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15″ C3 Series Subwoofer — Dual 4 ohm, 1500 W RMS
  • 15″ C3 Series Subwoofer — Dual 4 ohm, 1500 W RMS
  • 15″ C3 Series Subwoofer — Dual 4 ohm, 1500 W RMS
  • 15″ C3 Series Subwoofer — Dual 4 ohm, 1500 W RMS
  • 15″ C3 Series Subwoofer — Dual 4 ohm, 1500 W RMS
  • 15″ C3 Series Subwoofer — Dual 4 ohm, 1500 W RMS
  • 15″ C3 Series Subwoofer — Dual 4 ohm, 1500 W RMS
15″ C3 Series Subwoofer — Dual 4 ohm, 1500 W RMS

15″ C3 Series Subwoofer — Dual 4 ohm, 1500 W RMS

$650.00

The Concrete Audio C315LD4-USA is a 15″ C3 Series subwoofer engineered for deep, commanding bass and rugged reliability in high-output audio systems. Featuring a dual 4 ohm voice coil configuration and 1500 W RMS power handling (3000 W maximum), this sub delivers impactful low-frequency output perfect for competition builds, show vehicles, and custom daily drivers. 

Built for serious performance, the C315LD4-USA integrates a gloss grey die-cast aluminum basket, high-roll foam surround, and double-stitched triple joint ring to support enhanced excursion and durability. A 4″ high-temperature USA voice coil paired with a premium 5-100 oz magnet delivers controlled cone movement and reliable thermal stability under load. 

Key Specs:

  • Driver Size: 15″ subwoofer

  • Power Handling: 1500 W RMS / 3000 W max 

  • Impedance: Dual 4 ohm

  • Basket: Gloss grey die-cast aluminum 

  • Voice Coil: 4″ high-temp USA coi

  • Magnet: 5-100 oz premium grade 

  • Mounting Depth: 9.75″

  • Cut-Out: 13 3/8″

Designed to integrate easily into sealed or ported enclosures, the C315LD4-USA provides powerful, clean bass reproduction for any custom audio project.

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