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Alpine SPS-400 Type-S 4" 2-way car speakers

Item # 500SPS400

Alpine combines outstanding materials with superior construction to create their Type-S Series speakers.

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Alpine combines outstanding materials with superior construction to create their Type-S Series speakers.

Item # 500SPS400

About the Alpine SPS-400

Buck Pomerantz
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.
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-400 4" 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. 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.

Priced per pair

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Product highlights:

  • 4" 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: 97-22,000 Hz
  • sensitivity: 86 dB
  • top-mount depth: 1-13/16 "
  • warranty: 1 year
  • MFR # SPS-400

What's in the box:

  • Two 2-way 4" speakers
  • Two 4x6" speaker adapter brackets
  • Two 12" lengths of speaker wire (each length of speaker wire has quick-slides on one end and bare wire on the other end)
  • 8 Self-tapping screws
  • 8 Speed clips
  • 8 Machine screws
  • 2 Strips of self-adhesive foam
  • Warranty sheet
  • "Important Notice!" sheet

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4.5 out of 5 stars
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More details on the Alpine SPS-400

Pat M.

Features & specs

General
Speaker Size
Design 2-way
Tweeter Design Dome
Impedance (Ohms) 3.6
Tweeter Composition Silk
Woofer Composition Poly-mica
Woofer Surround Rubber
Parts Warranty 1 Year
Labor Warranty 1 Year
Specifications
Sensitivity (1W at 1 meter) 86
Sensitivity at 2.83 volts N/A
Frequency Response 97 - 22k Hz
Minimum RMS Wattage 2
Maximum RMS Wattage 45
Peak Power Handling (Watts) 140
Top-mount Depth (Inches) 1 11/16
Bottom-mount Depth (Inches) 1 13/16
Cutout Diameter or Length (inches) 3 1/2
Mounting Height (Inches) 0.475
Frame Width 3.982
Frame Length 3.982

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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-400'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 4" or 4x6" speaker.

Shallow-Design: The Alpine SPS-400 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.

4x6" Compatibility: The speaker comes supplied with a 4x6" speaker adapter bracket which allows you to mounting the SPS-400 in factory 4x6" locations.

No Grilles: No grilles are included with this speaker.

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