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Alpine MRP-M450

Mono subwoofer amplifier
400 watts RMS x 1 at 2 ohms

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Item #: 500MRPM450
 

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Our take on the Alpine MRP-M450

by Ken Nail
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

Outstanding audio performance — you expect it when the amp is an Alpine. Alpine's V-Power amplifiers supply the high level of performance you want without shaking loose too much of your hard-earned cash.

The MRP-M450 mono subwoofer amplifier will power your subwoofer with 220 watts of power. Add a second sub and the MRP-M450 pumps out 400 watts of power — enough to get almost any car shaking. The variable low-pass filter adjusts the frequency output to match your system, while the Bass EQ lets you dial in some extra boost on the lows. A subsonic filter eliminates inaudible, ultra-low bass notes for cleaner output.

The amp's machined-metal heatsink keeps the internal parts cool and distortion low even when you're cranking the volume. Gold-plated screw terminals and RCA connections resist corrosion that can degrade signal performance.

See more info on this item

Highlights:

  • mono subwoofer car amplifier
  • 220 watts RMS x 1 at 4 ohms (400 watts RMS x 1 at 2 ohms)
  • variable low-pass filter (50-200 Hz, 24 dB/octave)
  • tuned Bass EQ (0-12 dB bass boost at 50 Hz)
  • subsonic filter (15 Hz, 24 dB/octave)
  • 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: 20A x 2
  • 8-gauge power and ground leads recommended — wiring and hardware not included with amplifier
  • 9-3/4"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
Performance
RMS Power Output (Watts x Channels) 220 x 1
Peak Power Output (Watts x Channels) ---
Power at 2 Ohms (Watts x Channels) 400 x 1
Bridged Power (Watts x Channels) ---
Minimum Impedance Bridged ---
Minimum Impedance Unbridged ---
Best Frequency Response 20-200 Hz
THD at Rated RMS Power 1%
Signal to Noise Ratio 65 dB
Input Voltage 14.4v
Features
Amplifier Class D
Low-Pass Crossover Frequency 50-200 Hz
Low-Pass Slope (dB/octave) 24 db
High-Pass Crossover Frequency N/A
High-Pass Slope (dB/octave) N/A
Bass Boost 0-12 db
Bass Boost Frequency 50 Hz
Fan Cooled No
Fuse Rating 20 x 2
Speaker Level Inputs Harness
Preamp Outputs No
Width (inches) 9-3/4
Height (inches) 2-7/16
Depth (inches) 9-9/16
Parts Warranty 1 Year
Labor Warranty 1 Year
Product Research
What's in the box?

Download owner's manual

  • Mono amplifier
  • 8" Speaker-level input harness (with 8-pin Molex plug on one end and bare wire on the other end)
  • 2 Terminal covers
  • 4 Self-tapping hex-head screws (M4 x 20)
  • 4 Machine screws for securing terminal covers (M3)
  • 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
Inputs and Outputs

Features

Power Supply: The MRP-M450 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.

Low Pass Filter: The amp is equipped with a 50-200Hz variable low-pass filter with a slope of 24dB/octave.

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

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

Inputs: The amplifier offers both line-level and speaker-level inputs for 2 channels. The supplied speaker-level input harness allows you to connect this amplifier to a receiver without preamp outputs, either aftermarket or factory.

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

Inputs and Outputs

Left Side Of Amplifier:

  • GND (ground): Gold-plated terminal strip, 0.35" wide
  • Battery: Gold-plated terminal strip, 0.35" wide
  • Remote: Gold-plated terminal strip, 0.35" wide
  • Speaker Output: Gold-plated terminal strips for 1 speaker, 0.35" wide

Right Side Of Amplifier:

  • Line Inputs: 1 pair of gold-plated stereo RCA jacks
  • Speaker Level Input: Molex plug input for supplied 8-pin harness
 
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Alpine MRP-M450 Reviews

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3 out of 5

Alpine MRP-M450

Written By Anonymous, elkhart,IN on Thursday, October 14, 2010
 
I had this amp pushing a pair of Mtx 6000 thunders that are 250rms. And it sounded great. But I'm more of a deep breath takeing bass head my self so I hooked them up to a pair of 15 rockford P2. Now both the 10in Mtx's and the 15in rockford's are 250rms and 500peak. But the alpine could not keep the same constint bass with the 15's as it did with 10's so in all great amp for 10's. But not for 15's. Still good amp for the price..
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5 out of 5

Great Amp

Written By Chris, Nwe Mexico on Monday, September 06, 2010
Crutchfield Customer Review (What's this?)
 
