HELIX COMPOSE Ci3 W200FM-S3

Woofer

Nominal diameter8″ / 200 mm
Resonance67 Hz
Q factor0.76
Sensitivity89.6 dB
Linear excursion± 3.8 mm
Program Power150 W
Driver
Port
Combined
Frequency response
Hz
Impedance
Ω
Impedance Phase
°
Excursion
mm
Velocity
m/s
SPL
dB
Acoustical Phase
°
Group Delay
ms
Transient response
ms
Discard
Apply
  • Sensitivity (1W, 1m, infinite baffle) SPL1W 89.6dB
  • Frequency response 50 - 3000Hz

Thiele & Small parameters

  • Resonance frequency (free air) fS 67Hz
  • Mechanical quality factor QMS 4.25
  • Electrical quality factor QES 0.93
  • Total quality factor QTS 0.76

Large signal parameters

  • Maximum linear excursion xmax 3.8mm
  • Air volume displaced at xmax VD 81cm³
  • Power handling P 100W
  • Program power Pmax 150W

Voice Coil

  • Nominal impedance Z 3Ω
  • DC resistance RE 3.0Ω
  • Inductance (1kHz, estimated) LE 0.47mH
  • VC Diameter 25mm
  • Winding height HVC 11.6mm

Magnet

  • Force factor Bl 5.1N/A
  • Motor constant Bl/√RE 2.94N/√W

Diaphragm

  • Effective diameter 165mm
  • Effective area SD 214cm²
  • Moving mass MMS 18.8g
  • Moving mass (without air load) MMD 16.6g

Suspensions

  • Stiffness KMS 3.33N/mm
  • Compliance CMS 300µm/N
  • Equivalent volume to the compliance VAS 19L
  • Mechanical resistance RMS 1.87N·s/m

Dimensions

  • Nominal diameter 8
  • 200mm
  • Overall diameter 195mm
  • Baffle cutout diameter 174mm
  • Mounting depth 64mm
  • Volume occupied by the driver (estimated) 0.77L


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Hertz DCX 165.3 2 Way

Hertz DCX 165.3

4 Ω
6.5 2 Way
fS68 Hz
SD143 cm²
60 - 21000 Hz
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SPL1W88.8 dB
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Hertz DSK165.3 2 Way Kit

Hertz DSK165.3

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6.5 2 Way Kit
fS67 Hz
SD142 cm²
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HELIX Ci3 W200FM-S2 Woofer

HELIX Ci3 W200FM-S2

2 Ω
8 Woofer
fS72 Hz
SD214 cm²
50 - 3000 Hz
QTS0.88
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SPL1W89.4 dB
Bl/√RE2.98
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