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Alpine MRV-F300

4-channel car amplifier — 50 watts RMS x 4

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  • Alpine MRV-F300

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Our take on the Alpine MRV-F300

by Buck Pomerantz
Alpine

My system has plenty of power. Who needs an amp?

You might think you don't need an amp because you have a 400-watt system in your car, or because your new stereo puts out 50 watts a channel. But those are peak wattage ratings, which may boil down to 15 or 20 watts per channel, using the more realistic RMS rating. An amp sends your speakers the power they need to deliver your music with clarity and impact, whether you're using factory speakers or high-performance components. And low-frequency reproduction requires lots of power, so an amp is an absolute must if you're adding a sub to your system.

Alpine Authorized Online Dealer

Compact powerhouse

Alpine was thinking about versatility when they built their V-Power Series MRV-F300 4-channel amplifier.

  • In 4-channel mode, it delivers 50 watts RMS to each of your car's front and rear speakers, making for some sweet sound on your drive.
  • You can also run this amp in 3-channel mode, powering a subwoofer with 150 watts RMS while driving a pair of full-range speakers with 50 watts each.
  • Or, if you need a good amp for bass, you can switch the amp to 2-channel mode and send up to 150 watts RMS each to a pair of subwoofers.

You can always find a place for this amp in your system, and Alpine made this amp so small — 40% smaller than the previous model — it can fit almost anywhere.

Thermal protection without annoying shut-downs

The MRV-F300 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

High- and low-pass filters put you in command of the frequencies that reach your speakers, while a bass boost lets you apply some extra 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 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.

Alpine MRV-F300

Alpine MRV-F300 input and control panel

See more info on this item

Highlights:

  • 4-channel car amplifier
  • 50 watts RMS x 4 at 4 ohms (75 watts RMS x 4 at 2 ohms)
  • 150 watts RMS x 2 bridged output at 4 ohms (4-ohm stable in bridged mode)
  • CEA-2006 compliant
  • variable high- and low-pass filters (50-400 Hz, 12 dB/octave)
  • selectable bass boost (+12 dB at 50 Hz) on channels 3 & 4
  • MOSFET power supply
  • preamp and speaker-level inputs
  • Remote Sensing automatic turn-on when using speaker-level inputs
  • gold-plated screw terminals
  • fuse rating: 40A x 1
  • 8-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

Hands-on research from the Crutchfield Labs (what are the Labs?)

Features and Specs
Performance
RMS Power Output (Watts x Channels)
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50 x 4
Peak Power Output (Watts x Channels)
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N/A
Power at 2 Ohms (Watts x Channels)
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75 x 4
Bridged Power (Watts x Channels)
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150 x 2
Minimum Impedance Bridged
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4
Minimum Impedance Unbridged
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2
Best Frequency Response
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20-20K Hz
THD at Rated RMS Power
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0.08%
Signal to Noise Ratio
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81 dB
Input Voltage
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14.4v
Features
Amplifier Class
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D
Low-Pass Crossover Frequency
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50-400 Hz
Low-Pass Slope (dB/octave)
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12 dB/octave
High-Pass Crossover Frequency
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50-400 Hz
High-Pass Slope (dB/octave)
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12 dB/octave
Bass Boost
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12 dB
Bass Boost Frequency
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50 Hz
Fan Cooled
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No
Fuse Rating
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40
Speaker Level Inputs
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Harness
Preamp Outputs
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No
Width (inches)
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8-1/4
Height (inches)
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2-3/16
Depth (inches)
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7-15/16
Parts Warranty
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1 Year
Labor Warranty
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1 Year
Product Research
What's in the box?

Download owner's manual

  • 4-Channel amplifier
  • 40 amp ATO fuse (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

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 open the box, verify contents, 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.

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-F300 is rated as follows:

  • Power Output:
    • 4Ω: 50 watts x 4-channels (<0.08% THD+N)
    • 2Ω: 75 watts x 4-channels (<0.1% THD+N)
  • Signal to Noise Ratio: 81 dBA (98 dB at rated power)

Bridgeable: Both the front and rear sections of the MRV-F300 are bridgeable, so it can be used as a 4-channel, 3-channel, or 2-channel amp.

Note: When bridging the amp, Y-adapters should be used to feed identical signals the channels to be bridged together.

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.

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

Controls: The front and rear sections of the amplifier (labeled Channel 1/2 and Channel 3/4) have independent gain and crossover controls. Channel 3/4 also adds a Bass EQ switch:

  • Channel 1/2:
    • Gain: rotary dial; continuously variable from 200mV-4V using the preamp inputs or 500mV-10V using the speaker level inputs
    • Crossover Mode: three position switch; Off (full range), High Pass, or Low Pass
    • Crossover Frequency: rotary dial; variable from 50 Hz to 400 Hz
  • Channel 1/2:
    • Gain: rotary dial; continuously variable from 200mV-4V using the preamp inputs or 500mV-10V using the speaker level inputs
    • Crossover Mode: three position switch; Off (full range), High Pass, or Low Pass
    • Crossover Frequency: rotary dial; variable from 50 Hz to 400 Hz
    • Bass EQ: two position switch; On/Off; adds +12dB boost centered at 50 Hz

Connections:

  • Battery: set screw terminal; accepts up to 8 gauge wire
  • Remote: set screw terminal; accepts up to 8 gauge wire
  • GND (ground): set screw terminal; accepts up to 8 gauge wire
  • Speaker Outputs: four pair of set screw terminals; accept up to 10 gauge wire
  • Line Inputs: 2 pair of stereo RCA jacks
  • Speaker Level Input: Molex plug input for supplied 8-pin harness

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

 

Product reviews from the Crutchfield Labs (what are the Labs?)

