Lii Audio Crystal 6

Full-range

Nominal diameter6.5″ / 211 mm
Resonance65 Hz
Q factor0.46
Sensitivity91.5 dB
Linear excursion± 6 mm
Program Power40 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 91.5dB
  • Frequency response 65 - 20000Hz

Thiele & Small parameters

  • Resonance frequency (free air) fS 65Hz
  • Mechanical quality factor QMS 3.75
  • Electrical quality factor QES 0.53
  • Total quality factor QTS 0.46

Large signal parameters

  • Maximum linear excursion xmax 6mm
  • Air volume displaced at xmax VD 85cm³
  • Power handling P 20W
  • Program power Pmax 40W

Voice Coil

  • Nominal impedance Z 4Ω
  • DC resistance RE 3.2Ω
  • Inductance (1kHz, estimated) LE 0.24mH
  • VC Diameter 25mm

Magnet

  • Force factor Bl 3.31N/A
  • Motor constant Bl/√RE 1.85N/√W
  • Diameter 135mm
  • Material vintage-style cobalt Alnico horseshoe

Diaphragm

  • Effective diameter 134mm
  • Effective area SD 141cm²
  • Moving mass MMS 6.11g
  • Moving mass (without air load) MMD 4.7g

Suspensions

  • Stiffness KMS 1.02N/mm
  • Compliance CMS 979µm/N
  • Equivalent volume to the compliance VAS 27.5L
  • Mechanical resistance RMS 0.67N·s/m

Dimensions

  • Nominal diameter 6.5
  • 211mm
  • Overall diameter 211mm
  • Volume occupied by the driver (estimated) 0.94L
Lii Audio Crystal 6 SPL & Impedance
Lii Audio Crystal 6 Dimensions

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