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Item#: 9SIA1RT0P34121

Alpine SPS-406 4" x 6" 140 Watts Peak Power 2-Way Speaker

  • Poly-Mica Cone
  • 0.75" Wide Range Silk Dome Tweeter
  • 93 Hz - 22 kHz
  • 3.6 Ohms Impedance
  • Sensitivity 87 dB
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Alpine takes the car speakers performance to a new level with the Type-S speaker. 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 speakers is a best bet upgrade, and still budget-friendly. Get the Alpine Type-S speakers today and enjoy the hair-rising sound from your car entertainment system.

  • newegg Packing a Punch Turn up the volume. These speakers deliver amazing lows, mids, and highs. Become a believer once you hear the difference between stock and Alpine sound quality. Upgrade your system and see what you've been missing.
  • newegg Versatile Upgrade With a shallow mounting design, these speakers allow for easy installation in a wide range of door panels giving you a perfect fit. Their high-efficiency design can run off of the built-in amplifier power from the factory or Alpine head unit, resulting in an easy system improvement for any vehicle.
  • newegg Silk Dome Swivel Tweeters The Type-S coaxial speakers use a soft dome silk tweeter for excellent high frequency sound reproduction. The tweeters can swivel up to 10 degrees so you can adjust for the optimum listening position.

Learn more about the ALPINE AUTO ELECTRONICS SPS-406


2-way Speaker
Speaker Size
4" x 6"


Woofer Material
Poly-Mica Cone
0.75" Wide Range Silk Dome Tweeter
Voice Coil
Square-Wire Short Voice Coil
Magnet Construction
Tweeter Magnet Material: Ultra Low Distortion Magnet Design

Woofer Magnet: High Grade Strontium Magnet
Frame Construction
Stamped Steel Shallow Frame


Peak Power
140 Watts
RMS Power
45 Watts
87 dB
Frequency Response
93 Hz - 22 kHz
3.6 Ohms
Mounting Depth


Tweeter Application Type / Design Detail: Internal / Swivel Tweeter

Woofer Cooling: Optimized Air-Flow Design

Woofer Mounting: Shallow Mounting Design
Package Contain
Pair of Speakers

Manufacturer Warranty

1 year limited
1 year limited

Quick Info


  • Limited Warranty period (parts): 1 year
  • Limited Warranty period (labor): 1 year

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Electronics > 
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Item#: 9SIA1RT0P34121
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