Video: Alpine V-Power Car Amplifiers

Video: Alpine V-Power Car Amplifiers

by Zak Billmeier
 
Video: Alpine V-Power Car Amplifiers

Alpine made their V-Power amps 40% smaller for 2013, so they'll fit in more places than ever. Plus they employ some smart technology called Enhanced Shutdown Performance, which rolls back the output...

 
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Alpine MRV-F300 Reviews

Average Customer Review:

6 people say:

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Filter by rating:
5 out of 5

Great Product

Written By Anonymous, NJ on Monday, September 15, 2014
 
Plenty of power. Goes louder than you care to listen to. Performs great at all volumes and music styles.
Was this review helpful?    Yes | No
 
4 out of 5

Alpine MRV-F300

Written By Anonymous, herndon pa on Wednesday, August 20, 2014
Crutchfield Customer Review (What's this?)
 
seems like a nice amp so far
Pros:
easy hook up like the way it turns on thru the speakers
Was this review helpful?    Yes | No
 
4 out of 5

great amp for the price

Written By Anonymous, langhorne, PA on Saturday, March 29, 2014
Crutchfield Customer Review (What's this?)
 
For the price it is a great simple 4 channel amp. Takes ups little room in my jeep wrangler under my rear seat. doesn't over heat easily. Puts enough power to all of my speakers(Polk) and gives them more clarity and base
Pros:
Price, size, performance, resistance to over heating
Cons:
None that I can think of see or hear
Was this review helpful?    Yes | No
 
5 out of 5

MRV-F300 Surprisingly powerful

Written By Protechnician, Winchester, CA. on Thursday, February 27, 2014
 
When I un-boxed this amp I'll admit that I was dubious about the power rating. Now all I can say is WOW! I have it's older brother (MRP-F300) installed in my wife's car and that amp is great (I have it running all 4 of her speakers and the sub-woofer) and her system sounds awesome! The MRV-F300 amp is almost 1/2 the size of the MRP-F300 but I thinks it's actually a bit more powerful. The power output seems to be constant over the entire frequency range. Don't shy away from the class D in the description. It is a digital amplifier and the sound is incredible. It actually overpowers my Alpine S-Type 12 inch sub (channels 3 and 4 bridged to 150w RMS) when compared to the Sony XM-1S dedicated mono sub amp that I was using before. Still tuning my system but I'm very happy with this unit and I'm sure you will be, too.
Pros:
1. Very small form factor (~8"x8"). 2. Seems to have plenty of power (even for a 12" Alpine type S sub-woofer in a sealed box). 3. Power output seems to be constant over the entire frequency range. 4. Digital amplifier = great sound
Cons:
None
1 out of 1 people found this helpful
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5 out of 5

Clean

Written By DLW, Arlington, TX on Sunday, January 12, 2014
 
Small. Clean. Easy to install. Plenty of power. I've got this amp powering a set of Boston Acoustics Pro 5.5s and 6.5s. Although these speakers can handle as much as 400 watts rms, this amp does enough to get them PLENTY loud AND clean. It fits under my seat and doesn't even warm up at highly sustained volume levels. Entry level amp? I'd like to think not!
Pros:
Size, more power than advertised, nice design
Cons:
Wish I had some, but I'm satisfied with what I got
2 out of 2 people found this helpful
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5 out of 5

alpine amp

Written By ron p, bremerton, wa on Monday, June 24, 2013
Crutchfield Customer Review (What's this?)
 
easy to install, works great. instructions very clear even for a beginner
Pros:
small compact and versitile
8 out of 10 people found this helpful
Was this review helpful?    Yes | No
 

2 questions already asked

It's this a mono block amp? [ isaac  Jun 05, 2014 ]
4 answers
  • No, this is a class D 4 channel amplifier. However it can be bridged to run 2 channels to 2 woofers, or - as I have done - you can have front 2 channels @ 50 watts each and the other pair bridged to woofer. I have it hooked up to 2 6" polk 2 way door speakers, and the rear channel bridged mono to my Rockford fosgate 10" woofer. And it really ROCKS !! [ Daniel   Jun 08, 2014 ]
  • This is a four channel amp (2 stereo pairs) and you can bridge either pair to get mono. I'm not entirely sure what you mean by block. I run a setup with 3 way separates on 2 of the channels and have the other two bridged to run a dual 12" sub at 4 ohms in mono. It does the trick. [ Charlie   Jun 05, 2014 ]
  • no [ GARY L   Jun 05, 2014 ]
  • No this is not a mono block amp. This amp Handles up to 300W maximum power @ 4 ohms bridged (150 x 2) Up to 75W RMS power per channel @ 2 ohms and up to 50W RMS power per channel @ 4 ohms. The mono-block version is the Alpine MRV-M500 [ Michael   Jun 05, 2014 ]
What's the difference between this and the Alpine Mrp f300? [ me  Apr 10, 2014 ]
1 answer
  • Thanks for your question. For information on comparing two or more models 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 and help you make the best choice for your system and your budget. [ Krissy Staff  Apr 11, 2014 ]

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For a more in-depth review and enhanced detailed information on the Alpine MRV-F300, please visit the Crutchfield website product page (/ISEO-rccbcspd/p_500MRVF300/Alpine-MRV-F300.html ).