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Alpine MRV-M250

Mono subwoofer amplifier — 250 watts RMS x 1 at 2 ohms

Item # 500MRVM250

Alpine makes it a little easier to get great bass in your vehicle, especially if you drive a compact car.

Alpine makes it a little easier to get great bass in your vehicle, especially if you drive a compact car.

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Item # 500MRVM250

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C$219.99

About the Alpine MRV-M250

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-M250 mono subwoofer amplifier sends up to 250 watts RMS to your sub, guaranteeing some strong bass on your drive. And Alpine made this amp so small — about the size of an outstretched hand and 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-M250 mono subwoofer amplifier sends up to 250 watts RMS to your sub, guaranteeing some strong bass on your drive. And Alpine made this amp so small — about the size of an outstretched hand and just over 2" tall — it can fit almost anywhere.

Thermal protection without annoying shut-downs

The MRV-M250 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. You can control the volume of your MRV-M250 from the front seat with the optional RUX-KNOB.2 remote bass controller.

Alpine MRV-M250

MRV-M250 input and control panel

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

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Product highlights:

  • mono subwoofer car amplifier
  • 150 watts RMS x 1 at 4 ohms (250 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
  • Remote Sensing automatic turn-on when using speaker-level inputs
  • optional RUX-KNOB.2 wired remote level control
  • gold-plated screw terminals
  • fuse rating: 30A x 1
  • 8-gauge power and ground leads recommended — wiring and hardware not included with amplifier
  • 7-11/16"W x 2-3/16"H x 7-15/16"D
  • warranty: 1 year
  • Our 60-day money-back guarantee
  • MFR # MRV-M250

What's in the box:

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

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Alpine MRV-M250 reviews

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39 reviews

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Product Research

Features

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-M250 is rated as follows:

  • Power Output:
    • 4Ω: 150 watts x 1-channel (<0.2% THD+N)
    • 2Ω: 250 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.

Connections:

  • Battery: screw terminal; accepts spade connectors or ring terminals up to 0.35" wide
  • Remote: screw terminal; accepts spade connectors or ring terminals up to 0.35" wide
  • GND (ground): screw terminal; accepts spade connectors or ring terminals up to 0.35" wide
  • Speaker Output: screw terminal; accepts spade connectors or ring terminals up to 0.35" wide
  • Line Inputs: 1 pair of stereo RCA jacks
  • Speaker Level Input: Molex plug input for supplied 8-pin harness
  • Wired Remote: RJ-25 jack for optional wired remote

Note: Alpine recommends 8 gauge power and ground wire (minimum).

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Customer Q&A

Q
Crutchfield asked: Why did you buy this?
A
Alpine is a trusted name. reasonable price and it works for my needs. [ ROY S  Sep 24, 2019 ]
A
Size and power output [ BRIAN  Sep 03, 2019 ]
A
Nice price...easy on my car's electrical system, being a "D" amp. Only needed enough power to drive a 6.5 dual voice coil sub in a Honda Element. [ M  Jul 27, 2019 ]
A
good power output for the price, wish there was a 200 watt one though [ gradie  Jul 11, 2019 ]
A
Good price [ Jesus  Jun 08, 2019 ]
A
Good reviews. I don't need Earth churning bass. Just want more depth to the music I listen to [ John Tyler  May 31, 2019 ]
A
i love alpine products. [ Juan  Apr 30, 2019 ]
A
Good quality, good price. [ John  Apr 02, 2019 ]
A
Alpine Qualty [ Hirotaka  Aug 03, 2018 ]
A
Just enough punch to power my SUB (8" JL W3), it's compact and it's Alpine so why not. Alpine makes great products. I have never owned an alpine amp but they haven't let me down with their decks. I'll update my review once I have heard the final product but I have high hopes that it will not let me down. [ DANIEL P  Jan 12, 2018 ]
A
The Alpine amp had great reviews, the size was also important. Plus the remote bass boost was free. [ robert  Dec 10, 2017 ]
A
Troy, my Crutchfield Advisor, highly recommended this amp to go with my head unit and speaker choice. [ Bryan  Oct 12, 2017 ]
A
Matches my sub woofer and has speaker level input that does not require remote line. [ Maverick  Jun 08, 2016 ]
A
Size, output, match system. [ Chris  Apr 27, 2016 ]
A
I like Alpine stuff [ Jeffrey  Feb 06, 2016 ]
A
Matched component with Alpine SWS-12D2 subwoofer speaker. [ John  Dec 30, 2015 ]
A
Was strongly considering the 500w model, but this is just to enhance the factory system, no need to drown everything else out. [ Rhett  Dec 14, 2015 ]
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7 questions already asked

