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Alpine SPR-50C

Type-R 5-1/4" component speaker system

24 Reviews | 4 questions - 8 answers

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Our take on the Alpine SPR-50C

Exceptional performance, even at high volume

Alpine Authorized Online Dealer

Like it loud? Alpine designed their Type-R speakers for people who like to turn it up. They'll deliver big, dynamic sound with plenty of bass, and they'll handle lots of volume. They'll work great with your car stereo, but they really come into their own when you power them with an outboard amp.

Alpine SPR-50C

Fine-tuned for clarity and balance

The Type-R SPR-50C component system features 5-1/4" woofers with multi-layer hybrid fiber cones that deliver really strong bass response. Alpine's adapted the specially ridged surround, originally developed for their subs, to these speakers, so you get consistent, extended cone movement that pushes a lot of air. The silk tweeters produce smooth highs that bring out your music's detail and depth with no shrillness. Alpine mounts an EQ ring in front of the tweeters to help disperse the highs for a larger listening "sweet spot" in your ride. The tweeters mount separately so you can focus the sound better for your seating position.

Smaller, stronger neodymium magnets

Alpine uses powerful neodymium magnets which are much smaller than traditional magnets, so the SPR-50C's high-density polymer frames will fit into more places than most 5-1/4" woofers. External 2-way crossover networks control the high and low frequencies for seamless, clear sound — and they're 60% smaller than the old Type-R crossovers so they're easier to install. Type-R speakers have earned their reputation in the past as the masters of "crank it to the max," but Alpine has really kicked the performance factor of the latest models up a notch or two.

Installation note: You'll need a pair of our universal backstraps to install the tweeters in the factory locations.

Priced per pair

Product Highlights:

  • system includes two 5-1/4" woofers, 2 tweeters, and 2 crossovers
  • multi-layer hybrid fiber woofer cone
  • High Amplitude Multi Roll (HAMR) Santoprene® rubber surround
  • 1" silk dome tweeter
  • external 2-way crossovers with 4-level tweeter adjustment
  • power range: 8-100 watts RMS (300 watts peak power)
  • frequency response: 70-29,000 Hz
  • sensitivity: 87 dB
  • top-mount depth: 2-1/4"
  • grilles included
  • warranty: 1 year
  • Our 60-day money-back guarantee

What's in the Box:

  • 2 Woofers
  • 2 Woofer grilles
  • 2 Grille badges
  • 2 Tweeters (each has an attached 29" length of wire)
  • 2 Tweeter grilles (installed)
  • 2 Swivel flush mount housings (with tweeters installed)
  • Two crossovers (each has attached 32" input and 12" output wires)
  • 2 Flush mount retention rings
  • 2 Stealth brackets
  • 2 Foam self-adhesive pads
  • 2 Foam self-adhesive rings
  • Eight 1-1/8" Self-tapping screws
  • 8 Speed-clips
  • Four 5" Zip ties
  • 2 Pieces of two-sided tape
  • Warranty information
  • Important Notice sheet
  • Template and specs on box

Alpine SPR-50C Reviews

Average Customer Review(s):

(24 Reviews)

Best components out now

James from Hanover, PA on 8/12/2018

2011 Ford F-350
Crutchfield Customer Review (What's this?)

Best components for the $.

Pros: Awesome speakers

Cons: None

Alpine SPR-50C

Kenneth A from Warren, IN on 5/21/2018

2006 Porsche Boxster
Crutchfield Customer Review (What's this?)

Great Quality and sound at a great price!



Great sound

Crutchfield customer from Holland, MI on 12/8/2017

2002 Honda Civic LX
Crutchfield Customer Review (What's this?)

I love the sound quality and install wren the very smoothly


Cons: Large compacitor rn th the tweeters

Alpine SPR-50C

Crutchfield customer from Newburgh,NY on 6/14/2017

2017 Ram 1500
Crutchfield Customer Review (What's this?)

My third time using these speakers. The only component sets I'd ever use or recommend.



Great sound with Amp!

