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Very nice size with more than enough power. Great for holiday music
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Item # 500MRVF300 | MFR # MRV-F300
$199.99 Earn up to 200 Rewards points
Alpine was thinking about versatility when they built their V-Power Series MRV-F300 4-channel amplifier.
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.
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.
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 input and control panel
Very nice size with more than enough power. Great for holiday music
Anonymous, Bloomington, Il
Average Customer Review(s):
Very nice size with more than enough power. Great for holiday music
Wow, what a difference! Just added this to my 2017 Legacy. The stock system was terrible. I put in new Infinity speakers front and back. It made the system better, but not great. The stock head unit needed help. This amp provided the punch needed. The sound is soooo good. It can be very loud and still crisp. Music sounds great again. Even talk radio is a lot better. Everything is just so clear. One of the best things about this amp is the size. It is very small. It fits easily under my front passenger seat. You can't see it. I'm very happy with this amp.
This amp is coming off a JVC double din stereo. Have infinity speakers X4. Front with the tweeters, in a 2011 silverado king cab. I can turn it up to 26 with crystal clear response just on the radio. My son built this system with a JL Audio 8" sub. For all you mature readers, I'm 56 and love to crank the old rock. These speakers are great. Clean sound, can even hear the tweeters. Hope you get the enjoyment I have out of these speakers.
Pros: Great sound for the money.
Cons: Nothing. They send the speaker holders free with the order.
Easy install. Simple set up for the speakers it's driving.
Pros: Performs as listed
Cons: None yet
Perfect amp for what I needed to accomplish and what more can I say it's Alpine.
Pros: Plenty of power for my application
Cons: Huh ??
Excellent amp ! I can't believe the difference it made in my system
Excellent amp. Used this with Alpine replacement speakers and Alpine W960 deck for a Sierra 1500. Great sound and quality.
I have had the MRV-F300 for around six months now it still impresses me when I turn it up , I use it for two sets of SPR-60C Alpine speakers also a great choice this amp although rated under what the speakers are still make some noise clear and loud, makes me wonder if the amp is stronger than the 50 RMS it is meant to push. The bass even hits on the 6 1/2" speakers I use it on . This amp is a good choice for those smaller in door speakers .
Pros: Small compact amp does not seem to over heat at least not yet , does not dim the lights at night
Cons: None that I have found
Great amp and small in size. Highly recommend
I have always preferred Alpine so when I wanted to upgrade the sound in my 97 Miata I installed my old Alpine head unit, replaced the door speakers with 6.5 Rockford fosgates (45 watts RMS) and fit some Rockford 65 watts RMS 6X9's in boxes positioned right behind the seat rests. The amp fit perfectly mounted behind the passenger seat and I velcro'd an equalizer just above the amp the knobs facing upward. For power I "stingered" 4 gauge amp wire to it and 4 gauge ground wire out. The results were outstanding. In the old days a guy would turn up the volume until it distorted, then down a little to prevent any damage....with this amp it just got louder and sound stayed clear and tight. I've got a bit of tinnitus for the first time in my life from the outstanding decibels this amp produces. I had it so loud while driving down mainstreet I lost the ability to drive actually, sensory overload I suppose. I've got to turn gains down to limit output before I go deaf. Had the top down and volume up one day and volume output reduced, I realized it was the amp responding to heat and simply protecting itself all while keeping music going. Once it cooled down regular output resumed. Efficient, low power consumption also minimizes drag on my little alternator so it's ideal. This was a perfect choice for many reasons...I would highly recommend, just take it easy on the volume. :)
Pros: Clear sound, bridgeable, low price, overheat protection, small size.
So far so good. Only had the setup installed for about a week. Definitely seems to put plenty of power to the speakers!
My first amp I ever owned was an Alpine 3553 back in 1991, I've had Fosgate Punch, Pioneer, Kenwood and many other amps since then, but was never quite satisfied with the sound I was getting compared to my old Alpine amp. Just installed this in my car and wow, the sound is amazing just like my first amp. I'm never going back to another brand. It just sounds better.
Cons: It doesn't print winning lotto tickets
Great for sound..love it
I was an audiophile in the 80's and remember Alpine to be at the top of the heap in the sound equipment arena. Things haven't changed. I installed this amp in an 04 Ford F150 S-cab, along with a a set of 4 Infinity Kappa door speakers and a new Alpine HU. I also added a Kicker 8" Hideaway subwoofer under the back seat. The sound in the truck now is simply incredible. Highs are crisp and the bass, while not overpowering, is tight, clean and filling. The Alpine amp provides plenty of power for a clean sound that will satisfy anyone moving up from a stock stereo system. I used 8 AWG wire to power the amp and 16 AWG speaker wire. This amp will give you a true 50 watts per channel and deliver it cleanly, all in a nice compact and attractive package. The blue power light on top is a nice, classy touch. This is top of the line gear; you will not be disappointed!
