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Alpine SPR-50C

5-1/4" 2-Way Type-R Series Component Car Speaker System

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List price $329.95

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with warranty A Pair

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Alpine SPR-50C

5-1/4" 2-Way Type-R Series Component Car Speaker System


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NVX 25 ft. of True Spec 12 Gauge Speaker Wire

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Car Stereo and Speaker Installation Tool Kit

Includes Test Light, Crimp/Splice Tool, Multi-bit Screwdriver and more.


NVX SDDK12 Door Kit

Eliminates speaker panel distortion and reduces door vibration, rattles and squeaks!



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Alpine Car Audio Store
  • 5-1/4" Type-R 2-Way Component System
  • Power Handling:
    • Peak: 600 watts per set / 300 watts each side
    • RMS: 200 watts per set / 100 watts each side
  • Impedance: 4 ohms
  • Multi-Layer hybrid fiber cone delivers a really strong bass response
  • High Amplitude Multi Roll (HAMR) Santoprene rubber surround provides consistent, extended cone movement
  • 1" Silk ring-dome tweeter produces smooth highs
  • External crossovers — 12 dB per octave (high-pass) and 6 dB per octave (low-pass)
  • 7-Level tweeter adjustment
  • Powerful neodymium magnets
  • High-Density polymer frames
  • Frequency Response: 70 - 29,000 Hz
  • Sensitivity: 87 dB
  • Top-mount depth: 2-1/4"
  • Cutout Diameter: 4-11/16"
  • 1-year warranty

Alpine products are warranted solely by Sonic Electronix, Inc. under the same period and terms as the original Alpine warranty. Sonic Electronix is not an Authorized Alpine Dealer and Alpine requires all merchandise purchased by Sonic Electronix customers to be returned solely to Sonic Electronix. Alpine products are also covered by our Standard Return Policy for returns on exchanges or refunds within 30 days from the date of purchase.

Priced Per Complete Component System: 2 midwoofers, 2 tweeters and 2 crossover networks.

Product History:

Alpine SPR-50C thumbnail
(newest, current model)
Alpine SPR-13S thumbnail
(previous model, replaced by Alpine SPR-50C)

Speaker Specifications

This is the manufacturer product line of speakers.
Type-R (Alpine)
Priced Per
Car Speakers are typically sold in pairs so you will receive 2 speakers for each speaker purchase on speakers marked "Priced Per Pair". If a speaker is marked "Priced Per Each" then the speaker is sold individually and each purchase you make will result in 1 speaker. High-powered tweeters, midrange and full-range pro audio for car speakers are typically sold per each speaker.
Speaker Size
Refers to the size of the speaker measured in inches. Every vehicle has standard application sizes. Please use our vehicle fitment guide for your vehicle's specific speaker sizes if you do not know them.
The number of individual drivers in a car speaker. Speakers with 2 drivers are known as a 2-way, and 3 drivers are known as a 3-way. Component systems are often referred to as "separates" because the tweeter is not attached to the midwoofer (main speaker driver) and mounts separately in a location such as a door post. Component systems typically come with an external crossover so you can easily adjust the high and low frequencies sent to both the midwoofer and the tweeter. Center channel speakers are great for those looking to have surround sound in their vehicle.
2-way Component System
Tweeter Design
Designs such as cone, dome, semi-dome, balanced dome, and whizzer are most popular. Cone tweeters are simple, efficient and typically are the most reasonably priced. Dome tweeters are used in most home speakers, and provide a smoother and more accurate sound. Semi-dome design is one with a dome placed inside a cone. A Balanced dome driver is a semi-dome with equal reproduction area given the cone and dome portions of the driver. A whizzer tweeter is a separate tweeter cone driven by the voice coil of the woofer.
Tweeter Composition
Materials such as polypropylene, silk, cloth, and paper are the most common, where as many more recent tweeters are now manufactured with composites such as Aluminum, Titanium, Mylar, and other materials.

PEI is an acronym for "Polyetherimide" which is an amorphous, amber transparent, high-performance thermoplastic.

