No Sales Tax
Free Shipping on Thousands of Products
Award-Winning Customer Service

Alpine Type-S 4"x6" Coaxial 2-Way Speakers - SPS-406

Abt Model: SPS406 | UPC Code: 793276601384
 Discontinued Product This item is no longer available from our website.
Click the link to view all of our 4 x 6 Inch Car Speakers
Alpine - SPS-406 - 4 x 6 Inch Car Speakers
Roll over image to zoom in
45 Watts RMS/140 Watts Peak Power Handling/ High Grade Strontium Magnet/ Optimized Air-Flow Design/ Poly-Mica Cone/ Square-Wire Short Voice Coil/ Sold As A Pair
Discontinued (details)
Your Shipping Zip Code: 20149 (change)

Product Questions - Ask

Average Customer Reviews

Product Details

Alpine Type-S 4"x6" Coaxial 2-Way Speakers, Model SPS406

The perfect sound solution upgrade. Introducing the 2008 Type-S speaker line up, with multiple size options to fit almost any vehicle. If you want to add incredible sounding Alpine speakers to your system, this is the way to go. This latest offering from the popular Type-S family of speakers is a best bet upgrade, and still budget-friendly.



  • Frame: Stamped Steel Shallow Frame
  • Mounting: Shallow Mounting Design
  • Magnet: High Grade Strontium Magnet
  • Cooling: Optimized Air-Flow Design
  • Voice Coil Type: Square-Wire Short Voice Coil
  • Motor Technology: Optimized Magnet
  • Cone Material: Poly-Mica Cone


  • Magnet Material: Ultra Low Distortion Magnet Design
  • Application Type / Design Detail: Internal / Swivel Tweeter
  • Tweeter Type: 3/4'' Wide Range Silk Dome Tweeter



  • Sensitivity: 87dB /W(1m)
  • Impedence: 3.6 Ohms
  • Frequency Response: 93Hz - 22kHz

Power Handling

  • Power Handling Capacity (Peak): 140 Watts
  • Power Handling Capacity (RMS): 45 Watts
  • CEA-2031 Power Rating: 45 Watts

Approximate Weight:

  • Shipping: 5 lbs
Need Accessories?
Sound Dampening Sound Dampening
Enjoy improved clarity and reduced distortion.
More reasons to buy the Alpine SPS-406 from Abt Electronics
  • is an authorized dealer (Learn More).
  • The Alpine SPS-406 is Brand New.
  • The Alpine SPS-406 Ships in a Factory Sealed Box.
  • Abt ships this product for free!


Sound Dampening
Sound Dampening
Enjoy improved clarity and reduced distortion.
Dynamat Mobile Xtreme Speaker Kit
In Stock
$ 26.99
Dynamat Xtreme Wedge Pak
In Stock
$ 51.95
Check here if you only want to add the selected accessories
to the cart and click the "add to cart" button for this item.


by PowerReviews
Alpine Type-S 4"x6" Coaxial 2-Way Speakers

(based on 2 reviews)

Ratings Distribution

  • 5 Stars



  • 4 Stars



  • 3 Stars



  • 2 Stars



  • 1 Stars



Reviewed by 2 customers

Displaying reviews 1-2

Back to top


Alpine Type S 4"x 6" coax


from IL

About Me Auto Professional


  • Easy To Install
  • Versatile


    Best Uses

      Comments about Alpine Type-S 4"x6" Coaxial 2-Way Speakers:

      Very good as a " filler speaker " in the back door of a 2002 gmc sierra, also very easy to install.

      • Was this a gift?:
      • No

      (1 of 1 customers found this review helpful)


      Sooooooooo much nicer!!!


      from Michigan

      About Me Practical

      Verified Buyer


      • Compact
      • Great Power
      • Great Sound
      • Versatile


        Best Uses

        • Small Cars

        Comments about Alpine Type-S 4"x6" Coaxial 2-Way Speakers:

        The car we installed these Alpine speakers in is a 1997 Pontiac Grand Am GT. The package came very promptly from Abt and well wrapped and boxed. During installation, we had a few issues, but they were more issues with the Pontiac's door panel engineering than the design of the speakers. We thought we would have to remove the whole door panel, but found that extremely difficult to do, so we were able to install the speakers via the speaker cage hole (after some delicate maneurvering).

        Once installed, the speakers were 100% better than the worn out stock speakers that were previously there. While my findings were consistent with other reviews of this product in that the speakers are very treble / mid range friendly and not so well balanced with the bass, they are everything I need and more (since I listen to mostly alternative and jazz music). I think though that they would make a good complement to some nice 6x9's or a subwoofer, so you can hear not only your high quality bass tones but the rest of the music as well =)
        Very crisp, very clear, and very clean, I highly reccomend them!!

        Displaying reviews 1-2

        Back to top

        Alpine Type-S 4"x6" Coaxial 2-Way Speakers

        Alpine Type-S 4"x6" Coaxial 2-Way Speakers


        Call us
        live chat
        Chat Now