Pros: Clean power, low profile, attractive. Easy to hook up and mount.
Cons: Didn't get it sooner.
Since space comes at a premium in my Nissan 370Z this AMP is perfect all the power I need , providing clear crisp sound , set up was easy !
Clean, clear and powerful amp from Alpine. The MRV-F300 is a small powerhouse that sounds great and is easy to install.
Pros: Clean, small and powerful.
Absolutely what was needed for my daughters Fusion. Her stock stereo left a bit to be desired and we decided to put in an amp and new door speakers. I have used Alpine equipment since the 90's and always loved their products. We installed this amp to run a set of Rockford Fosgate Prime R152-S in the front door, and some Rockford Fosgate Prime R1525X2 in the back doors. This pairing of Alpine amp and the Fosgate speakers is a great match. I really have to praise the tech guys at Crutchfield. The Fusion we installed this in was so new that I could not find the wiring diagram anywhere. I called on a Saturday evening and they went above and beyond to find a diagram for my application. What a great company to deal with!
Pros: Small footprint, great sound and sleek design
Cons: The only real complaint I have is that the mounting 'tabs' are plastic.
I had an older Infinity already installed, so it was a matter of labeling the wires and switching everything over. Easy. I have an Alpine head unit, Clarions front and back, and an Infinity mono amp pushing a 10 inch sub. My only regret is hiding this new Alpine underneath the driver seat. No one will be able to ogle the lines. Also, it would be nice if Alpine laser-etched FF, FR, etc. over the inputs, rather than looking back and forth from the manual. It would streamline the process. Otherwise, no complaints-I'm jealous of my own stereo.
Pros: Small footprint. Stunning design. Even experimenting with too much gain it didn't distort. Loud and dense and satisfying sound. Nice.
Cons: I suppose pros and audio nuts wouldn't have the same comment, but it'd be nice if the inputs were labeled FF, FR, etc.
Clean amp. Driving four premium kenwood speakers without an ache.
Great amp for a small system
I did not know what to expect when installing a 4 channel amplifier into my car. I have Alpine SPS 610-C's on the front and 610's in the rear, and this amp really helps these speakers sing. I can turn my volume up to the point where it hurts my ears before my music begins to distort. The amp has a very small footprint, and gets warm, but not hot. I don't have much experience with amps so I can't really compare it to another model, but I am thoroughly satisfied with my purchase.
Pros: Small, powerful, doesn't get too hot
This is exactly what I expected from Alpine... the MRV-F300 is a very inexpensive 4 channel amplifier with great sound and reasonable power.
Pros: inexpensive, good sound and reasonable power for the price.
Cons: no pre-out for 2nd amplifier.
I'd slowly built up my car audio system with speaker components from Crutchfield but the system was lacking something. It was time to amp it up. Unboxing the Alpine unit in front of my family, they rolled their eyes and yes, there was even laughter. "What's dad doing now," joked my daughter. Then came the installation. They left me to my car and my garage and my silly ideas - so they thought. Hooked up, installed, and system tuned, it was time to take them all for a drive. They jammed, they rocked, they couldn't believe it. Who's laughing now?
Pros: Easy install, looks sharp, and allows me to set my front and rear LR speaker independently and set my crossover points on each.
Cons: More my fault...I first bought the single long audio cable and cut it into four long strands to run from the rear of my car to the front. Ditched that (messy and not enough cable) and opted for the 20-ft 9-wire which made install easy and clean.
This amp really makes my alpine speakers sounds great. The amp may be small but it packs quite the punch.
Pros: Size, sound, easy install
This amp has a compact footprint and packs a punch. Installed in an 88 for Ranger, connected to an Alpine head unit CDE-153BT, the amp is powering 5" infinty primus PR5002is in the doors and a Rockford sub R2S-1x10 prefab low profile box behind the seat. Truck is a standard cab. This setup is very loud and sounds great!
Pros: Size, quality, sound delivery and reputation.
First time running a 4 ch. and the sound over factory or aftermarket head units 18 watts rms is awesome. Hear things in favorite songs you've never heard before! Granted this is 50x4 and my speakers are 80 rms so I am coming up a little short but man you can't tell! Chose this one because of price. Picked up with a whole new system so I was trying to be frugal. Another great product from Alpine!
