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Alpine MRV-M250

250W Mono Block V-Power Class D Subwoofer Car Amplifier

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Alpine MRV-M250

250W Mono Block V-Power Class D Subwoofer Car Amplifier

$99.99

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Belva BAK82

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AudioControl Epicenter-InDash

If you want the best bass possible and a way to measure how loud your system is playing

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General Features:

  • V-Power Series Mono Block Class D Car Amplifier
  • RMS Power Rating:
    • 4 ohms: 150 watts x 1 chan.
    • 2 ohms: 250 watts x 1 chan.
  • Max power output: 250 watts x 1 chan.
  • Variable Bass Boost (0 to +12 dB bass boost at 50 Hz)
  • Speaker-level (high-level) inputs with signal sensing for automatic turn-on
  • Variable low-pass filter (50-400 Hz, 24 dB/octave)
  • Subsonic filter (24 dB at 15 Hz)
  • 8 gauge power and ground wiring is required for installation
    • Contact us for information regarding a discount on select amplifier kits from our website when purchased together with this amplifier
  • CEA-2006 Compliant
  • Dimensions: 7-1/2"W x 7-7/8"L x 2-3/16"H
  • Authorized Internet Dealer
  • 1-year Manufacturer's Warranty

Product History:

Alpine MRV-M250 thumbnail
(newest, current model)
Alpine MRP-F250 thumbnail
(previous model, replaced by Alpine MRV-M250)

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.
150 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.
250 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.
V-Power (Alpine)
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 Peak Power Output
The total peak power output is measured as the wattage per channel multiplied by the number of channels, and is calculated at the lowest level of operating impedance.

It is measured during a brief musical burst, such as a sudden drum accent. Some manufacturers display peak power ratings on the face of their products to increase the appeal.

The RMS power rating is more accurate, and we recommend using it for product comparison.

250 watts
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.

250 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.
Any Gauge with use of Spade Terminal AWG
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.
0.3%
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
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 - 400 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.
105 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 - 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.
Optional (Accessory required and sold separately)
Fuse Rating
The amperage and the number of fuse(s) an amp requires.
30A 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
Hi-Res Audio Compatible
This feature refers to if the product is capable of Hi-Res Audio (HRA) playback.

Warranty and Return Policy

Parts Warranty Duration
1 year
Labor Warranty Duration
1 year
Warranty Provider
Manufacturer

Summary of Customer Ratings & Reviews

Rating Distribution

5 Star
100%
4 Star
0%
3 Star
0%
2 Star
0%
1 Star
0%

Average Attribution Rating

Durability
4.7
Value
5.0
Features
4.7
Design
4.7
Usability
5.0
Mikey

Knoxville, TN

Overall
Durability
Value
Features
Design
Usability
It's Alpine...Enough Said!

January 17, 2014

I purchased this amp to pair with the 10" NVX NSW104 subwoofer. I have a crew cab Dodge Ram, and I put it in a custom sealed box behind the driver's side under the back seat. I was just looking for something in the 300W (RMS) range to improve the factory sound. I've been running it for a few weeks now, and I LOVE it! The PROS: It's Alpine! I could just stop right there, but to be more informative I'll continue with my full list. It came with a birth sheet from the factory that said it tested at 275W @ 2 ohm which is 25 over the listed watts. It runs extremely efficient and never gets hot. It has a very small footprint and is very easy to install. There is zero distortion and it sounds great with any type of music. The sub has a range of 200-350 rms, and this amp pushes it perfectly. At first I was a little worried I wasn't getting a powerful enough amp since NVX says it runs optimally at 350W, and that I would have to run it at max power to fully optimize the sub, but the Sonicelectronix guys assured me it would be a good pair, and again it doesn't even get warm to the touch. I am SO glad I got it. I can't imagine the sound being any better than it is now. The CONS: I have only one. The amp doesn't come with the bass knob. You have to purchase it separately. However, it's not a big deal at all, because I can adjust the bass level from my head unit, which is the JVC KW-R900BT that I purchased with the package. Besides, when I tuned the amp, I set the gain almost to the highest setting and the bass level on the amp very low. Bottom line, I would highly recommend this amp to anyone wanting a moderate upgrade from a factory system. You won't be disappointed.

23 of 28 found this helpful

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JK

Winchester va

Overall
Durability
Value
Features
Design
Usability
Great amp

April 13, 2015

Powerful little amp. Mine tested at 270w @ 2ohm,rms. Plenty of punch for an 8",10" even a 12" sub.

15 of 18 found this helpful

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Connor

Colorado

Overall
Durability
Value
Features
Design
Usability
Mrv m250

August 21, 2016

Great amp, performs well with my 10 inch JL sub. Small size and lightweight, easy to mount out of the way. Great choice for the price.

1 of 1 found this helpful

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Accessory Tools and Products

Accessories added

Belva BAK82

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4 Meters (13 ft.) 2-Channel K-Series RCA Audio Interconnect Cable

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4000 Series 2-Channel RCA Cable

17 ft. of 2-Channel 4000 Series RCA Interconnect Cable designed for the Audiophile

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NVX XWS1625 16 AWG Speaker Wire

25 ft. of True 16 Gauge 100% Copper EnvyFlex Speaker Cable/Wire

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Belva BBSW127 12 AWG Speaker Wire

12 Gauge 7 Meter (23 Ft) Speaker Wire (CCA)

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Belva BBSW167 16 AWG Speaker Wire

16 Gauge 7 Meter (23 Ft) Speaker Wire (CCA)

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NVX XBG3PK 1/0 Gauge OFC Big 3 Upgrade Kit

Comes with everything you need to upgrade your power and ground wire.

