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Alpine SPS-400

4" 2-way Type-S Series Coaxial Car Speakers

Discontinued
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This item has been discontinued

But you may be interested in the newest model that's available.

sps410 thumbnail

Alpine SPS-410

OUR PRICE: $49.95

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  • 4" Type S Series Car Speakers
  • Power Handling:
    • Peak: 280 watts per set / 140 watts each side
    • RMS: 90 watts per set / 45 watts each side
  • Poly-mica cone woofer
  • Rubber surround
  • 3/4" Silk dome tweeter
  • Optimized air-flow design
  • Stamped steel basket frame
  • Affordable premium quality upgrade to your factory audio system
  • Great power-efficient speakers
  • Swivel-mount tweeter
  • 4 ohms impedance
  • Square-wire short voice coil
  • Low distortion strontium magnet
  • Top-mount depth: 2"
  • 1-year SonicElectronix.com 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 Pair

Product History:

Alpine SPS-410 thumbnail
(newest, current model)
Alpine SPS-400 thumbnail
(previous model, replaced by Alpine SPS-410)
Alpine SPS-10C2 thumbnail
(previous model, replaced by Alpine SPS-400)

Speaker Specifications

Series
This is the manufacturer product line of speakers.
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.
4"
Design
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
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.
Dome
Tweeter Size
Refers to the size of the tweeter. Typically, smaller tweeters produces less output with higher frequency response.
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.

Silk
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.
Polymer/Mica Composite
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.
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.
140 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.
45 watts
Sensitivity
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).
80 - 22000 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.

Yes
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.
2"
Cutout Dimensions
Refers to the dimensions of the hole, measured in inches, required to contain the speaker.
Cutout Dimensions
Refers to the dimensions of the hole, measured in inches or millimeters, required to contain the speaker.
5-1/16" x 5-1/16" 
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.
No

Specials with this Item

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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
38%
4 Star
62%
3 Star
0%
2 Star
0%
1 Star
0%

Average Attribution Rating

Durability
4.6
Value
4.8
Features
4.4
Design
4.6
Usability
4.8
Evlengr

Columbia, MD

Overall
Durability
Value
Features
Design
Usability
Great for the price

May 10, 2011

I recommend the SPS-400 as they deliver a good clean sound for such a small speaker. They are not agreesive on the highs and handle my Alpine 4 channel amp well 75x4. I replaced a set of Infinity Kappa's that were just to shrill. Can't really think of any cons except the spade connectors on the speaker are a little fragile. I broke one connecting it to female side of wire, but was able to solder another in its place easily.

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ixkid

Simi Valley, CA

Overall
Durability
Value
Features
Design
Usability
Not the most efficient but great sound with an amp

July 28, 2010

I have 4 of these and a 10" sub in a 93 range rover and they sound better than the 5K sound system that came with it. The speakers are not the most efficient so I'm running it with a MB Quart amp 50wx4 and they sound perfect!! Inside a range rover, which is a huge space! For the money, it's hard to beat it. Also, you need a sub with these, these are not meant to fill in deep bass. Sonic was great, fast shipping, great staff, overall a great experience.

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David

Memphis, TN

Overall
Durability
Value
Features
Design
Usability
Great speakers for the price

March 18, 2010

I've had these for about 6 months now and they perform well, especially for the price. They produce nice clear sound and decent bass. I am currently running an external subwoofer so don't have deep bass running through them, but they've handled everything else without distortion. I'd recommend them for anyone looking for a nice set of replacement speakers. I plan on hooking them up to an amplifier soon and think they will sound even better then. The only thing I wish is the tweeter was more powerful, but I think I am just used to my previous component tweeters which were a little more powerful.

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DJ

Plainwell, MI

Overall
Durability
Value
Features
Design
Usability
Great Speaker

January 12, 2010

it has nice clean highs and it hits, i have it hooked up to a 50watt 4-channel amp and the bass that comes out of it makes you think its a 6x9. great price and great overall speaker a great buy

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phyn

Reno, NV

Overall
Durability
Value
Features
Design
Usability
Nice speakers, great price

August 19, 2009

Ok they are 4" speakers so they aren't going to pump out a lot of bass, but they are great on the mid and high range. The price seals the deal. If you are looking for small speakers, these are the way to go.

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Billy

NJ

Overall
Durability
Value
Features
Design
Usability
good price good speaker

May 22, 2009

the highs and mids are amazing. Lows are pretty week but its a 4" speaker so wat can u expect. Overall awesome price for a really good speaker.