Great amp. I have had this thing for alomost 3 years now. Has powered my Alpine
Type-S SWS-1243D 12" Dual 4-ohm Component Sub in the trunk of car. Great sound
puts out plenty of power. The amp is installed in the trunk of the my car as well. Never
gets hot and I have never had any problems. I have reccommended this amp to many fo
my friends.
1 out of 1 people found this helpful
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5 out of 5

Great Amp

Written By Steve, Surfside Beach, SC on Thursday, November 13, 2008
 
Great Amp. It's running two MTX Thunder 4500's in a sealed enclosure at 4 ohms. It's pushing some serious low end, and is barely breathing. Very good amp.
4 out of 4 people found this helpful
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5 out of 5

great amp

Written By Lou, LI New York on Thursday, November 13, 2008
Crutchfield Customer Review (What's this?)
 
I hooked this up to a fosgate stage2 10" and i could not believe the power, clean sound and it hits hard!!! great price and looks great...i would recommend this amp..you cant beat this price for alpine quality...
3 out of 3 people found this helpful
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5 out of 5

High Quality Bass Amp for Bargain Price

Written By Ronald, Chicago, IL on Thursday, November 06, 2008
Crutchfield Customer Review (What's this?)
 
I recently installed an Alpine MRP-M450 amp in my 2008 Subaru WRX. I'm
using it to power a dual voice-coil 10" Bazooka bass tube. I'm also using
an Apline MRP-F250 to power my mids and highs. For the price, the MRP-
M450 is a pretty sweet little bass amp. I'm running both 4 ohm voice coils
on my Bazooka tube in parallel, presenting a 2 ohm load to the Alpine amp.
It handles the load like a champ, putting out plenty of clean, well-controlled
bass. It also runs fairly cool considering that I'm using it to drive a 2 ohm
load. I'm very pleasantly surprised at the power of this amp. I have an
Alpine PDX.1000 mono amp running two Alpine Type-S 10" subs in small
sealed enclosures in my other car and I have to say that the combination of
the MRP-M450 and 10" DVC Bazooka compares very favorably for a lot less
money. Of course the MRP-M450 and Bazooka tube take up a lot more
space, so that's the major tradeoff. If you have the room in your
trunk/hatch for a larger, more efficient sub, the MRP-M450 can kick out a
surprising amount of bass for the money. If you have / need to run your
subs in a small sealed enclosure, then you might want to spend the extra
bucks for a more powerful bass amp to offset the lower efficiency of small
sealed subs. Otherwise, if you have a bit of room to spare, this is a killer
setup and an amazing value.
5 out of 5 people found this helpful
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5 out of 5

thing bumps

Written By Phillip, Maryland on Sunday, September 21, 2008
Crutchfield Customer Review (What's this?)
 
great little amp i paired it with a kicker cvr 12 and this thing hits hard.
4 out of 4 people found this helpful
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5 out of 5

Alpine MRP-M450

Written By clay, Charlotte,NC on Tuesday, September 16, 2008
Crutchfield Customer Review (What's this?)
 
Great quality!
1 out of 3 people found this helpful
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5 out of 5

awsome

Written By Brian, Westfield, MA on Tuesday, September 02, 2008
 
Wow I can't believe the performance of this amp, I have it pushin two 10" Kicker Comps and it is plenty of power. It took me awhile to finally buy this amp but man, am I glad I finally did!
1 out of 1 people found this helpful
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5 out of 5

Exactly what I was looking for...

Written By Luis, Melbourne, FL on Monday, August 11, 2008
Crutchfield Customer Review (What's this?)
 
I purchased this amp to push a Shallow Kicker 8" Sub in a factory concealed box in my expedition. The sound is very clean and was exactly what I was looking for.
3 out of 3 people found this helpful
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2 out of 5

400 watts?

Written By Matthew, Mt.Pleasant,TN on Monday, July 21, 2008
Crutchfield Customer Review (What's this?)
 
