Lii Audio Fast 15

Full-range

Nominal diameter15″ / 390 mm
Resonance45.5 Hz
Q factor0.99
Sensitivity95.1 dB
Linear excursion± 5 mm
Program Power80 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 95.1dB
  • Frequency response 46 - 15000Hz

Thiele & Small parameters

  • Resonance frequency (free air) fS 45.5Hz
  • Mechanical quality factor QMS 3.48
  • Electrical quality factor QES 1.38
  • Total quality factor QTS 0.99

Large signal parameters

  • Maximum linear excursion xmax 5mm
  • Air volume displaced at xmax VD 441cm³
  • Power handling P 40W
  • Program power Pmax 80W

Voice Coil

  • Nominal impedance Z 8Ω
  • DC resistance RE 7.8Ω
  • Inductance (1kHz, estimated) LE 1.96mH
  • VC Diameter 38mm

Magnet

  • Force factor Bl 6.52N/A
  • Motor constant Bl/√RE 2.33N/√W
  • Diameter 135mm
  • Material Ceramic Y35

Diaphragm

  • Effective diameter 335mm
  • Effective area SD 881cm²
  • Moving mass MMS 38.3g
  • Moving mass (without air load) MMD 20.3g
  • Material Paper

Suspensions

  • Stiffness KMS 3.13N/mm
  • Compliance CMS 319µm/N
  • Equivalent volume to the compliance VAS 352L
  • Mechanical resistance RMS 3.15N·s/m

Dimensions

  • Nominal diameter 15
  • 390mm
  • Overall diameter 390mm
  • Volume occupied by the driver (estimated) 4.6L
Lii Audio Fast 15 SPL & Impedance
Lii Audio Fast 15 Dimensions

Similar speaker drivers to Lii Audio Fast 15

Eminence ALPHA-12A Mid Bass

Eminence ALPHA-12A

8 Ω
12Mid Bass
fS49 Hz
SD520 cm²
51 - 4300 Hz
QTS0.77
xmax2.4 mm
SPL1W93.4 dB
Bl/√RE3.39
Pmax300 W
MONACOR SP-302PA Woofer

MONACOR SP-302PA

8 Ω
12Woofer
fS45 Hz
SD542 cm²
45 - 4000 Hz
QTS0.89
xmax2.5 mm
SPL1W90.9 dB
Bl/√RE3.78
Pmax200 W