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polo

san jose

Overall
Durability
Value
Features
Design
Usability
great value

March 13, 2009

great value for the price.

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Darrell

Mount Juliet, TN

Overall
Durability
Value
Features
Design
Usability
Alpine SPS-400

March 11, 2009

Bought these as rear, or "fill" speakers in my '35 Ford Pickup that is a Street Rod. Needed the small size, but also they needed to be able to handle the power from the Alpine amp. I had to run the amp because the exhaust and engine on the street rod is pretty loud. We mounted these behind the headliner, and the slim fit worked great! For the application I'm using them on, they work excellent. Not a lot of bass, but they're mounted only about 12 inches from your head, and I'm not running a lot of power to them. If you need a small speaker that will handle a medium amount of power, I would recommend these. Sound is smooth and full.

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Dave

French Polynesia

Overall
Durability
Value
Features
Design
Usability
Very clean sound!!!!

February 13, 2009

I have 4 of them in my car and I can say that they're very good!!!

You can hear sounds that you never heard in your favorite songs!!!

Super quality, nice soft design and for the price SONIC is the best!!!!

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Jake

Dallas, Tx

Overall
Durability
Value
Features
Design
Usability
Awsome!

February 9, 2009

Super Good Speakers!! CLEAR Highs and Overall Excellent SOUND! Fast Shipping Too!

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Clifford

Austin, TX

Overall
Durability
Value
Features
Design
Usability
EXCELLENT SPEAKERS

February 9, 2009

Wow these speakers blew me away! I installed them on a 96 Toyota Avalon and they are excellent ! For their size they deliver CLEAR highs and great sound!! and then of course i have the 15's to take care of the bass!! GREAT PRODUCT

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Bryan

Spokane, WA

Overall
Durability
Value
Features
Design
Usability
They're great

December 19, 2008

I installed these in an 87' Toyota pickup as well as an Alpine deck.
Just 4" speakers but man they pack a bit of a punch. My old ones used to crackle and pop at over volume 5 on the alpine, these ones don't crackle or cut out at all.
Cons:
I managed to break a connector pin for one of the wires off the speaker itself, so i ended up soldering the wire to the speaker. I suppose it was just manhandling, and was more human error.

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Vladimir

Las Vegas, NV

Overall
Durability
Value
Features
Design
Usability
Good value

December 6, 2008

Good buy for your buck!They can handle a good amount of power without distortion,can get pretty good mid bass for such a small speaker and have very strong and clear highs,sometimes too strong!The only weak point is the way they reproduce the mids - around 500hz the response is not that good,may be cause they are too soft . . . Any way,good overall!

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Accessory Tools and Products

Accessories added

Streetwires 50 ft. of True Spec 16 Gauge Speaker Wire

You need speaker wire to connect your speakers!

Your Price $29.99

Belva 23 ft. of True Spec 16 Gauge Speaker Wire

100% Copper Clad Aluminum, PVC blended jacket for easy installation and high strand count for maximum audio quality

Your Price $12.99

16-14 AWG Butt Connectors

These blue butt connectors are ideal when connecting thicker speaker wire your new aftermarket speakers!

Your Price $4.99

16-14 AWG Blue T-Tap Adapters

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

Your Price $4.49

16-14 AWG Quick Disconnect Connectors

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

Your Price $7.99

Dynamat Xtreme Speaker Kit 10415

Enough sound dampening for 2 speakers!

Your Price $17.95

Stinger Roadkill Speaker Kit

Use this to eliminate rattle from your speakers!

Your Price $13.99

Car Stereo and Speaker Installation Tool Kit

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

Your Price $14.99

Xscorpion WDCR2 Window and Door Clip Remover

Removes and installs handle and window crank clips.

Your Price $6.99

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 $21.99

NVX SDRLR1 Sound Dampening Rubber Roller

Install your Sound Dampening with ease! This heavy duty rubber roller is designed specifically to install your NVX products!

Your Price $7.99

XTC 4" Round Foam Speaker Baffles

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

Your Price $8.99

4" x 6" to 4" Speaker Adapters

Perfect fit for 4" speakers!

Your Price $7.99

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Product Summary

Manufacturer

Model Number

SPS-400

UPC

793276601360

Weight

3.40lbs

Internal SKU

sps400

Internal Product ID

11569

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 SPS-400