The amp looks good. The size is great, but 400 watts? If you are running it
2 ohms and have 14.4 volts at the amp.......mabey. I am running it on 2 10"
fosgate P1's- in a qlogic 1.25/side slot port box. The gain is max, the eq
boost is max and the subs sound like they are starving for power. Mabey I
got a lemon. First Alpine amp bought, last Alpine amp bought.
4 out of 31 people found this helpful
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5 out of 5

Great Amp for a Great Price

Written By Diego, Boston, MA on Sunday, July 20, 2008
Crutchfield Customer Review (What's this?)
 
Great amp for the money. I'm currently running it on the speaker input and it works great, also let me say that i not disappointed at all with it. I have it running a Pioneer TS-W307D4 on a sealed box, about 1/4 of the gain up and it hits every note the way its suppose to. If someone is having trouble with the amp its probably because you did something wrong.
2 out of 2 people found this helpful
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1 out of 5

disappointed

Written By vincent, california on Sunday, July 13, 2008
Crutchfield Customer Review (What's this?)
 
judging by the reviews i was expecting good amounts of bass with good class D efficiency but the output was not what i had hoped for. Seemed like half output so maybe it was a defective. But also i was hoping for richer, more reverberating bass since it was an alpine but it sounded like a thud on a wall. Seems like kenwoods have better bass than my eclipse head unit (at the loss of mid and upper vocal clarity) but i had put my non fading preouts on mono and used a rca y splitter but no difference. really disappointed.
1 out of 12 people found this helpful
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5 out of 5

Alpine MRP-M450

Written By Austin, Missouri on Thursday, July 10, 2008
Crutchfield Customer Review (What's this?)
 
It is awesome! It powers my 10" punch stage 3 perfectly! it makes that thing beat SO hard, but it stays SO cool! i couldnt have asked for anything better!
2 out of 3 people found this helpful
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5 out of 5

Best Amp. for the money

Written By Michael, Akron, OH on Friday, July 04, 2008
Crutchfield Customer Review (What's this?)
 
I have this Amp. running a Kicker 12" enclosed truck subwoofer, rated at 400 watts rms also. This amp matches this sub perfectly. There's absolutely no concerns about heat; even after playing the amp loud for hours, it's still room temp. The accuracy is impeccable. If I'm playing something that pounds, it hits hard. If I'm playing a live CD, the bass suites the sound you would expect to hear from a concert. This amp has more than enough power in reserve to drive just about any sub. And for the price, it's the best buy I've ever come across. If there are any of the 4 channel 40 X 4 amps left at the same price in a month or so, I'll buy one
just to have it.
5 out of 5 people found this helpful
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5 out of 5

Nice!!!!

Written By nathan, Belton, Tx on Saturday, June 07, 2008
Crutchfield Customer Review (What's this?)
 
i have this amp pushing 2 10 kicker cvr's..i didnt think it would make my
subs sound as good as they do. i am VERY satisfied..i mean for the price u
simply cant beat that maan. i highly recommend
3 out of 3 people found this helpful
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5 out of 5

MRP-M450

Written By Jose, San Antonio, TX on Tuesday, June 03, 2008
Crutchfield Customer Review (What's this?)
 
Wow!!! Endless power! I have this pushing two JL Audio 8" 4 ohms, bridged down to 2 ohms in a Q-Logic box for my 2003 F-150 Super Crew. Nobody believes they are 8's. I have to show them my box. But this amp is clear and powerful. A+++
2 out of 2 people found this helpful
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5 out of 5

WOW!!!!

Written By Michael, Sturgeon Bay, WI on Tuesday, May 27, 2008
Crutchfield Customer Review (What's this?)
 
I bought this amp just under a month ago and wow! I hooked them up to my 2 old MTX Thunder
4500(450 Max ea.) wired parallel into 2 OHMS and I barely had the gain and boost up off of zero and it was incredibly clean, loud and deep! Now I hooked the amp to two alpine type e 12" subs also wired
parallel into 2 OHMS and it is too much for my trunk too handle at loud volumes!(rattling..another
project lol) Still sounds clean,loud, and deep. It
doesn't even get hot after hours of play, barely warm. I would like to know though how much max
power is estimated at 2 ohms. DEFINITELY would
recommend this Amplifier to Anyone!
4 out of 4 people found this helpful
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5 out of 5

Reliable Quality

Written By Alex, California on Sunday, May 18, 2008
Crutchfield Customer Review (What's this?)
 
