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S18 Subwoofer (Pre-Order)

18" subwoofer with 1000W of seismic bass integrated into a grand media console


S18 Subwoofer (Pre-Order)

18" subwoofer with 1000W of seismic bass integrated into a grand media console


  • Hides subwoofer in stylish decor
  • Place anywhere in room
  • No assembly required

For those that believe bigger is always better, the Rumblewood S18 seamlessly melds a massive 18″ 1000W subwoofer into an elegant and grand media console. Experience seismic bass, premium materials, exquisite craftsmanship, and sophisticated decor all in one.

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What’s Included

  • S18 Subwoofer
  • 3′ Power Cord
  • 6′ RCA Cable
  • Getting Started Guide


  • Durable and rugged design with high quality solid and engineered woods (no particle board)
  • Enormous 18″ Dayton Audio Ultimax speaker
  • Powerful low distortion 1000W Dayton Audio amplifier
  • Extra stiff speaker mounting panel (1.5″ thick)
  • Internal acoustic foam lining
  • Anti-vibration isolation feet
  • Adjustable high frequency cutoff
  • Both LFE and stereo line level inputs
  • Built-in EQ allows adjusting specific frequency higher or lower


  • Dimensions: 48″ wide x 22″ deep x 34″ tall
  • Weight: 134 lbs

Speaker: Dayton Audio UM18-22 18″ Ultimax Subwoofer

Dayton Audios Ultimax Series DVC subwoofers are purpose-built to move air and create clean, articulate, fast bass. Experience the apex of subwoofer design.

  • 18″ design for enormous air movement
  • Over 2″ of total cone travel!
  • 1000 watts RMS power handling
  • Dual mirror-imaged linear spiders ensure distortion-free excursion
  • Dual 2 ohm, 2-layer copper voice coils
  • Large vented pole piece and under-spider venting

Dayton Audio UM18-22 Specification Sheet

Amplifier: Dayton Audio SPA1000 1000W Subwoofer Plate Amplifier

The Dayton Audio SPA1000 subwoofer amplifier provides nearly a kilowatt of clean, reliable audio power—just what you need to get big sound out of large, low-efficiency subwoofer speaker systems.

  • High power Class AB output stage for clean, controlled output
  • Patented tracking downconverter power supply for high efficiency
  • Toroidal power supply transformer
  • Low frequency parametric EQ allows you to boost or cut for custom-tailored sound
  • Advanced soft clip circuitry improves headroom and protects woofers
  • OTC™ (Optimized Thermal Circuit) protects amplifier from potential heat damage
  • Hercules heat sinks dissipate and control heat for extreme reliability

Dayton Audio SPA1000 User Manual

See our FAQ for common questions and answers.