Lii Audio Crystal 8

Full-range

Nominal diameter8″ / 211 mm
Resonance37.5 Hz
Q factor0.63
Sensitivity90.1 dB
Linear excursion± 6 mm
Program Power50 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

Specifications

  • Sensitivity (1W, 1m, infinite baffle) SPL1W 90.1dB
  • Frequency response 38 - 20000Hz

Thiele & Small parameters

  • Resonance frequency (free air) fS 37.5Hz
  • Mechanical quality factor QMS 3.30
  • Electrical quality factor QES 0.76
  • Total quality factor QTS 0.63

Large signal parameters

  • Maximum linear excursion xmax 6mm
  • Air volume displaced at xmax VD 136cm³
  • Power handling P 25W
  • Program power Pmax 50W

Voice Coil

  • Nominal impedance Z 4Ω
  • DC resistance RE 3.2Ω
  • Inductance (1kHz, estimated) LE 0.35mH
  • VC Diameter 25mm
  • Winding material Silver

Magnet

  • Force factor Bl 3.31N/A
  • Motor constant Bl/√RE 1.85N/√W
  • Diameter 135mm
  • Material Ceramic Y35

Diaphragm

  • Effective diameter 170mm
  • Effective area SD 227cm²
  • Moving mass MMS 11g
  • Moving mass (without air load) MMD 8.5g
  • Material Paper

Suspensions

  • Stiffness KMS 0.611N/mm
  • Compliance CMS 1636µm/N
  • Equivalent volume to the compliance VAS 120L
  • Mechanical resistance RMS 0.79N·s/m

Dimensions

  • Nominal diameter 8
  • 211mm
  • Overall diameter 211mm
  • Volume occupied by the driver (estimated) 0.94L
Lii Audio Crystal 8 SPL & Impedance
Lii Audio Crystal 8 Dimensions

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