Name Brand quality expected and delivered. This amp was an excellent buy, you get what you expect. No problems with it at all in any condition. I play music the loudest I can all the time for hours while driving and performance remains excellent. Pushes at peak power levels easily, even for extended time. Makes my sub hit clean and hard, you'd think it was pushing at twice the power. You will be making a safe decision by buying this, and a great investment.
1 out of 2 people found this helpful
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5 out of 5

Alpine MRP-M450

Written By Mark, Orange County, CA on Friday, May 09, 2008
Crutchfield Customer Review (What's this?)
 
I just put this amp in my 2005 Ford FiveHundred, and it sounds amazing. I
have it hooked up to two 10" Rockford Fosgates and they shake my car. I
was worried that the large size of my car would be too much for the small
wattage, but it performs great. Totally recommend this product.
4 out of 4 people found this helpful
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5 out of 5

Alpine MRP-M450

Written By Kentra, Seneca Falls, NY on Wednesday, April 23, 2008
Crutchfield Customer Review (What's this?)
 
I was told by Crutchfield Customer service that this amp would Power my 2- 12" type E subs. and it does as it should. With my satalite receiver set at -0- on the bass, and with the amp all the way down, with the volume at 20, it vibrates the mirror. With the bass at -3- and the amp up only 20% of the way( where i leave it). The bass is massive. With teh bass at -9- and the volume at 15!!! the bass is just, how do i say? WAY TO DARN LOUD.... But the best part about it all is; how Clear and crisp the sound is.

Apline all the way!
3 out of 3 people found this helpful
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5 out of 5

Banana for your Gorilla??

Written By Alex, Rochester, MN on Tuesday, April 22, 2008
Crutchfield Customer Review (What's this?)
 
I was lucky enough to get one of the last Alpine E 12 / MRP 450 packages,
and let me tell you, this amp KNOCKS the subs... i have them hooked into
the rears of an in dash DVD player and its amazing. Theyre louder than my
old Kicker L5 12inch / infinity 22oo watt amp. Really, this amp is the real
deal. Alpine amps with Alpine subs sound like Gorillas beatin up your trunk.
Buy it
2 out of 2 people found this helpful
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1 out of 5

Alpine MRP-M450

Written By chris, Murfreesboro, TN on Friday, April 18, 2008
 
This amp is a real let down. I have only owned it for a year and a half and
it has given up.
3 out of 7 people found this helpful
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5 out of 5

07 Wrangler

Written By Wrangler07, 07 Wrangler on Friday, March 28, 2008
 
I hooked this up to a 10" polk sub and it sounds amazing. Makes my sub
sound like a 12". Alpine done did it again.
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5 out of 5

Big BASS

Written By Ray, Spokane WA on Tuesday, March 18, 2008
Crutchfield Customer Review (What's this?)
 
I have this paired with the JL Stealth box for a 2001 f150 and it has more
power than I can handle listening to, this is a good thing??. The box has a
10" 3v2 wired at 3 ohms so I am getting a little over 300w rms. It is so
crisp and hard hitting I absolutely love it plus another great advantage is
the size, it is hidden real well behind the rear compartment door.
2 out of 2 people found this helpful
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5 out of 5

nice amp!!

Written By manny, seattle wa on Wednesday, March 12, 2008
Crutchfield Customer Review (What's this?)
 
this is a great amp! just recieved and installed today and have to say so far
that this amp has plenty of power, plus cruthfield is the best at what they
do! customer for life!
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5 out of 5

Very Nice Amp!!!

Written By Michael, Kapaa Kauai, HI on Friday, February 29, 2008
Crutchfield Customer Review (What's this?)
 
