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Alpine SPS-406

Type-S 4"x6" 2-way car speakers

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Item# 500SPS406 offer details

Item# 500SPS406

Review Sumary

 
Out of Stock
 
Expected: 2/27/2012
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Alpine

Our take on the Alpine SPS-406

Alpine Authorized Online Dealer

Alpine combines outstanding materials with superior construction to create their Type-S Series speakers. Upgrade your factory speakers with these Alpines, and they'll fill your vehicle with high-fidelity sound at a reasonable cost.

The SPS-406 4"x6" speakers use strong, lightweight polypropylene-mica woofers to handle the lower frequencies. Air-injected rubber surrounds keep cone movement under tight control, eliminating distortion and enhancing bass. Stamped steel frames provide rugged support for these speakers, and their low profile allows them to fit in more factory locations.

The 3/4" silk dome tweeters play your high notes smoothly and comfortably with no hint of harshness. You can also swivel the tweeters up to 10 degrees to improve the stereo image at your listening position. These efficient Type-S speakers will sound great with a low-powered factory radio, but they're also made to handle the high power output of an external amplifier. Grilles are not included — factory grilles are appropriate for most installations.

Get more info on this product

Highlights:

  • 4"x6" 2-way speakers (pair)
  • polypropylene-mica woofer cone with air-injected rubber surround
  • 3/4" silk dome tweeter
  • power range: 2-45 watts RMS (140 watts peak power)
  • frequency response: 93-22,000 Hz
  • sensitivity: 87 dB
  • top-mount depth: 1-3/4"
  • warranty: 1 year
  • Our 60-day money-back guarantee

Priced per pair
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

Features and Specs
General
Design
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2-way
Tweeter Design
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Dome
Tweeter Composition
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Silk
Woofer Composition
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Poly-mica
Woofer Surround
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Rubber
Parts Warranty
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1 Year
Labor Warranty
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1 Year
Specifications
Sensitivity
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87 dB at 1 watt
Frequency Response
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93 - 22k Hz
RMS Power Range (Watts)
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2-45
Peak Power Handling (Watts)
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140
Impedance (Ohms)
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4
Top-mount Depth (Inches)
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1 3/4
Bottom-mount Depth (Inches)
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1 7/8

Product Research

Product Research
What's in the box?

Download owner's manual

  • Two 2-way 4x6" speakers
  • 2 Plastic metric-to-standard adapter rings (for top-mount applications)
  • 2 Metal metric-to-standard adapter rings (for bottom-mount applications)
  • 2 Plastic bottom-mount spacer rings
  • 2 Strips of self-adhesive foam
  • Two 12" lengths of speaker wire (each length of speaker wire has quick-slides on one end and bare wire on the other end)
  • Eight 13/16" self-tapping screws
  • Eight 5/8" self-tapping screws
  • Eight 1/4" self-tapping screws
  • 8 Machine screws
  • 8 Flat washers
  • 8 Speed clips
  • 8 Speed nuts
  • Warranty sheet
  • "Important Notice!" note
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

Poly-Mica Cone: Each speaker features a Poly-Mica cone. Mica adds strength and heat resistance to polypropylene, resulting in reduced distortion and improved reliability.

Air-injected Rubber Surrounds: For a smoother response and improved durability, the woofers use air-injected rubber surrounds.

Silk Dome Tweeters: Each speaker has a 3/4" Wide-Range Silk Dome Tweeter for smooth high frequencies.

Highly Efficient Design: The SPS-406's high-efficiency design allows the speaker to be run off of your factory or aftermarket head unit, resulting in an easy system improvement for many vehicles requiring a 4x6" speaker.

Shallow-Design: The Alpine SPS-406 features a stamped steel shallow frame. This shallow mounting design allows for easier installation in a wide range of door panels giving you a perfect fit.

Mounting: The speakers can be mounted in a metric 4x6" opening, or, using the supplied adapter rings, the speakers can be mounted in a U.S. standard 4x6" opening. The speakers also come with bottom mount spacer rings.

No Grilles: No grilles are included with this speaker.

 

Product reviews from the Crutchfield Labs

Product reviews from the Crutchfield Labs (what are the Labs?)
Video: Alpine Type-S Car Speakers

Video: Alpine Type-S Car Speakers

Ken Nail, J.R. Stoffel
1/21/2009
based on 15 ratings
 
Learn about some of the features that make Alpine Type-S car speakers a strong choice for great-sounding car audio.
 

