Jan 18, 2016 ]

15 questions already asked

The Alpine MRV-M500 is a mono subwoofer amplifier, which is not designed to drive full-range speakers. Even if wired properly, any/all of the speakers you connect to the MRV-M500 amp would only produce bass frequencies between 7-400Hz. You'd be much better off using a 4-channel amp to drive your speakers instead. I would recommend reaching out to an Advisor by phone (1-800-324-9695) or online chat for further information and help selecting the appropriate amplifier for your system. I hope that helps! [ Larry  Nov 14, 2016 ]  Staff
You could wire this to a factory sub easy, just look up the wiring diagram, might have to do a lot of splicing. What vehicle is this for? [ Isaiah  Aug 24, 2016 ]
Yes it can I.have a Subaru forester with a factory sub and I used the factory signal wire to work the new sub. [ RANDY  Aug 24, 2016 ]
Yes, it should. This will give you 300 W RMS at 4 Ohm, and the Polk MM 1240D is a 4 Ohm woofer with a RMS range of 100 - 425 W. I have had good audio with the low-pass filter around 300 Hz, however with a 12" woofer you might consider seeing how it sounds at a lower cutoff. [ gareth  Jun 29, 2016 ]
This would not be a good choice for voice speakers. This amp works best in the 7-400 Hz range - so it is really designed for subwoofers. I would recommend contacting an Advisor by phone (1-800-324-9695) or online chat. They will be able to help you track down an amp that will work for you system and your budget. [ Jeff  Jan 20, 2016 ]  Staff
I do not believe so since this is only a mono block you would not be able to send the sound to multiple speakers. [ Larry  Jan 17, 2016 ]
Maybe you have the amp level too high. I set my amp level so that it hits the highest level I want when I have knob turned all the way up. [ Chris  Jan 23, 2016 ]
Bernard, Been using the RUX knob for about 2 1/2 years, with Alpine M500 driving a 10" MB Quart woofer in a 2013 F150. Have not had any issues with the interface. I never use the knob past 50% anyway. I'm sure other variable resistors would work, just not plug and play. Good luck. [ Ken  Jan 18, 2016 ]
Specs say pre amp non fading outputs. I had front, rear and sub outs on my headunit but i suspect you could feed the high pass out to other amps [ BRAD  Jan 11, 2016 ]
Yes [ Lisa  Sep 21, 2015 ]
NO [ DEBORAH  Sep 16, 2015 ]
No, the knob is a separate purchase. [ Michael  Sep 15, 2015 ]
NO it doesn't. You will have to purchase it separately. [ Robert  Sep 15, 2015 ]
No [ JARROD  Sep 15, 2015 ]
NO purchase separately but we'll worth it [ VINCENT  Sep 15, 2015 ]
Hey Chris awesome choice in amplifier, if you are installing one amp then tapping into one rear deck (6x9) speaker is good enough. it all depends on your stereo system, if your car has a built in amplifier from factory and you want to use the high input harness for your amp all you need is to tap into one speaker (2 wires). if you connect both (6x9) speakers to one amp you will minimize the power to the amp. I have 2 MRV-M500 installed in my Buick Verano 2012,and that particular car comes with a built in factory stereo amp. when I first installed both amps I had one amp per speaker and I tapped in to the (6x9)'s 2 speaker wires for the left amp and 2 speaker wires for the right amp. what happened is the amps sounded very distorted. what I did to straighten the power out was, I tapped into one (6x9) speaker 2 wires using the high input wires of one amp then with RCA plugs I connected the other amp to the first amp. distortion was gone and now you can here me coming 5 blocks away. I have 2 MRV-M500 connected to 2 SWS-15D4 alpine speakers one amp per speaker. I hope this helps. [ Clyde  Feb 19, 2015 ]
I only used 4. Tapping into only my 2 rear speakers to pick up the bass and everything worked fine. I had it that way for a year then got a new head unit and connected normal RCA's. Biggest thing is connecting the remote turn on wire from the amp to a circuit that actually turns off when the car is off if you are not going to tap into the back of the head unit. Hope that helps. Good luck. [ BRENT J  Feb 18, 2015 ]
Chris, Just to confirm you are asking about the MRV-M500 amp which is Mono. The MRV-F300 is the 4/3/2 channel amp. If you are asking about the MRV-M500, I used pre amp inputs but since this is a mono amp you should only need 1 channel input. With that said I would recommend using L&R speaker inputs in case the source material has bass in only one channel. This is rare but can happen. [ BRAD  Feb 18, 2015 ]
but don't forget about the remote power wire coming from the stereo [ ROBERT L  Feb 05, 2015 ]
You have to have the "remote" wire going from the head unit to the amp telling it to turn on and off whenever the head unit is powered on or off. It is basically a 12v power supply. I just have a switched 12v running from the battery to the amp completely bypassing the head unit. [ TODD B  Feb 05, 2015 ]
it sounds like you may not have your remote wire to your amp ran to the right place. How do you currently have it ran? [ BRANDON KEITH  Feb 05, 2015 ]
If you purchased the product from Crutchfield, feel free to contact our Tech Support team. They can walk you through the settings on the product and see if there may be a fix. Our toll-free Tech Support number is printed on your invoice, and is also available under the "My Orders" tab in the "My Account" section of our website. If you did not purchase the unit from Crutchfield, then you may want to contact the manufacturer. You can also post your question in our forums: Or try our online support center: [ Greg  Feb 05, 2015 ]  Staff
You can use the old bass know with the telephone cable connection. [ justin  Jan 30, 2015 ]
this amp looks like it has aremote bass controll that can be dash mounted . [ WALTER  Jan 27, 2015 ]
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  Dec 21, 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 30, 2014 ]  Staff
when I first installed the Alpine MRV-M500 in my car, I noticed that about, in the first six hours, it was very very warm, but after that, it has been working fine, I did not do anything to fix it , I've had this amp for five months, and when I touch it with my hands, hardly feel hot and the music in my car listening very clear, I also noticed that the sound of my 12'' subwoofer had a change, now also the sound is strong but does not have much power as punch to make my car shake or vibrate as Previous amplifier that I had, but still I like it because all my music is heard entirely clear. [ ALEJANDRO  Jan 16, 2014 ]
i have never even felt mine get "hot". the only time i check it is during the summer on the really hot day (99-102). have you try mounting the amp so there's a space under? And maybe try an open mounting position, meaning good air flow. mines on top of my box dual subwoofer 12in box. and its taking up the whole back part part of my extend cab s-10. you might just have a bad amp to. one of the main reasons i bought this amp was the fact of its thermal protection. [ STEPHEN D  Jan 07, 2014 ]
I have this amp mounted under back seat in Chevy truck, so I'm unable to monitor heat, if any. [ WILLIAM  Jan 07, 2014 ]
Even though I have a hatchback where the amp can get plenty of air, I have noticed that it gets hot, but has never gone into protection mode or declined in performance in any way. The gain on my amp is almost all the way up too. I'm pushing a JL Audio HO 10" W3V3, so the amp is matched up well. I am not a car audio expert, I just know that the amp keep working with a heavy load. [ JASON A  Jan 07, 2014 ]