Woofer Composition
Lightweight woofer cone materials are essential for efficient operation. Poly cones produce exceptional sound and are sturdy against various changes in temperature. Paper cones are very efficient, and when treated for moisture resistance, will perform at a high level. Poly refers to polypropylene, which is thermoplastic or fibers that are polymers of propylene. IMPP refers to injection molded polypropylene, a commonly used process and material in speakers.
Hybrid Fiber Pulp
Woofer Surround
A speakers surround is part of the suspension system. The surround protects the cone and prevents it from being displaced as it flexes out from the basket. It is usually made of a durable material like treated foam or rubber in order to withstand the strenuous job of producing bass frequencies.
Santoprene Rubber
Peak Power Handling
Peak power handling refers to the amount of power a speaker can handle during a brief musical burst. The RMS power range figure is a much more reliable rating for determining the speaker's power requirements. The Peak power handling specification is typically rated per speaker unless otherwise noted.
300 watts
RMS Power Handling
The RMS power is the amount of power the speaker requires to operate safely and properly. RMS Power Handling refers to the amount of power a speaker can handle on a continuous basis. We recommend powering your speakers or subwoofer with 80%-120% of its recommended RMS rating. The RMS power handling specification is typically rated per speaker unless otherwise noted.
100 watts
An efficiency or sensitivity rating tells you how effectively a speaker converts power into sound. The higher the number, the more efficient the speaker and the louder it will play with the same input power. An efficient speaker helps you maximize your available power. Most sensitivity ratings measure the speaker's output with 1 watt of input, 1 meter from the speaker. Some speakers' sensitivity is measured with 2.83 volts of input, instead of 1 watt.
Efficiency (1w/1m) is not an accurate indicator of a subwoofer's output capability and should not be used as a comparison to other speakers or subwoofers to determine which one is "louder".
87 dB
Frequency Response
The range of frequencies the speaker will reproduce (lowest frequency to the highest). Bigger is better, meaning the wider the range, the better. The optimal range is 20 - 20,000 Hz (which is the range of human hearing).
70 - 29,000 Hz
Impedance (Per Voice Coil)
The load value (in ohms) that the speakers present to the amplifier per voice coil - the amount of resistance to the current flow. This is a key specification as subs wired in parallel or low impedances can create problems with your amplifier and potentially void all warranties. We encourage you to ask our support department prior to purchase if you do not understand which impedance level will suit your application best.
4 ohms
Shallow Mount Installation
This means that the subwoofer/speaker is designed to be installed in areas that do not have a lot of space. Shallow mount subwoofers are typically found under a seat or behind the seat in some trucks.

Shallow mount speakers will typically have a mounting depth of 2" or less, while shallow mount subwoofers will typically have a mounting depth of 3" or less.

Top-Mount Depth
The depth when installed on top of the mounting surface. Measured from the bottom of the speaker's magnet to the bottom of the mounting holes on the rim of the speaker.
Cutout Dimensions
Refers to the dimensions of the hole, measured in inches or millimeters, required to contain the speaker.
Speaker Grilles
A grating or screen of metal or plastic bars or wires, mounted in front of a speaker as protection. If yes, the speakers will include matching speaker grilles. If no, there are no grilles included.
Number of Speakers
This is the number of speaker that is included in the package. Each purchase will result in receiving the number of speakers indicated here. Please note that some items will have multiple woofers in the same enclosure. For sets of component speakers, this number will refer to the number of sets of speakers (For example, 2 would indicate the purchase includes 2 woofers and 2 tweeters).

Please refer to the product image and description for further details about the speaker.

Warranty and Return Policy

Parts Warranty Duration
1 year
Labor Warranty Duration
1 year
Warranty Provider
Sonic Electronix

Summary of Customer Ratings & Reviews

Rating Distribution

5 Star
4 Star
3 Star
2 Star
1 Star

Average Attribution Rating



alpine greatness

April 3, 2012

I just hooked these speaker up today and they are crisp and clear sound is much better than my Focals I had. They were coaxils but these components make a world of difference. My front stage sounds so much better bass is crossed over on my kenwood excellon 895 at 60 hertz and their is no distortion. The tweeters are crossed at -2 they are teamed up with the Alpine Type-R 6/9 and I could not be happier

31 of 53 found this helpful

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Sacramento, Calif.

Great Sounds

October 15, 2012

Purchased the entire package, head unit ,amp, and speakers. These speakers are killers. Crisp clear highs, and great bass. Couldn't be happier with my investment. I feel I absolutely got the maximum bang for my buck.

30 of 54 found this helpful

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Manorville, NY


September 29, 2014

You won't be disappointed with these. I had replaced my Boston Acoustics with these, my cheaper I thought I wouldn't get the same performance. They are better, glad I bought them.

The only grip I have is the size of the tweeter housing and the lack of assembly if you wanted to dashmount from the bottom, they are huge but the perk of being able to direct them once they're installed is a nice feature

I put them in a Ford F350 Crew Cab, fronts and rears. Also helps that the crossovers are same in size then a credit card! Easy placement!

36 of 67 found this helpful

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Orange, CA


June 15, 2012

These speakers are absolutely amazing! But you definitely need a good amp to get your money's worth out of them. Unamplified they are just okay, but run them off a good amp with 100W RMS like they're intended to be used and you won't need a subwoofer, no joke. Paired these with the Type R 6x9's for the rear and a 600W 4ch amp and the whole car shakes! They punch really hard and sound amazingly clean. I would have happily payed full price for these, at Sonic's price this is a steal!

31 of 58 found this helpful

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Modesto ca


January 2, 2014

Alpine what can I say simply the best hands down

36 of 71 found this helpful

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Richmond, VA


August 26, 2011

Awesome component speakers in addition to the type-r 6x9's all powered through the kicker 650.4. Check em' out. Best bang for your buck.

30 of 59 found this helpful

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Knoxville, TN

You won't be disappointed!

June 9, 2014

I have a 1999 Oldsmobile Intrigue with the stock stereo and speakers.
I purchased and installed the following Alpine components:

CDE-W235BT Head Unit
SPR-50C Front Component Speakers
SPR-69 Type-R Rear Speakers
KTP-445A Power Pack
Metra 70-2001 Wire Harness
Metra 95-2001 Double DIN Installation Dash Kit

Installation was easy and the sound is incredible.
The shipping is very fast and customer support is awesome.