Pros: Size,quality, trusted brand
This amp was perfect for what i needed. It has more than enough power and fit great underneath the passenger seat of my 2015 jeep wrangler.
Pros: Great size, awesome power, plus the harness adapter saved a lot of headache when hooking up to a stock head unit
I have always upgraded every car stereo that I have ever owned. This amp was easy to install and also easy to tune. I have it hooked to the factory head unit in a 2015 Tacoma. The amp is pushing 4 Polk 6 1/2" and 2 Polk tweeters. I also added a 100 watt Bazooka tube. It really made a world of a difference. The truck sounds sweet. The amp easily fit under the front seat and packs quite a punch. I would recommend it to anyone.
Pros: The size, the power, and the ease of installation and tuning.
This is a great little amp from a reputable manufacturer. I installed this with no problem under my drivers side seat in my Tacoma DoubleCab. Plenty of flexibility for running different setups and easy tuning . I am using this amp to run Polk Audio DB 6 1/2 components up front and Polk Audio DB 6 1/2s in the rear. The setup rocks!!!! If you're looking at this amp just go ahead and buy it you won't regret it.
Pros: Cost, size, trusted name
Cons: not really any so far
Very nice quality, no noise just clean sound.
Pros: Nice and small, good power.
Picked this up to pair with a Kenwood DDX392 and the stock speakers in my 2012 Tundra DC. I was looking for something that could add a little pop to my stock speakers without breaking the bank. This is everything I needed and then some. Just adding this and the HU has made my stereo sound insanely good. I can't imagine what it'll sound like with better speakers. I'm not as savvy as I was 20 years ago with car audio, so I can't go into specs and settings. If you're looking to add a little extra to your system, I would highly recommend this unit.
Pros: Small footprint Easy installation Price
Cons: None yet
Can not beleave the Sound Quality. Loud and clear.??
Pros: Awesome and would recommend it to anybody . Well worth the price. Sound is so much better with amp the just radio & everyone should use amp with there radio it just sounds so much better that way!
easy hook up, sounds great
This is an excellent Amp, fits under my seat. The sound is clean and powerful. Much Much better than my previous amp. Well worth the price. Have had it in my car for a year. Have the amp set at about 40%. The it is clean at any volume. I would highly recommend it!!
This is a very nice amp, does the trick, sounds good, and was easy to install. Caution, if you use larger than 8 gauge wiring, it will not fit in the terminals so you'll need a gauge reducer which Crutchfield does not sell. Make sure you get a good quality wiring kit. Lots of companies lie about the gauge of wire they are selling so watch out. Alpine themselves do not sell a wiring kit unfortunately. When installing, use bare wires no spade connectors etc. other than with the power wire itself, where I thought you get a more solid connection since it is higher gauge. The way I used this was to hook up a set of separates for the front and use the other two channels bridged for a sub. In my case the sub was a single 4 ohm speaker (Bazooka tube) rated right at 150 watts like the amp is. I did not use the high or low pass because the head unit has this functionality. You do not want to set the crossover points on both the amp and the head unit as it could introduce distortion at the crossover frequencies. If you are looking at Crutchfield's site and thinking the price is higher than other resellers, know that there are counterfeit goods out there and also that there may be B stock or refurbished masquerading as new. Best bet is to stay with an authorized Alpine reseller such as Crutchfield.
Pros: sounds great, priced right, Crutchfield provides good tech support if you need it.
Cons: none I can think of
At the suggestion of the crutchfield rep, I paired this amp with some db571 speakers and am pleasntly supprised with the results.
Pros: Much smaller than previous generation amps, good clear sound that doesn't distort when you crank the volume, infact it gets painfully loud arount 13-17 on my pioneer head unit
Cons: Doesnt make toast
I used this amp to power 4 Rockford fosgate midrange speakers. It fits perfectly under my driver seat and isn't noticeable at all.
I have installed many amps over the years, this is by far the easiest to install! If that were not enough, the amp is incredible! Very versatile, nice set of filters. To keep it very short and sweet this amp also sounds as clean and potent as any other amp I have ever used. Fine product. Highly recommended.
Pros: Very small foot print. Way more power than expected! Nice built in x-over and gain controls.
Cons: Yeah right...zero...this amp is that good!!!
I had little space for an amp but wanted big sound for. This amplifier was perfect. Sounds great and doesn't run hot. Which allowed me to tuck it under the trunk board near the spare tire.