Product Reviews

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1-10 of 17 items >> Sort Results By: Date Reviewed | Rating | Helpfulness
 
3 out of 5

A little too bright

Written By clayr, wilmington, nc on Saturday, February 04, 2012
 
OK - as far as installation, no one beats Crutchfield - great directions, fast deliver, they rock.

Speakers - i bought because i trust the Alpine brand, but i was disappointed, if only from a perspective of how these speakers are presented for use. I bought them (along with a set of Kickers) to replace the stock speakers in my 2003 Silverado, set up with a Kenwood Excelon KDC-395. They were listed as replacements for the rear door 4x6 speakers. After the install they sound very clean, and very bright - but TOO BRIGHT. no matter how i adjusted the head unit, i could not get any low end from the speakers. So i decided i really needed 6x9's, even if i have to cut the door panel. I felt a little bad returning them, until i re-installed the stock speakers to hold me over, and they stock speakers have more low end - sounded BETTER - than these. I think they are good speakers, but better suited for a front door setup, not the rear where you need some bottom end. (I put the same head unit in my daughters car with 6x9's in the back and there is PLENTY of bottom end - even without an amp and subs).

so that's my comments - might work well in some setup, but not as the rear speakers. Get out your metal cutter and put those 6x9's in.
Pros:
good sound - bright and clean
Cons:
TOO bright
Was this review helpful?    Yes | No
 
5 out of 5

Awesome

Written By Chris, Danbury, CT on Monday, August 29, 2011
 
I installed this myself in the dash of my 2001 s-10 Zr2. Everything said they won't fit in stock spots without modifications. I plugged them in to my factory wiring with the wiring adapter that was included n with no modifications they fit tightly . They sound awesome along with the alpine cda-105 headunit, and the alpine SPS-600C Type-S 6-3/4" component speakers n tweeters Rock out clear n great. Cannot wait to add my jvc arsenal 10" sub! These speakers way surpassed my expectations for $79.99!!!!!!!!!
Was this review helpful?    Yes | No
 
4 out of 5

porsche 944

Written By mike, Totowa nj on Saturday, August 20, 2011
 
First of all I want to say that I love dealing with Crutchfield! They're always very helpful when you have problems! I really like these speakers a lot! They sound great with my JVC BonJiovi powered stereo! Crisp and clear! Especially for only being a two way speaker! There might be better speakers out there than these but they wouldn't fit in the front doors of my car. Trust me.. The price of these is very very low for the quality of the sound! Not a ton of bass but there's no way of getting that from a 4by6!

The front speakers just barely fit in and the grill is bulging out just a little bit. But in the rear I could have gone with something a little bigger magnet wise... but still stay with a 4 by 6. The hardest part of the rear install was pulling the vinyl apart without tearing it! (fingertip strength) The rest is really not that hard! I built up the rear footwell with a lot of layers of foam so that I could sit back there and work!
1 out of 1 people found this helpful
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5 out of 5

Alpine SPS-406

Written By Adam, Tulsa Ok on Saturday, November 20, 2010
 
Replaced my stock 4x6 speakers in my 03 ext cab silverado. Huge improvement,
clarity and range of music are the biggest changes. Install was easy although
the speaker installation instructions are lacking. Crutchfield instructions
included helped out with proper and simple door removal. Overall very
satisfied. Still running them on the stock stereo, power handling dictates
turning the volume up a little more than before with stock speakers. Love the
sound, very good alpine speakers.
Adam
2 out of 2 people found this helpful
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5 out of 5

2002 cavalier

Written By Tyler, Abington Pa on Saturday, August 21, 2010
 
To start off i just bought a 2002 cavalier, and i wanted to upgrade my audio system. So I got a full system. I got a Kenwood Excelon KDC-X494 headunit, these 4x6 sps alpine speakers for the doors, 6x9 sps speakers for the rear, Kenwood KAC-6404 4 chan amp for the speakers, a jh600 mtx mono block amp, and a JL Audio 12W3v3-4 subwoofer.