A Sweet Amp!!!
I have this amp hooked up to two 12" Alpine type E Subs and a Alpine CDA-9885. Its a lot louder if you only have 1 sub hooked up but I liked it when i hooked up my two. A little clearer bass. Because I live in Hawaii its always hot and humid so I needed an amp that would not overheat under hot weather. All in all its a great amp and I'm looking to put 1 in my brothers car soon.(and maybe a second one in mine)
2 out of 3 people found this helpful
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5 out of 5

great amp

Written By mella 8, columbus,ohio on Friday, February 15, 2008
 
This joker hits hard i have it hooked to (2)12" Kenwoods. But for me this is a match made in heaven the 2 ohm load is awesome ,I'm not even pushin' the amp hard and you can hear me tearin' up the ground for at least 300 yards away super clean too. My Kenwoods are in a 1.0cb/ft sealed box and all i can say, (with the assistance of a Kicker kx3 crossover) I now have two Gorillas tryin' to escape my trunk! Thanks Crutchfield, It's no mystery why you're #1,and have been on the cutting edge of electronics for 30years!
3 out of 3 people found this helpful
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5 out of 5

surprised!

Written By marty, Toledo, OH on Thursday, February 14, 2008
Crutchfield Customer Review (What's this?)
 
Recently, I bought this amplifier to replace an existing amplifier in my car. My stereo consists of an Eclipse CD-3100 headunit with Eclipse Sirius tuner and Auxiliary input, an Infinity 4-channel amplifier feeding 2 Infinity Kappa 5x7's in the front and 2 Infinity Kappa 6x9's on the deck. I had a Rockford 301s amp bridged to a DVC subwoofer in a custom ported box. What a difference when I simply upgraded to a better, MUCH better, amplifier. Unbelievable. Honestly. On the factory settings, which were at the minimum, there was MORE coming from the subwoofer than I thought was possible. The gain on the hu went from +6 to +2, and thats way more than I ever experienced with the old amplifier. If you want the best, this is it. Seriously.
2 out of 2 people found this helpful
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5 out of 5

Great Mono Amp

Written By Jason, Marysville, WA on Sunday, February 03, 2008
 
I've got this powering one Infinity Kappa 10" sub wired for a 2 ohm load and it absolutely pounds with ease. The sub is rated from 350w RMS to an astonishing 1400w max. (at 2 ohms) but I get the feeling that this amp could still do damage to it given full gains. It's quite powerful and does not get hot whatsoever. I like the subsonic filter feature which can protect your sub a lot when delivering thunderous amounts of bass. The unit also leaves a small footprint so it's easy to hide pretty much anywhere in your vehicle. Another great product from legendary amp builders.
3 out of 3 people found this helpful
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5 out of 5

Simply Amazing

Written By Phil, Silver Spring MD (Washington DC) on Monday, August 06, 2007
 
Heres my setup
1 Alpine CDA-9883 HU w/ IPod cable
4 Alpine Type-R 6 1/2"
2 Alpine Type-R 12" subs @2ohm
2 Alpine M-450D amps
1 RockfordFosgate 1.5 Farad Cap
0Gauge Wireing

these amps powered these subs to perfection. they have out bumped everything from kicker L7's to JL w3's. ive only been embarassed by one guy who was pushing 4 15 L7s
these amps are clean and crisp. i wouldnt think of buying anything except Alpine
8 out of 8 people found this helpful
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5 out of 5

Great Value

Written By Dom, Detroit, MI on Monday, June 18, 2007
 
I have this amp powering two 12' Alpine Type-S subs. It provides plenty of power... for the price it's hard to beat.
1 out of 2 people found this helpful
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5 out of 5

Alpine MRP-M450

Written By Gary, Maryland on Thursday, May 17, 2007
Crutchfield Customer Review (What's this?)
 
Excellent amp. Installation was pretty easy for me (this was the first one I've ever installed). I use it to push a single Kicker Comp VR 07CVR104 10" Sub. They both work perfectly together. The single sub and amp produce plenty of bass, there is no reason for me to get two subs.
2 out of 2 people found this helpful
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5 out of 5

One word, NICE

Written By Kenan, Morrison, IL on Thursday, May 10, 2007
 
I originally bought this amp back in the summer of '06. I hooked it up to push two Alpine E 12" subs. I DON'T recommend two subs for this amp. Hooking it up to one was LOUDER than the two put together. Recently switched vehicles and it now pushes a single 8" bazooka tube in my pickup. This thing hits! The amp is turned down quite a ways and so is the head unit. Very nice when hooked up to a DVC single sub.
6 out of 8 people found this helpful
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5 out of 5