Pros: Don't need much space. Sounds great. Lots of power.
Cons: None I can think of.
Great Amplifier!! Installation was a little involved but took me about a day to complete. Works great
This amp is awesome.
Pros: Easy to hide. Easy to install.
This amp fits perfectly under my 2013 ford escape's rear seat for a clean look. It provides sufficient power to my 4 speakers, for a clean & rich sound.
Pros: Easy to Install, inclusion of speaker wire inputs in addition to RCA
Cons: None noted so far
Easy to install. Clear directions.
Plenty of power. Goes louder than you care to listen to. Performs great at all volumes and music styles.
seems like a nice amp so far
Pros: easy hook up like the way it turns on thru the speakers
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
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
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
easy to install, works great. instructions very clear even for a beginner
Pros: small compact and versitile
|RMS Power Output (Watts x Channels)||
50 x 4
|Peak Power Output (Watts x Channels)||N/A|
|Power at 2 Ohms (Watts x Channels)||75 x 4|
|Bridged Power (Watts x Channels)||150 x 2|
|Minimum Impedance Bridged||4|
|Minimum Impedance Unbridged||2|
|Best Frequency Response||20-20K Hz|
|THD at Rated RMS Power||0.08%|
|Signal to Noise Ratio||81 dB|
|Low-Pass Crossover Frequency||50-400 Hz|
|Low-Pass Slope (dB/octave)||12 dB/octave|
|High-Pass Crossover Frequency||50-400 Hz|
|High-Pass Slope (dB/octave)||12 dB/octave|
|Bass Boost||12 dB|
|Bass Boost Frequency||50 Hz|
|Speaker Level Inputs||Harness|
|Parts Warranty||1 Year|
|Labor Warranty||1 Year|
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:
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:
Note: Alpine recommends 8 gauge power and ground wire (minimum).
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 verify what’s in the box, 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.
Alpine's V-Power car amplifiers are smaller than ever, and they employ smart digital technology that makes them incredibly versatile.
I love Alpine Amps.[ Marc Aug 11, 2017 ]
Amp produces crisp and clean audio if rms is matched to speakers. I thought my back speakers were toast until I hooked up this amp. Highly impressed. No noticeable distortion at all. Polk audio dash, retro sound rear[ Anthony Jul 01, 2017 ]
Alpine quality nice looking unit.[ Darwin Jun 25, 2017 ]
This was recommended by Conrad, the Crutchfield adviser who helped me out. After reading the reviews on this site and other sites, this seems to be a top notch product.[ William Jun 01, 2017 ]
Extra watts for the mids and highs from the 6x9's.[ William Apr 19, 2017 ]
No need for btl, perfect for oem head unit.[ William Ortiz Mar 11, 2017 ]
Size, value and rating.[ Tedi Sep 15, 2016 ]
Positive reviews[ Steve Jul 27, 2016 ]
Alpine quality, good size and value.[ Paul Jun 07, 2016 ]
My whole full range system was Alpine designed, and this fits my power handling application without the worry of compatibility with my Kenwood touchscreen like the power pack.[ Valerie May 24, 2016 ]
Great little amp. More than enough power for what I need.[ Jarret Apr 28, 2016 ]
Chuck advised me it's one of the best on the market and I trust the Crutchfield advisors[ Hector Luis Apr 21, 2016 ]
Speaker power[ Mike Mar 18, 2016 ]
best amplifier brand to go with my pioneer nex head unit[ edmund Dec 26, 2015 ]
I used 8 gauge it took up 5/8 - 3/4 of the space in the terminal. I'm not sure how thick the 4 gauge is but it might be to thick to fit into the the hole where it connects. Not sure if it helps but I used 8 gauge around 15 feet works fine even when turned up .[ Raynaldo Jul 22, 2017 ]
4 gauge is what they suggest in the description. I have probably at least 5 of these over the last few years IN JEEPS, trucks golf carts etc. 8 gauge has always been plenty.[ LANE Jul 22, 2017 ]
Hey Anthony! In terms of necessity, 8 awg can provide plenty of power to the amp. No need for 4 awg. If you own 4 awg already then it is possible to make it fit into the connector. You would need to strip away some of the thickness of the wire.[ Matthew Jul 21, 2017 ]
Only 8 awg this is a nice powerful amp I have my amp bridge in two channels[ Mark Jul 21, 2017 ]
Yes I used 4 g[ ROLANDO Jul 21, 2017 ]
You will want to contact an Advisor by phone (1-800-324-9695) or online chat to discuss connecting to your factory system. They will be able to pull up your vehicle and see what will be needed for integration and see if we have what you need.[ Kenny Jun 26, 2017 ] Staff
