Renkus-Heinz CFX218S
Black 1800W 18" Non-Powered Subwoofer


Renkus Heinz's externally-powered CFX218-S subwoofer uses advanced technology and application-driven engineering to bring live sound closer to the ultimate reference point: reality.

Cutting edge high-power woofers and large rock-solid enclosures in a classic vented direct radiating design provide the natural uncolored sub bass favored by audio professionals around the world.  Wherever audiences and operators demand the ultimate in sub bass performance, CFX218-S subwoofers deliver the emotional impact obtainable only from powerful dual 18 inch subwoofers.

The CFX218-S subwoofer was developed as a companion to other CF and CFX series loudspeakers in high level entertainment applications needing the powerful sub bass punch and physical impact associated with 18-inch subwoofers.

It is equally at home in fixed installations such as performance arts centers installations and in mobile applications where it will be moved on a regular basis.

Its enclosure is ruggedly constructed from multi-ply hardwood to withstand the abuse it will receive in portable application and it is rigidly braced and lined with fiberglass to suppress resonances and rattles, and to assure low distortion high level performance.

It is equipped with handles to assist in moving it around.  Tripod sockets on one long side and on one end allow it to be used as a mounting base for associated full range loudspeakers, eliminating the need to carry tripod stands.

Heavy duty 6-inch casters are available as an option for units that will be regularly moved from one location to another.


  • Powerful Dual 18-inch Subwoofer - Provides high-impact,high level sub-bass performance (134 dB peak
  • High Power, High Performance 18-inch Woofers - With longthrow magnetic structures assure linear cone movement at all powerlevels.


  • Virtually any application where the visceral impactobtainable only from high power 18" subwoofers is required.
  • Multi-channel A/V playback systems, live sound andmusic systems in clubs and discos, performing art centers, theaters, houses ofworship, etc.
  • High quality speech and music systems, surround soundsystems, board room systems, etc.
  • A/V rentals, portable sound systems for performing artists and lecturers,small bands, choral groups, etc.


  • Sensitivity: 98 dB (1 W/1m) @ 50 HZ
  • Max SPL: 134 dB peak
  • Freq. Response: 32 Hz to 100 Hz
  • Low Freq. Drivers - Dual model SSL18-10, 18" conewoofer; each 900 W program @ 8 ohms
  • Power Rating - 1800 Watts program @ 4 Ohms
  • Connectors: Looping Neutrik 4-pin connectors &screw terminals
  • Enclosure:  Multi ply hardwood, heavily braced;perforated metal grille
  • Finish: Black
  • Hardware: Handles (4), Universal mounting hardwarewith Metric M10 threads (16), Threaded tripod sockets (2)
  • Optional (sold separately)  Hardware: Heavy Duty casters (4)
  • Dimensions: 24-1/4" H x 48-1/2" W x 23-1/2" D (61.6 x123.2 x 60 cm)
  • Net Weight: 165 lbs. (75 kg)
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