Lance from Phoenix, AZ on 6/6/2017

2012 Jeep Grand Cherokee
Crutchfield Customer Review (What's this?)

In short, these speakers are great! The sound reproduced from these are definitely a huge upgrade from my WK2 stock speakers. It's a little pricy but quality always is. I definitely love these speakers and I also purchased the corresponding type r 6.5 coaxials for the rear. I had these installed for four weeks before I was able to buy an applicable amplifier. I got 100w going to each speaker and the difference is Night and day. With only my kenwood HU powering these there was still much to be desired. It's not the speakers fault though an external amplifier is definitely a must with these. The highs are crisp and clear. I hear details in songs that I didn't hear my previous Polk audio setup with an external amplifier. The mid base is definitely punchy but in part to the external alpine amplifier.

Pros: Large tweeters, quality, clear, punchy, and capable of handling high power.

Cons: Not really a con but you will need a external amplifier.

hear the very tiniest details of the music

Jordan from Phoenix, AZ on 4/26/2017

2002 Lexus IS300

THESE TWEETS ARE INSANE!!!!! Bought these open box and I have extensively overpowered them with my IA6.4 but they're still kickin butt!!! The IA bass knob has a clipping indicator so I tuned everything to max clean power and never use EQ. Eventually decided to bump the sub channel up to keep up with the speakers at lower volume and this reduced the overall "safe max" clipping volume to a level that my ears can handle better. Had to stop taking so many bass rides because my ears were ringing. Might turn the tweets down on the crossover if I ever get my doors open again because this would probably help balance with the woofers a bit better.

Pros: the most crisp, clear, buttery smooth silk tweeters fill my whole car like a fine mist of perfect sound

Cons: wish the midbass was rated for as much power as the tweeter

Alpine spr-50g

john E. from litchfield ct on 7/24/2016

2015 Ford F-350
Crutchfield Customer Review (What's this?)

excellent sound with infinity k4 amp just like being at jazz concert ,only I get to control the volume!!!

Pros: I get to put tweeter where I want to better balance sound .

Cons: none.

Incredible sound quality

Saga from san francisco, CA on 3/1/2016

2015 Honda Civic EX
Crutchfield Customer Review (What's this?)

Very happy with purchase from Crutchfield. Great product!!

Pros: Crispy sound

Cons: None

Great Speakers!

Nick C from Chantilly, VA on 1/29/2016

2000 Buick LeSabre
Crutchfield Customer Review (What's this?)

Fantastic sound! No distortion at high levels and the tweeters are great!




JoeP from Connecticut on 11/29/2015

2009 Honda CRV EX
Crutchfield Customer Review (What's this?)

I paired these with an Alpine head unit along with Alpine R's in the back door along with an Alpine amp and the sound is simply amazing. The clarity and power that these speakers posses are some of the best in car audio today. I highly recommend these speakers! Try them and you will be pleased, Crutchfield as always are the best around.

Pros: Clarity and power with no rattles at higher volumes.

Cons: None that I can see or hear.

Alpine SPR-50C

Jason from Florida on 6/14/2015

Crutchfield Customer Review (What's this?)

great sound quality



Alpine SPR-50C

Crutchfield customer from South Dakota on 4/8/2015

1996 Ford Ranger
Crutchfield Customer Review (What's this?)

sounds very good in 96 ranger. easy install




Crutchfield customer from Loganville Ga 30052 on 12/26/2014

2004 Ford F-150
Crutchfield Customer Review (What's this?)

Sounds great. Awesome upgrade from factory speakers

Pros: Easy install


Great Speakers

TimG. from Palm Coast, FL on 3/24/2014

Crutchfield Customer Review (What's this?)

These are a great pairs of Speakers. I installed them in a 2003 Buick Park Avenue. I rewired all the speakers with new wire and hooked it to Rockford Fosgate Punch P4004 50W x 4 Car Amplifier. I put the Crossovers in the trunk and ran 2 sets of wires to each door. I hooked them up to a Kenwood DNX690HD before the amp it they played perfect.

Pros: They mount perfectly in my car and sound great

Cons: I have no problems with these speakers.

Great set of speakers

Jeremy from Midland, TX on 3/2/2014

1999 Pontiac Firebird
Crutchfield Customer Review (What's this?)

I have been very satisfied with the speakers. They are paid with an alpine amp 110 rms. the sound great and never seem like they are working hard. Very satisfied as I got the second pair half off from Crutchfield special

Pros: Fit in car perfectly. Sounds very clean

Cons: Tweeter is very high... Even with crossover set at the 2nd highest setting. Probably need to adjust it all the way down. Crutchfield service was great!