Thanks for your question. For information on selecting the best amp/sub combo 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 between the models and help you make the best choice for your system.[ Kenny May 12, 2017 ] Staff
I'm pretty sure that you can do what you're hoping to do. The amplifier is quite stable by the way. Sounds amazing.[ FRED Oct 05, 2016 ]
Amplifier's aren't measured for vehicle-specific fit, however the Alpine MRV-F300 measures 8-1/4"W x 2-3/16"H x 7-15/16"D. I would recommend verifying the mounting area in your Harley on your own to confirm fitment. I hope that helps! My Bio: http://www.crutchfield.com/Support/Bio.aspx?bio=159 [ Larry Aug 07, 2016 ] Staff
Yes that's how I got mine! Glad to help![ Lee Jun 16, 2016 ]
LCI ADAPTER[ LANE Jul 22, 2017 ]
Yes, a good working knowledge of DC circuits. Soldering iron, or male/female terminal connectors. 20.or 18 guage. The amount of wire will be determined by where you place this unit. You may want to replace all of your speakers with high end types. This amp will really kick our some nice loud clear sound! I put it in my Porscne 968 with a Kenwood head. I could not believe the results! -Hope this was helpful![ Karl May 27, 2016 ]
Hey there, I've had this in my jeep with a set of polk 6x9 and a set of 6.5 round components for a few years now. I think it sounds crystal clear and goes far louder (without distortion) than any other system I've heard. Unless you're trying to shake your windshield out, this I think would run those great. Superb little amp.[ Jarret May 09, 2016 ]
Also increasing the power will give you more dynamic, richer sound compared to your head unit[ JAMIE May 08, 2016 ]
That would be a very nice amplifier for your Polk Audio speakers. Good build quality as well as sound quality. Should produce nice sound quality for years btc26. Good luck to you!!![ JAMIE May 08, 2016 ]
I don't know. I'm not running Polks. I selected Infinity Kappa components and two ways.[ Greg May 06, 2016 ]
I have the same set up, but one of the polks is the complement version. It sounds great, but needs a sub.[ Brent May 06, 2016 ]
My daughter's system employs this amplifier and she absolutely loves the performance improvement. She had previously used a similarly powered Sony Head Unit and was content until I installed the Alpine Amp. You'll be pleased too.[ FRED May 06, 2016 ]
Have this amp running 4 polk components. It came from Alpine with test results. It does 83 watts rms each channel, its more than enough for me.[ Hunter May 06, 2016 ]
I'm powering 4 Polk dxi651s and those are rated for 6-55 watts rms, you're speakers are rated for 100 rms so I would look for a higher rms output for yours, closer to 100 the better[ Justin May 06, 2016 ]
I did use the RCA input with no issues with a pioneer unit[ KEVIN D Apr 12, 2016 ]
I would suggest that you could use two speakers and agree that the wire would increase the impedance. My daughter loves this amplifier and now wants a sub and additional Alpine amp. I hope you enjoy your purchase.[ FRED Dec 14, 2015 ]
In between the 2 ohm and 4 ohm rating a don't remember what it puts out[ hami310 Dec 14, 2015 ]
Should be 150 watts per speaker[ Justin Dec 14, 2015 ]
Your question has a couple different parts to it. First It is unlikely that your wire is 1 ohm. It would take about 150 feet of 18ga wire to be 1 ohm. So you are probably just slightly over 3 which would put you half way between the 4 ohm power rating (50W) and 2 ohm (75W) so somewhere around 62W. That assumes unbridged. If you're planning on bridging it with 3 ohm speakers that would be equivalent to a 1.5ohm unbridged load and could cause the amp to shut down.[ Guy Dec 13, 2015 ]
Thanks for your question. For information on selecting the best sub for your amp 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 between the models and help you make the best choice for your system.[ Krissy Nov 29, 2015 ] Staff
Thanks for your question. For information on selecting the best amp for your speakers 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 between the amp models and help you make the best choice for your system.[ Krissy Nov 17, 2015 ] Staff
I forwarded your question to an Advisor and they responded with the following: For the Alpine MRV-F300 50W x 4 Car Amplifier you will need a 40 amp fuse or larger.If you would like to discuss further you can contact an Advisor directly by phone (1-800-324-9695) or online chat.[ Krissy Jan 22, 2015 ] Staff
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 ]
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 Apr 11, 2014 ] Staff