Great amp for price

Written By Oshee, Menominee, MI on Thursday, March 01, 2007
 
I bought this amp to power a JL W3. I was very impressed with the sound quality and power output, even at the higher power levels. Excellent value, you get a lot more than you paid for.
1 out of 1 people found this helpful
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4 out of 5

Alpine MRP-M450

Written By T R, Scottsville, Va on Saturday, February 17, 2007
 
Its a great amp to start-out with,and performed well in a Bronco w/ 2 Infinity 12" 1252 Reference Series subs. when hooked up to two subs, it sounded ok, but when i hooked up the amp to one sub, it pumped out something great. i would recommend this amp for a beginner of sorts b/c it doesn't overheat, and it sounds really well cruising thru the town. it will deff. put some Thump in the Trunk!
3 out of 5 people found this helpful
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5 out of 5

AWESOME AMP!!!

Written By Shane, Riverton, UT on Sunday, December 31, 2006
 
I had no problems on the install with this product. The manual and install guide gave plenty of info. Performs very well with little heat output. It is great for its price and drives my dual 12" Alpine subs like a champ! ANOTHER AWESOME ALPINE PRODUCT!
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5 out of 5

JUST RIGHT FOR MY LOW-KEY LIFE

Written By Clifford, Cincinnati, OH on Sunday, December 24, 2006
Crutchfield Customer Review (What's this?)
 
I love this little amp. I have it running a single 12" Kicker CVR and it puts out amazing bass, with great sound quality. I have had some ridiculously loud systems in my day and i've pretty much out-grown that. Now its all about sound quality and if that is what you are looking for (but it can be loud if you want it to), i highly recommend this amp for you
5 out of 5 people found this helpful
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5 out of 5

Screams Quality

Written By Len, Phoenix, AZ on Sunday, December 10, 2006
Crutchfield Customer Review (What's this?)
 
I am using this amp to power a single 10 inch Infinity Kappa Perfect. For those interested in sound quality, rather than sheer volume. This combination is hard to beat. On a scale of 1-5 would give it a 10. Inexpensive, high quality amp. Very accurate reproduction of music I've listened to for many years over many systems. This amp is second to none.
4 out of 4 people found this helpful
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5 out of 5

Perfect

Written By Garrett, Kalispell, Montana on Sunday, August 27, 2006
Crutchfield Customer Review (What's this?)
 
To make this short and simple, this amp does what it needs. I have it hooked up to two 12" Kicker Comps with 150rms each. Small, doesn't over heat, and full of power. No bull, no regrets.
5 out of 5 people found this helpful
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4 out of 5

Great amp for less!!

Written By Ray, Wisconsin on Saturday, August 19, 2006
 
I had my share of amps and for $200 this is a hard choice to pass I have it hooked up to a 12" 4 ohm DVC 500rms 1000 peak, I've hokked this sub up to alot of amps that friends have loaned me- (Rockford 500rmsover heated after 15 min.- Pioneer 900 watt fried it- AUDIOBAHN 800 mono and no good, and few others well take guess.) But for a quick inexpensive temperary amp it is the best power source yet - 220rms@4om 400rms@2ohm and I have this sub wired in 8ohm and is louder than most steros that most spends many hundreds to get. So please don't let anyone fool you, when you get it and are angry with it just try and recheck your set up or just play around with the turner nobs you'll see what I mean!!
5 out of 12 people found this helpful
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5 out of 5

Solid and Reliable Amp

Written By Kelvin, Reno, NV on Monday, August 14, 2006
 
I bought this amp to power two Kenwood KFC-2510 subs in parallel and they sound perfect. It's Class D circuitry also allows it to run cool even at mid-high volumes. I love it's small footprint because I was able to hide it just behind the spare tire making for a very clean install.