Decent component speaker sound

SteveB from Fitchburg, MA on 2/14/2014

Crutchfield Customer Review (What's this?)

Maybe it's the Alpine PDX-V9 amp I got to power my system, but something just isn't delivering the punch I had hoped for. While the sound is quality, I was really hoping for a more powerful system.

Pros: Sound quality is quite good

Cons: Not loud enough to satisfy my taste.

Nice from Ashburn, Va on 8/21/2013

Crutchfield Customer Review (What's this?)

Good sound from little speakers. Solid Build.

Pros: Good rich sound. Surprised out quality from such little speakers

Cons: Tweeters did not fit as indicated into car. Had to make some modifications.

Alpine SPR-50C

ChrisO from Orlando, FL on 4/6/2013

These speakers pack quite a punch for being only 5.25". These speakers have crisp sound and a lot of bass. I have it installed in a 2005 Accord EX and it makes my rear-view mirror shake (no sub installed). These speakers are well worth the money as I am only putting ~50 watts rms to each along with the spr69. These speakers are true quality loud speakers as I've owned eminence, selenium, american bass, etc. If you want volume along with clarity without breaking the bank, these speakers are the way to go. If I had the space, I would have purchased the 6.5's as I'm sure they are just as great or even better.

Pros: Very light, crisp, loads of bass.

Cons: makes my doors shake violently even when turned down, dynamat may be the solution.

Alpine SPR-50C

Crutchfield customer from columbia sc on 4/1/2013

2009 Ford Fusion
Crutchfield Customer Review (What's this?)

great looking speakers, highs are nice and clear, missing some of the puch I would have liked



Great product

DavidV from Rome, Ga. on 12/31/2012

2009 Dodge Challenger
Crutchfield Customer Review (What's this?)

Alpine continues to make excellent products. The sound, clarity, and thump make my '09 Challenger rock out. Love them !!



Alpine SPR-50C

peter from fountain valley, ca on 6/3/2012

great speakers. i put them in my dodge ram quad cab. they sound clear and very easy to install. i put them in the rear doors and drilled holes for the tweeters. i have jbl 6x9 in the front doors with an alpine pdx-v9 5 Chanel amp 100 watts rms x4. 500watts rms mono to power the sub. great sound quality and fair price. couldnt recommend these speakers more.

Pros: easy install. great quality and they last had them over a year. recommend a good amp with 100 watt rms. tweeters are adjustable and crossovers work well

Cons: the only cons is that you should use sound damping for vibration.


joshg from indiana. in on 10/6/2011

2006 Chevrolet Monte Carlo
Crutchfield Customer Review (What's this?)

i replaced the previous gen model with these and i honestly couldnt be more blown away. i do not know how they(alpine) did it but the highs are so much crisper and the mids from the woofer are that much punchier. i highly recommend these components! but be sure to power them properly or you WILL NOT get the full potential these have to offer. i use the pdx-f4, but i think you can get away with using another high quality 4 channel amp. (minimum rms of 75x4).



Great sound! Perfect fit!

ET from Hayward, CA on 9/26/2011

1991 Porsche 911 Carrera 4
Crutchfield Customer Review (What's this?)

Perfect fit to my 1991 Porsche! Great sound!!!!!!!!!! Listening to music made a huge sound difference!!!!



Beyond What I Expected

BrandonD from Birmingham, AL on 9/23/2011

Be careful before you puchase one or two of these bad will hear every detail of the sounds and clarity coming from them. It is so clear and very powerful especially if you add an amp(I reccomend the PDX -F6). With that bein' can wake up the whole neighborhood. Becareful not to blow up your ear drums in the process. This is the best Alpine has to offer!!




Hands-on research

Features and Specs

Speaker Size 5 1/4
Design 2-way
Tweeter Design 1" Dome
Impedance (Ohms) 4
Tweeter Composition Silk
Woofer Composition Multi-Layer Hybrid Fiber
Woofer Surround Santoprene Rubber
Parts Warranty 1 Year
Labor Warranty 1 Year
Sensitivity (1W at 1 meter) 87
Sensitivity at 2.83 volts N/A
Frequency Response 70 - 29k Hz
Minimum RMS Wattage 8
Maximum RMS Wattage 100
Peak Power Handling (Watts) 300
Top-mount Depth (Inches) 2 1/4
Bottom-mount Depth (Inches) N/A
Cutout Diameter or Length (inches) 4 5/8

Product Research


Woofers: The Alpine Type-R series component speakers feature multi-layered hybrid fiber woofer cones; for durability and superior linearity, they use rubber surrounds.

