FLEXY X F-218sa

Active Dual 18-Inch Subwoofer

FLEXY X is powerful sound Line Array Speaker System, this series adapting to different preferences and scale of applications. With high performance offers various combinations and choices always herewith a proper solution that meets your need. The true modular design provides FLEXY X series amazing flexibilities to be combined, split and extended freely from 300 people to 8000 people scaled application, from the simplest 2+1 mono to 4-way large system. Benefiting from exceptional analog circuit and D-class switching power technologies, the active product is well recognized for high quality and reliability.

FLEXY X Application

Rigging System
Fixed Installation
Ground Stacked
Main PA
Live Sound & Tour


  • 18-inch dual active subwoofer speaker.
  • Driver high quality with Two 18” (100mm Voice Coil) Ferrite.
  • Designed deliver an output of high efficiency, great lower range deep frequency and excellent dynamics.
  • Class-D Amplifier Module with Analog Circuit Technology.
  • Huge Switching Power Supply.
  • Ultra-compact and solid enclosure high quality birch plywood.
  • Finished with superb polyurea paint which features anti-scratch and waterproof.
  • 4 lockable wheels design offers easy movement.
  • Applications with ground stacked upright or crosswise with F-ONE SA and for main PA with F-ONE line array speaker as front fill system.


MODEL F-218s F-218sa
Frequency Response (±3dB) 30 Hz~100 Hz 30 Hz~100 Hz
Frequency Range (–10dB) 25 Hz~120 Hz 25 Hz~120 Hz
Horizontal Coverage
Vertical Coverage
LF Power Rating (AES) 1600W @4Ω 1600W
HF Power Rating (AES)
Sensitivity (@1W/1m)  LF/HF 101 dB 101 dB
Maximum SPL  LF/HF 133 dB 133 dB
Peak SPL  LF/HF 139 dB 139 dB
Driver LF Two 18” (100mm Voice Coil.) Ferrite Two 18” (100mm Voice Coil.) Ferrite
Driver HF
Connectors 2 Neutrik NL4 Neutrik  XLR + POWERCON + SPEAKON
Connection Method LF : 1+1-
Enclosure 15mm, 18mm, 24mm Multilayer Birch Plywood 15mm, 18mm, 24mm Multilayer Birch Plywood
Grille Black Steel Mesh + Acoustic Transparent Cloth Black Steel Mesh + Acoustic Transparent Cloth
Finish Black Polyurethane Paint Black Polyurethane Paint
2 Channels Class-D Amp Module@4Ω SUB Channel 1 SUB Channel 2
2500W 2500W
THD (1Khz,Full Power 4Ω) 1%
Signal to noise ratio 103 dB 103 dB
Active Gain (1KHz, 8Ω) 32 dB 32 dB
Input Neutrik & Male XLR & Female XLR
Input Impedance 20K Ω Balanced / 10K Ω Unbalanced
Input Connection (Full-Range)
Input Connection (Sub) Neutrik NL4MP (SUB: 1+1-)
Cooling System The airffow direction from back to front
Voltage Requirements 200-240V ~ 50-60Hz
Dimensions (H x W x D) 750 x 535 x 1158 mm 750 x 535 x 1158 mm
Net Weight 83 kg 90 kg



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