Now all I need is to buy tons of Dynamat to deaden the annoying rattling in the trunk area and somehow increase the sound quality even more.
5 out of 5 people found this helpful
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5 out of 5

Alpine Mono Amp

Written By Deathwish99, Des Moines, IA on Monday, July 24, 2006
 
I just bought 2 of these amps to power my 2 subs and I have to say they hit hard, even with one amp hitting for both speakers its aneough but now that I have 2 in my grand prix the trunk lid is literally jumping up and down and so is spoiler, If I didnt buy 2 of these I wouldnt probably of rated the amp so nicley but with 2 of them they sure can put out enough power to please just about anyone.
3 out of 4 people found this helpful
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5 out of 5

Alpine MRP-M450

Written By Willie, Austin, TX on Thursday, June 22, 2006
 
Great amp. Very small package with alot of power, perfect for under the seat. Make my JL Audio 12 hit harder than I would ever imaging.
7 out of 7 people found this helpful
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5 out of 5

Amp kickin it to the max!

Written By Patrick, New Orleans, LA on Monday, May 22, 2006
Crutchfield Customer Review (What's this?)
 
This amp makes my 12" Kicker hit so hard I had to order some dyno-mat the next day!! This amp is small and powerful, a great buy!
3 out of 4 people found this helpful
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5 out of 5

Good Stuff

Written By Barry, Medina, TN on Thursday, May 11, 2006
Crutchfield Customer Review (What's this?)
 
This amp was worth every penny. This amp pushes my two MTX 12's very nice. If you are looking for a good sounding amp under $200. This is the one!
10 out of 10 people found this helpful
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4 out of 5

Solid Performance

Written By Cameron, Franklin, IN on Thursday, April 06, 2006
 
This is only my second amp so i cant really compare it to many others. My first was a Pioneer 250 watt amp. This seems to push alot harder than my pioneer. It also seems to stay cooler than the Pioneer. I have this pushing a Power Acoustiks STW 10 and it is more than enough to fill the cab of my ranger with bass. Its also alot smaller than my Pioneer.
8 out of 8 people found this helpful
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5 out of 5

Alpine is awsome!

Written By Wesley, Hulett, Wyoming on Sunday, April 02, 2006
Crutchfield Customer Review (What's this?)
 
I just put this Alpine amplifier in my extended cab chevy pickup. I am running two 10" Alpine subs and it sounds absolutely incredible. I would highly reccommend this product to anyone.
12 out of 13 people found this helpful
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5 out of 5

My first Amp

Written By Rudy, Tracy, CA on Saturday, February 18, 2006
 
I have this Amp in my 2000 Civic Si hooked up to a Alpine SWR-1242D in a Qlogic 1.25 box and I have an Alpine CDA-9856 deck, this has been my fist amp; and what can i say it was a good buy. it pushes my sub like crazy, I never tought that one sub would sound so good.
20 out of 25 people found this helpful
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5 out of 5

Alpine MRP-M450

Written By harper, Columbus, GA on Friday, February 17, 2006
 
Absolutely mind blowing! I have this amp on 2 Alpine E-10's. Wasn't to sure about the speakers but WOW! I have them in a standard cab S-10 with a kenwood head unit. This amp pushes those speakers to the max, I didn't know two tens could hit that hard in a truck. I defintely reccomend it!
21 out of 22 people found this helpful
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1 out of 5

Absolutely loathesome

Written By aaron, Lubbock, TX on Thursday, February 09, 2006
 
This piece might as well have been DOA. For something rated at 400w at 2 ohms, it sounded more like 50w at 8 ohms. I double checked all the wiring, thinking maybe something had been jarred loose, but everything was fine. I am running an SWR-1242D (the dual 4 ohm sub), and I have it wired to receive a 2 ohm signal from the amp. Unfortunately, I can beat on the dash and make more noise than this amp can deliver. A total waste of time and money . This is the first and last Alpine I will ever buy.
13 out of 182 people found this helpful
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Add accessories for the Alpine MRP-M450

You'll need an amp wiring kit to install your new amplifier, as wiring is not included. See all categories & accessories

EFX 8-gauge Amplifier Wiring Kit Power and signal connections for your new amp
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Metra Crimp Tool and Connectors Package contains crimp tool and over 150 pieces
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S&G Wire Cutter/Stripper Tool Cuts and strips 12- to 22-gauge wire
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InstallCard: Amp or Equalizer Prepaid professional amplifier or EQ installation
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For a more in-depth review and enhanced detailed information on the Alpine MRP-M450, please visit the Crutchfield website product page (/ISEO-rccbcspd/p_500MRPM450/Alpine-MRP-M450.html ).