HAMR Surround: Type-R speakers use Alpine's multi roll HAMR surround (patent pending), a technology developed for Alpine subwoofers that maintains control and stability at higher volume levels. HAMR surround combines increased cone area and long linear cone excursion for deep, powerful bass response.

Motor Structure: The woofer's High-performance Linear Drive Motor structure features a square-wire voice coil with a large 30mm diameter, driven by a small but powerful neodymium magnet. This design provides linear motion over a wide cone excursion.

Neodymium Magnet: The neodymium magnet on the Type-R series woofers allows smaller speaker dimensions, making them easier to install in a wide variety of vehicles. They are also lighter than designs using standard magnet technology.

HD Polymer Frame: The new Type-R woofers use a revolutionary HD Polymer frame, making the speaker stronger, lighter, and easier to install.

Tweeters: The SPR-50C includes 1" (25mm) silk dome tweeters. Alpine's EQ Ring improves the tweeter's dispersion characteristics, providing excellent off-axis response. When using the flush-mount housing you can also tilt the tweeters up to 15° to focus the sound toward your ears.

Tweeter Mounting Options: The tweeters come installed in a swiveling flush-mount housing. You can also install the tweeters behind factory grilles using the included stealth mount brackets. The stealth mount brackets can be top or bottom mounted. The installed tweeter dimensions are:

  Flush Mount (swivel) Factory Location (bottom mount) Factory Location (top mount)
Mounting Depth 0.67" 0.965" 0"
Mounting Height 0.43" 0" 0.8"
Cutout Diameter 2.007" N/A N/A
Frame Diameter 2.275" 1.7" x 2.8" 1.7" x 2.8"

Crossovers: The SPR-50C features low-pass crossovers attached to each woofer's input terminal and separate high-pass crossovers in-line between the woofers and tweeters. Because the crossovers are separate, the system can be bi-amped. Two-sided tape is included to mount the high-pass crossovers and their dimensions are:

  • Width: 2.65"
  • Height: 0.97"
  • Depth: 1.27"

Tweeter Attenuation: Each crossover has four tweeter level options, allowing you to precisely tune the high frequencies to the car interior and tweeter placement. Using the supplied jumpers select 0dB (no attenuation), -2dB, -4dB, or -6dB.

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 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.

Q & A

Customer Q&A

Crutchfield asked  
Why did you buy this?

Needed new speakers and I love bass?? so I got these [ Gino  Feb 07, 2019 ]
I like the brand [ leonel  Sep 04, 2018 ]
The reviews were all very positive [ Doug  Jun 02, 2016 ]
Because the matching Alpine coaxils in my rear doors rock [ Ryan  Mar 08, 2016 ]
I wanted to replace the accord factory components with good quality speakers and minimal rewiring. The tweeters in this set mimic the factory setup of an integrated crossover, so easily installed with slight mods to the factory grills. The woofers drop into the doors using the mounting rings? The sound is great! [ walter  Feb 08, 2016 ]

4 questions already asked

Thanks for your question. For information on selecting the best 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 amp models and help you make the best choice for your system. [ Krissy  Feb 14, 2018 ]  Staff
It depends on how you are feeding the wires and the length you have between the tweeters and woofers. On my E36 BMW, I measured the lengths and found that I was nominal for the dash so I had to put them in the doors. The crossovers are small enough to fit easily in either location. [ Derek  Oct 20, 2016 ]
I had enough space in my door to Velcro the cross over. But mounting it under the dashboard will work to just need to make the wires longer [ GARLAND L  Oct 20, 2016 ]
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  Oct 03, 2015 ]  Staff
Vehicle application shouldn't matter for wire size. I generally use 12 gauge wire unless I am running directly from an amp and then I would step up to 10 guage [ Doug  Apr 05, 2015 ]
Sorry, i did not do the installation. The tech department at Cruchfield should be able to answer. [ JAMES  Apr 05, 2015 ]
18, same as any other type of vehicle [ ZIJIAN  Apr 05, 2015 ]
I used 16 gauge speaker wire shouldn't be any different for an 18 wheeler they are going to get the same power to them as in a car [ NICK  Apr 05, 2015 ]