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Helix Compose i7 W165FM-S3


  • 6.5” / 165 mm high-end midbass which combines outstanding sound performance with versatile physical integration options
  • High efficiency and 3 Ohms technology for maximized power output of the amplifier
  • Ultra High Damping (UHD) crafted paper cone for outstanding impulse response and unmatched frequency response
  • High-tech polymer composite basket reinforced with glass beads for enormous rigidity and minimized ringing
  • Specially shaped rubber surround for high linear cone excursion
  • Polyurethane dustcap for optimized frequency response in the upper midrange area
  • Large 1.46” / 37 mm voice coil ensures minimum thermal compression and high power handling
  • Automotive grade ProConnect connection terminal allows the use of conventional speaker cables or a fast, secure and fail-safe connection via optionally available WireKits
  • Powerful magnet system for highest efficiency and extremely low distortion
  • Designed for the optionally available car-specific FlexMount165 adaptors which allow an acoustically optimized and professional integration in the original mounting location of the vehicle
  • Designed for optionally available, car-specific WireKits which allow a non-destructive integration
  • Made in Germany

Helix Compose i7 W165FM-S3

  • Power Handling RMS / MAX P 150 / 225W
    Impedance Z 3 Ω
    DC Resistance Re 2.9 Ω
    Frequency Response   50 Hz - 3,500 Hz
    Resonance Frequency Fs 60 Hz
    Mechanical Q Factor Qms 3
    Electrical Q Factor Qes .68
    Total Q Factor Qts .55
    Compliance Cms 480 µm/N
    Equivalent Air Volume Vas 11.6 L
    Force Factor B*l 4.8 Tm
    Sensitivity SPL 92 dB @ 2.83 V / 1m
    88 dB @ 1W / 1m
    Cone Area Sd 131 cm²
    Moving Mass Mms 14.8 g
    Cone Material   UHD Crafted Paper Cone
    Mechanical Resistance Rms 1.83 kg/s
    Voice Coil Diameter ø 37 mm
    Voice Coil Heigh   13.4 mm
    Max Linear Excursion Xmax +/- 3.7 mm
    Outer Diameter ø 165 mm / 6.5"
    Installation Diameter ø 142 mm / 5.59"
    Installation Depth   65.8 mm / 2.59"


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