The CVi-218S (Contra-Sub) is a portable, dual eighteen-inch dedicated subwoofer system designed to extend and supplement the low-frequency extension of CVi full range systems in live music and playback applications. The CVi-218S features two high-power, cast frame eighteen-inch transducers with 3″ voice coils for extended use during high SPL applications. Steel handles and pole mount cup are also featured for use as a base for pole-mounted full range systems. This configuration allows the two drivers to work together in the same acoustic space to reduce distortion components caused by driver mechanical non-linearity when the system is driven at high levels. The result is cleaner, smoother low-frequency reinforcement at higher SPL levels.

  • Portable live sound PA
  • DJ system PA
  • Auditoriums
  • Drum monitor sub
  • Clubs
  • Outdoor stages
Featured Data:
  • Model – CVi-218S
  • System Configuration – Dedicated subwoofer
  • Connections – 2 ea.—¼” Phone Jack and Neutrik Speakon
  • Low-Frequency System – Dual Reflex loaded 18″ transducer
  • High-Frequency System – N/A
  • Enclosure Type – Vented, polygon
  • Enclosure Structure – 18mm OSB, internal bracing
  • External Covering – Black polypropylene fiber
  • Grille Material – 18 gauge black powder coated steel
Performance Data:
  • Frequency Response – +/- 3 dB 51 Hz – 200 Hz
  • Operating Range – -10 dB 36 Hz
  • Nominal Impedance (Ohms) – Full Range 4 Ohms
  • Axial Sensitivity (dB SPL, 1W / 1M) – Full Range 100.5 dB
  • Calculated Maximum Output (dB SPL, @ 1M) – Full Range 134 dB
  • Power Handling (Watts) – RMS 600 W / Program 1200 W / Peak 2400 W
  • Nominal Directivity / -6dB points (Degrees) – Horizontal: N/A / Vertical: N/A


Weight 150 Lbs. (68 Kg)
Dimensions 46.50″ (1181mm) x 20.75″ (527mm) x 26.75″ (679mm)

CVI-218S Datasheet
CVI Series Cutsheet


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