I also put bass blockers to these speakers because thats what my subwoofer is for. I did test the bass before adding the blockers, and it was fine for a 4x6, but not great. I will say however the mids and highs sounded great with my amp. I would suggest these to anyone building a system. They make my music sound full and lively.
1 out of 1 people found this helpful
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4 out of 5

Adapter brackets did the trick

Written By Rod, Raleigh, NC on Wednesday, June 09, 2010
 
These speakers fit perfectly in my '91 Corvette. The OEM's have a rectangular frame and these came with two different adapter plates to choose from to create a perfect fit.
Was this review helpful?    Yes | No
 
5 out of 5

Alpine SPS-406

Written By joey, clifton, nj on Sunday, January 31, 2010
 
just installed these in a 04 chevy cavalier. it says they dont fit but it was a perfect fit. they sound great! it and it was a perfect install no mod required to get them to fit into the factory brackets!
1 out of 1 people found this helpful
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4 out of 5

Improvement over Wrangler Stock Speakers

Written By , Mt. Pleasant on Wednesday, January 06, 2010
 
I paired the SPS-406 with Alpine SPS-500s in the roll bar and a Kenwood KDC-X493 head unit. A noticeable improvement over the cheap paper stock speakers on the 2005 Wrangler. A little more bass comes out and the mids and highs are clean & crisp. Don't make the same mistake I made and expect miracles from these speakers. A woofer and tweeter of this size can only do so much. Crutchfield provided prompt service as always and their technical support is awesome. The installation instructions on the speaker box made pairing up the speakers to the adapter plates a real chore.
[Editor's Note: The adapter needed to install 4x6" speakers in the wrangler dash is no longer available. We now recommend 4" speakers for this location.]
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5 out of 5

Great Speakers!

Written By Daniel, Fort Knox, KY on Wednesday, October 14, 2009
 
First- If you are buying these for the rear panels of an 88-93 Chevy Truck, these are NOT direct fit!!! The opening needs to be slightly modified to accept the metal spacer, or the trim will have to be modified if you use the plastic spacer (which works a little better IMO). As for the speakers, they sound absolutely terrific. Clarity even at very loud volumes is excellent. If you expect a lot of low end, you're looking at the wrong size speaker. These work best with bass blockers and a subwoofer installed for low-end frequencies. They can handle plenty of power, so match them up with a strong enough head unit to maximize results. Great mid and high tones, and as i mentioned before, clarity is awesome. Instructions in the box are terrible. It took me about 30 minutes to figure out what the diagram (no written instructions) were showing, but maybe that was just me. As always, Crutchfield is great and gives you everything you need to do the install except for the trim removing tool (you'll need it). Overall, very pleased with these speakers!
5 out of 5 people found this helpful
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4 out of 5

Cant beat the price

Written By Rafael, Santa Clara, Ca on Thursday, June 18, 2009
 
Let's face it, for the price you pay for these speakers you can't go wrong.
Try hooking these speakers up to an amp, you'll love the way they sound
for the price you pay. I would buy these speakers again.
1 out of 1 people found this helpful
Was this review helpful?    Yes | No
 
1-10 of 17 items >>
Learn more about 4"x6" Speakers

Learn more about 4"x6" Speakers

Why Buy New Car Speakers?

Why Buy New Car Speakers?

Ken Nail
1/29/2009
based on 274 ratings (5 comments)
 
If you want your music to sound great, you can't ignore car speakers. Dollar for dollar, new speakers are one of the best ways to improve your car's sound.
 
Car Speakers Installation Video

Car Speakers Installation Video

Video Guest
6/25/2008
based on 90 ratings (2 comments)
 
A brief video covering the basics of installing car speakers.
 
Car Speakers: What to Look For

Car Speakers: What to Look For

Ken Nail
1/29/2009
based on 552 ratings (12 comments)
 
With so many speakers available, it's important to understand what to look for. Keep these points in mind, and your system will sound its best.
 
How Tweeter Design Affects Sound

How Tweeter Design Affects Sound

Ken Nail
12/9/2011
based on 31 ratings (3 comments)
 
When you're shopping for speakers, don't forget the tweeter. It's shape and the material it's made from have a direct impact on how your music sounds. Tweeters reproduce the upper frequencies in your...
 
Component Speakers Installation Video

Component Speakers Installation Video

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6/20/2006
based on 65 ratings (1 comment)
 
A 5-minute video that shows the basics of installing a component speaker system in a car.
 

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Alpine SPS-406
Alpine SPS-406
Type-S 4"x6" 2-way car speakers
$79.99
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Alpine SPS-406