Thanks Sonic!

38 of 76 found this helpful

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Grantsville, Ut

Awesome Sound

September 17, 2013

You will not be disappointed with these speakers. The sound quality is far and beyond what my oem speakers did for me. The only problem I had is I can't roll my windows down anymore because the speaker is so deep. However, this was a bit of poor planning on my part. Just be sure that they'll fit in your car.

31 of 62 found this helpful

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December 12, 2011

I have had these speakers for about 4 months now and i must say they are amazing, super loud and chrisp clear sound.

27 of 54 found this helpful

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Mesquite, TX


March 20, 2015

I highly recommend this brand not only because its alpine, but because it's actually a great product. I only have these running off of the stock amp and they still sound great! I do recommend getting a small amp if you want to get the true power out of them.

23 of 50 found this helpful

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Accessory Tools and Products

Accessories added

NVX 25 ft. of True Spec 12 Gauge Speaker Wire

100% OFC wire with EnvyFlex metallic jacket insulates and protects against damage from extreme conditions.

Your Price $39.99

Streetwires 25 ft. of True Spec 12 Gauge Speaker Wire

You need speaker wire to connect your speakers!

Your Price $44.95

Belva 23 ft. of True Spec 12 Gauge Speaker Wire

100% Copper Clad Aluminum, high strand count with ultra-flexible PVC blended jacket for easy installation

Your Price $14.99

Car Stereo and Speaker Installation Tool Kit

Includes Test Light, Crimp/Splice Tool, Multi-bit Screwdriver and more.

Your Price $16.99

NVX XTGSP2 Tone Generator and Speaker Polarity Tester

Perfect for safely troubleshooting and testing audio systems

Your Price $29.99

Belva Five Piece Installer's Panel Removal Tool Kit

Easily removes dash/trims, door clips, panels and pins, rubber grommets and vehicle emblems.

Your Price $11.99

3 in 1 Wire Quick Splice T-Tap and Butt Connector Crimper + Wire Cutter

Used for cutting copper and aluminum wires up to 8 gauge.

Your Price $29.99

Universal Wire Puller & Grabber

Running wires has never been easier! This wire puller allows you to run wires through those hard to reach places!

Your Price $6.99

NVX SDDK12 Door Kit

Eliminates speaker panel distortion and reduces door vibration, rattles and squeaks!

Your Price $39.99

Stinger Roadkill Door Kit

Use this to eliminate rattle from your doors!

Your Price $54.99

NVX Sound Dampening Rubber Roller

Install your Sound Dampening with ease using this heavy duty rubber roller!

Your Price $6.99

12-10 AWG Butt Connectors

These yellow butt connectors are ideal when connecting thicker speaker wire your new aftermarket speakers.

Your Price $5.99

12-10 AWG Yellow T-Tap Adapters

Allows for fast and easy splicing of wires by easily tapping into the cable.

Your Price $4.99

12-10 AWG Quick Disconnect Connectors

These yellow quick disconnect connectors make it easy to connect and disconnect speaker wire your to your new aftermarket speakers!

Your Price $6.99

Speaker Baffles for your Speakers

Enhance the sound of your speakers with these easy to install speaker baffles.

Your Price $9.99

5" to 5-1/4" Round Foam Speaker Baffles

Creates a tight, acoustic seal behind the speaker to enhance the sound quality.

Your Price $8.99

Items we think you might want
VSP525KIT main

• Peak Power: 260W
• RMS Power: 130W
• 2-way
• 4 ohms Impedance
• Polypropylene Component Woofer Cone
• Nitrile Butadiene Rubber Speaker Surround
• 25mm Silk Dome Tweeter

Your Price $64.99

Browse 2 questions and 12 answers
Hide answersShow all answers | Sort by
Why did you choose this?
Sonic Electronix Store
I wanted a component set-up and Alpine is top of the line.
Joseph R on Nov 27, 2015
nice sub package for the price
Mike R on Feb 12, 2015
I like the way alpine does their interior speakers
dozier s on Sep 16, 2015
great quality at a great price
Jonathan G on Dec 29, 2014
Can I buy a replacement tweeter?
ALAN B on Dec 12, 2014
Best Answer: Hello Alan,

Short of contacting the manufacture for "Replacement Parts", your best option will be the Alpine SPR-10TW.
Alpine SPR-10TW
Alpine SPR-10TW
Reply · Report · Sonic Electronix SStaff on Dec 14, 2014
· Add Answer · I Have This Question Too (0)

Product Summary


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Internal SKU


Internal Product ID


Sonic Electronix Wiring Guide

Wiring Diagram Legend

Warning: The image depicted shows the resistance change when wiring multiple subwoofer terminals. Please refer to your subwoofer's owner's manual for the proper wiring of its terminals. Sonic Electronix, Inc. is not responsible for damage caused to your audio system or vehicle due to improper installation. Please call tech support at 1-877-289-7664 if you require additional assistance.

Product Name: Alpine SPR-50C