12" - 1600 W Max Power, Single 4 Ohm Voice Coil, Champion Series- Component Subwoofer

  • 1600 W Max Power/500 W Nominal Power
  • Single Voice Coil
  • Honeycomb IMPP™ Composite Cone Structure
  • Dual layer fiber reinforced elastic polymer surround


The Champion Series subwoofers have evolved from Pioneer’s award winning “SPL Champion Edition” lineup, known for its deep and powerful bass production. The TS-A301S4 12” single-voice coil component subwoofer features a re-designed large and powerful motor assembly for improved efficiency and sensitivity. The subwoofers basket are optimized using a reinforced structure design for added strength and reduced vibration to deliver excellent sound quality. This subwoofer has continuous power of 500 watts with a maximum peak of 1,600 watts. It features an advanced 2-piece durable Honeycomb IMPP™ composite cone structure plus a rigid drive cone to deliver high output levels with reduced distortion.

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Champion Series

The Pioneer Champion Series Subwoofers deliver powerful bass from their 12” subwoofers. These subwoofers are offered in either a dual or single 4-Ohm voice coil design with the ability to handle high power input at higher volume without compromising sound quality.

subwoofer close up

Iconic Champion Series Cosmetics

The Champion Series Subwoofers features iconic design elements that are symbolic to the subwoofer’s lineage including red graphics design decals; spider; and “Champion” cursive script.

sound adjustment

Dual Layer Surround

A lighter and more durable surround, this subwoofer is comprised of elastic polymer and reinforced fiber to support the woofer during cone excursion for accurate and powerful bass.


2 layer cone

Advanced 2-Piece Cone

Designed with a highly rigid and durable Honeycomb IMPP™ composite seamless cone plus a rigid drive cone for deeper and louder bass reproduction.

sound adjustment

Large and Powerful Motor Assembly

The Champion Series subwoofers are designed with bigger voice coils and larger double stacked magnets to handle more power

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Reinforced Basket

Featured in this Champion subwoofer is an enclosure basket structure that is designed to support the steel basket by reducing the spread of vibration that causes bass loss frequency.


basket image

2-Plate Magnetic Circuit

This subwoofer features a 2-plate magnetic circuit utilizing two magnet layers with thicker voice coil wiring wound around an aluminum bobbin for improved heat resistance and dispersion.

carfit sound logo


Pioneer’s CarSoundFit app is actually a car sound simulator for experiencing in-car sound with your own smartphone. Hear the difference between original car speakers and different Pioneer audio upgrades: convince yourself of the level of quality Pioneer can offer for your vehicle. For a virtual listening demonstration of these and many other Pioneer car speakers, download the free Pioneer CarSoundFit app.

Smart Sync app   Smart Sync App

What’s in the Box

  • (1) 12" Component Subwoofer
  • (8) Screws
  • (1) Gasket
  • One Year Warranty sheet
Standards & Performance
  • 500 W
  • 20 Hz to 1.6 kHz
  • 1600 W
  • 4-ohm
  • 92 dB
  • Component
  • 11.125"
  • 34.1
  • 38
  • 7.7
  • 3"
  • 6.5"
  • 1.5 Cu Ft / 42.5 Liters
  • 1.25 Cu Ft / 35.4 Liters
  • 6.125"
  • 0.64
  • Steel
  • Polypropylene
  • Poly cotton
  • Cellulose Fiber
  • ABS
  • Ferrite
  • 90 oz
  • Elastic Polymer / Reinforced Fiber
  • Rolled
  • Aluminum
  • Single Voice
  • Copper
  • Push Type
  • Pioneer Champion Series TS-A301S4 - Whats in the Box

    Pioneer Champion Series TS-A301S4 - Whats in the Box

  • Pioneer Champion Series Subwoofers real life testing 2022

    Pioneer Champion Series Subwoofers real life testing 2022

  • TS-A301D4 and TS-A301S4 System Overview

    TS-A301D4 and TS-A301S4 System Overview

  • Pioneer Champion Series TS-A301S4 - System Overview

    Pioneer Champion Series TS-A301S4 - System Overview