Alpine MRP-F300

V-Power Series 4-channel car amplifier
50 watts RMS x 4

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Item# 500MRPF300

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Overview
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Staff Reviews
Customer Reviews
Category Info
Accessories

Our take on the Alpine MRP-F300

by Buck Pomerantz

V-Power amplifiers deliver the sound quality that made Alpine famous. Highly efficient power supplies housed in sleek black casings guarantee that these amps stand out in performance and appearance. The thermal management system dissipates heat and saves power, so your V-Power amp will run reliably for years to come.

The MRP-F300 4-channel amplifier sends 50 watts RMS to each of your front and rear speakers, or switches to 2-channel mode to power a pair of subwoofers. You can also switch to 3-channel mode, then power a subwoofer with 150 watts RMS while the other two channels power a pair of full-range speakers.

High- and low-pass filters put you in command of the frequencies that reach your speakers, while the bass boost is armed with plenty of low-end punch. Preamp- and speaker-level inputs allow you to connect this amp in almost any vehicle. Let a V-Power amplifier transform the sound of your car's audio system.

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)
2-, 3-, or 4-channel output
variable high-pass/low-pass filters (50-400 Hz, 12 dB/octave)
selectable bass boost (12 dB at 50 Hz)
subsonic filter (15 Hz, 18 dB/octave for channels 3 & 4)
MOSFET power supply
CEA-2006 compliant
STAR Topology (minimizes internal noise and prevents ground interference)
speaker- and preamp-level inputs
gold-plated screw terminals
fuse rating: 25A x 2
8-gauge power and ground leads recommended — wiring and hardware not included with amplifier
10-11/16"W x 2-7/16"H x 9-9/16"D
warranty: 1 year
Our 60-day money-back guarantee

Note: Sorry, Crutchfield cannot ship Alpine products to Guam or Puerto Rico.

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

Features and specs chart | What’s in the box? | In-depth notes

Features and Specs

Performance
RMS Power Output (Watts x Channels) Loading...	50 x 4
Peak Power Output (Watts x Channels) Loading...	N/A
Power at 2 Ohms (Watts x Channels) Loading...	75 x 4
Bridged Power (Watts x Channels) Loading...	150 x 2
Minimum Impedance Bridged Loading...	4
Minimum Impedance Unbridged Loading...	2
Best Frequency Response Loading...	20-20k Hz
THD at Rated RMS Power Loading...	1%
Signal to Noise Ratio Loading...	80 dB
Input Voltage Loading...	14.4v
Features
Amplifier Class Loading...	AB
Low-Pass Crossover Frequency Loading...	50-400 Hz
Low-Pass Slope (dB/octave) Loading...	12 dB/oct
High-Pass Crossover Frequency Loading...	50-400 Hz
High-Pass Slope (dB/octave) Loading...	12 dB/oct
Bass Boost Loading...	+12 dB
Bass Boost Frequency Loading...	50 Hz
Fan Cooled Loading...	No
Fuse Rating Loading...	50
Speaker Level Inputs Loading...	Harness
Preamp Outputs Loading...	1 pair
Width (inches) Loading...	10-11/16
Height (inches) Loading...	2-7/16
Depth (inches) Loading...	9-9/16
Parts Warranty Loading...	1 Year
Labor Warranty Loading...	1 Year

Product Research

What's in the box?

Download owner's manual

Four channel amplifier
Two 25 amp fuses (installed)
7" Speaker-level input harness (8-pin Molex plug on one end and bare wires on the other)
2 Terminal covers
4 Self-tapping hex-head screws (M4 x 20mm)
4 Machine screws for securing terminal covers (M3 x 12mm)
Owner's Manual (English/French/Spanish)
Customer Care Registration card

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
Controls
Connections

Features

Power Supply: The MRP-F300 amplifier's power supply uses MOSFETs to convert DC battery voltage to the higher DC voltages needed for high power. It supplies positive and negative voltages around 0V, rather than around 6V as with conventional single-polarity power supplies. The result is higher power levels and a dynamic range wider by as much as 10dB.

Inputs: The amplifier offers both line-level and speaker-level inputs for 4 channels. The supplied speaker-level input harness allows you to connect this amplifier to a receiver without preamp outputs; aftermarket or factory.

Line Outputs: This amplifier has a pair of non-fading stereo RCA line outputs. You can use these outputs to daisy-chain another amplifier without having to run additional signal cables from the receiver.

Terminal Covers: The amp comes with two plastic covers that protect and insulate the RCA, power, and speaker connections. Four supplied machine screws attach the covers to the amplifier.

Controls

Gain Controls: This amp has independent front and rear channel gain controls.

Crossovers: Both front and rear channels have independent high-pass and low-pass crossovers. The crossover points are continuously variable from 50-400 Hz and the slope of both is 12dB/octave. Each set of channels has a high-pass/low-pass/off switch.

Subsonic Filter: This amp utilizes a subsonic filter at 15Hz to eliminate super low frequencies that can rob power and damage speakers. The subsonic filter operates at all times; it cannot be turned off.

Bass EQ: The Bass EQ circuit provides a fixed boost of 12dB at 50 Hz for the rear channels only. The Bass EQ can be turned off and does not function when the amp's rear-channel crossover is set to high-pass operation.

Connections

Left Side Of Amplifier:

GND (ground): gold-plated screw terminal, 0.33" wide
Battery: gold-plated screw terminal, 0.33" wide
Remote: gold-plated screw terminal, 0.33" wide
Speaker Outputs: gold-plated screw terminals (8), 0.33" wide

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

Right Side Of Amplifier:

Line Inputs: 2 pair of gold-plated stereo RCA jacks
Line Output: 1 pair of gold-plated stereo RCA jacks
Speaker Level Input: Molex plug input for supplied 4-pin harness

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

Video: Alpine V-Power Amplifiers

Ken Nail, J.R. Stoffel

1/21/2009

based on 1 rating

Learn about some of the features that make Alpine V-Power amplifiers a strong choice for great-sounding car audio.

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1-10 of 51 items >> Sort Results By: Date Reviewed | Rating | Helpfulness

5 out of 5

Nice Clean Amp

Written By Johnny Hotrod, New York on Monday, February 06, 2012

Excellent Amp, smooth clean, clear power. I liked it so much i bought another for my wife's car.

Pros:

No Problems

Cons:

Not Yet!