Q
If I use the RCA inputs and not the Speaker Level inputs will it still automatically turn on?
[ Andrew  Sep 04, 2019 ]
4 answers
A
No. Speaker level inputs only. If you are running RCAs might as well run a remote wire with them.
[ Jim  Sep 04, 2019 ]
A
Regardless of which input you use, you have to hook up the amp turn on wire connection.
[ Bryan  Sep 04, 2019 ]
A
As long as your "remote" wire, which if I recall is the blue wire, is hooked up then you will not have any issues with the amp turning on regardless of which inputs you use.
[ James  Sep 04, 2019 ]
A
Please check your head unit for the conditions listed below: (Fig. 5) a. The head unit does not have a remote turn-on or power antenna lead. b. The head unit's power antenna lead is activated only when the radio is on (turns off in the tape or CD Mode). c. The head unit's power antenna lead is logic level output (+) 5V, negative trigger (grounding type), or cannot sustain (+) 12V when connected to other equipment in addition to the vehicle's power antenna. If any of the above conditions exist, the remote turn-on lead of your MRV-M250 must be connected to a switched power source (ignition) in the vehicle. Be sure to use a 3A fuse as close as possible to this ignition tap. Using this connection method, the MRV-M250 will turn on and stay on as long as the ignition switch is onEnter an answer to this question.
[ Michael  Sep 04, 2019 ]
Q
my Alpine MRV-M250 amp wont power on.i pluged the power wire to battery.i did a granded wire.and theres no power light on.what is the problem?
[ Terrance  Jul 16, 2019 ]
1 answer
A
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.
[ Krissy  Jul 30, 2019 ]  Staff
Q
Can I connect 4ga power/ground to terminals?
[ Rafael  Apr 17, 2019 ]
2 answers
A
Not directly- 8 gauge max size is the max. Guess you could with an adapter or trimming the wire, but that size wire would be way overkill unless the run was extremely long.
[ Richard  Apr 20, 2019 ]
A
I don't think you could make that happen. A 4ga ring terminal would probably be too wide and I barely got 8ga bare stuffed in there on mine. I recommend connecting your 4ga to a fused power distribution block then a short run of 8ga from there to the amp. Just leave the fuses out of the connections you are not using yet. If you have not already run 4ga and do not plan on adding amps later 8ga is more than enough to power this little guy.
[ Jim  Apr 17, 2019 ]
Q
If I used the automatic turn-on, what is the standby current draw? I want to make sure it won't pull too much from the battery.
[ Nathaniel  Sep 15, 2016 ]
1 answer
A
I use the auto feature through the amp turn on through my head unit and so far I haven't come out to a dead battery
[ ZACHARY  Sep 16, 2016 ]
Q
How do I determine how many Ohms this amp is outputting? Is it a wiring issue? On pictures I seen of this amp, there is no switch for Ohms? If I want to use this amp for 250W @ 2 Ohms, How would I do that? Thanks...
[ SylAbys  Sep 08, 2016 ]
1 answer
A
If you purchased the product from Crutchfield, feel free to contact our Tech Support team. They can walk you through the settings/connections 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: http://community.crutchfield.com. Or try our online support center: http://crutchfield.custhelp.com/app/answers/list/kw/.
[ Kenny  Sep 09, 2016 ]  Staff
Q
What amperage do I need from the battery to this amp?
[ MRod202  Apr 18, 2014 ]
1 answer
A
I forwarded your question to an Advisor and they responded with the following: This amplifier requires 30 amps from the battery. If you would like to discuss further you can contact an Advisor directly by phone (1-800-324-9695) or online chat.
[ Krissy  Apr 22, 2014 ]  Staff
Q
How do I install the Alpine mvr-m250 to my doors speakers, I have a jvc deck witch has a out put front and rear and the amp only has one input?
[ karlo  Jan 10, 2014 ]
2 answers
A
this is a mono amp. you would not use it for door speakers, you would use it for a subwoofer. look at 2 channel amps.
[ Jason  Apr 22, 2015 ]
A
For details on fit or installation please contact an Advisor by phone or online chat. They will be able to pull up your vehicle and receiver to give you the details on how to connect this amplifier.
[ Jeff  Jan 10, 2014 ]  Staff
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