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Belva BBG3KT CCA 1/0 Gauge Big Three Kit

Features everything needed to upgrade factory power and ground wire.

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270 Amp G Series Alternator for Select 1994-2012 GM Vehicles

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240 Amp S Series Alternator for Select 1992-2003 Dodge/Jeep Vehicles

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240 Amp L Series Alternator for Select 1963-1985 GM Vehicles

Specifically designed to fit in tight spaces

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250 Amp Alternator for Select 2003-2008 Ford/Lincoln/Mercury Vehicles

Cutting edge 6 phase hairpin stator technology with Twin internal rectifier plates with finned heat sink

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240 Amp S Series Alternator for Select 1999-2006 Jeep Vehicles

6 phase alternators use less horsepower per Kilowatt than conventional 3 phase alternators

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240 Amp S Series Alternator for 2011 Toyota Corolla

Ultra precision balanced rotor with oversized charge post ensure sturdy cable connections

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240 Amp S Series Alternator for 2006-2011 Honda Civic

15% more efficient than typical alternators

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370 Amp E Series Alternator with Black Finish for Select 1994 - 2003 GM

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320 Amp S Series Alternator for Custom and Racing Applications

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NVX XCAP1F

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Rockford Fosgate RFC1D - Top of the Line 1 Farad

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Belva BB1D

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NVX XTGSP2

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Scosche TK12

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Five Piece Installer's Panel Removal Tool Kit

Remove panels the right way (Durable Nylon Plastic Pry & Chisel Tool Set

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Universal Wire Puller

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Pair of 4 Gauge Spade Terminals, #8 Opening

Spade Terminals • 4 Gauge • 1 Red & 1 Black • Nickel Plated

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Pair of 8 Gauge Spade Terminals, #8 Opening

Spade Terminals • 8 Gauge • 1 Red & 1 Black • Nickel Plated

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Pair of 10 Gauge Spade Terminals, #8 Opening

Spade Terminals • 10 Gauge • 1 Red & 1 Black • Nickel Plated

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8 Gauge Ring Terminals, 5/16" Opening

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PRO Series Classic Short GM Battery Post Shoc-Krome

Side post battery adapter for GM type batteries (Positive or Negative)

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PRO Series Classic Long GM Battery Post w/ Shoc-Krome Plating

Side post battery adapter for GM type batteries (Positive or Negative)

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200 Amp Relay Isolator (BIR200)

Great for isolating a second batter making it dedicated to the stereo system

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120 Amp 4-Post Battery Isolator

Prevents primary battery discharge and extends battery life

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240 AMP 3-Post Battery Isolator

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World's Smallest AFS / Mini ANL Fuse Holder

Accepts 4 gauge or 8-gauge wire

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ANL/Mini-ANL Fuse Holder with 1/0 or 4 Gauge Input and Output

No-fail termination and current flow, it helps keep your system protected and running smoothly

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4 Pack of 80 Amp Nickel-Plated MANL Fuse

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4 Pack of 100 Amp Nickel-Plated MANL Fuse

Mini-ANL (MANL/AFS) 100A Nickel Plated Fuses

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4 Pack of 150 Amp Nickel-Plated MANL Fuse

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2 Pack of 200 Amp Nickel-Plated ANL Fuse

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2 Pack of 300 Amp Nickel-Plated ANL Fuse

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Gauge Reducer, 4 Gauge Input to 8 Gauge Pin

Great for amplifiers that do not accept a large gauge power wire

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Browse 3 questions and 6 answers
Hide answersShow all answers | Sort by
Why did you choose this?
Sonic Electronix Store
Alpine quality. Was 50% off at time of purchase.
Calvin T on Sep 29, 2016
It was a great choice on a top quality amplifier. ?. And the perfect pick when wanting to add bottom end to a sound system, without over doing it!
Brian N on Oct 13, 2015
the RMS watts matched the subwoofer I have.
Isaac S on Sep 5, 2016
How do I adjust the amp to get more punch and less boom? On this MRV M-250
jrthb1 on Mar 25, 2015
Best Answer: Lower gain, higher frequency... The amp also has a bass boost setting on the end to increase boom... Mine came shipped to me with bass boost turned up about half way and ended up cutting back to clarify the sound. Hope this helps!
Reply · Report · taylor s on Mar 25, 2015
· Add Answer · I Have This Question Too (0)
would this be a good match with a Rockford Fosgate R2SD4-10 200W 10" Prime Stage 2 Shallow Mount Dual 4 ohm Subwoofer?
David B on Nov 19, 2014
Best Answer: Yes this would be a good match for the R2SD4. Great bang for the buck and I have always love electronics and Alpine does a great job delivering.
Reply · Report · Wesley L on Nov 19, 2014
· Add Answer · I Have This Question Too (0)

Product Summary

Manufacturer

Model Number

MRV-M250

UPC

793276012425

Weight

4.50lbs

Internal SKU

mrvm250

Internal Product ID

74713

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: Alpine MRV-M250