Fi Car Audio BTL4 12 D1

2x1Ω
2x2Ω

Subwoofer

Nominal diameter12″ / 318 mm
Resonance27.8 Hz
Q factor0.42
Sensitivity83.3 dB
Linear excursion± 33 mm
Program Power7000 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 83.3dB

Thiele & Small parameters

  • Resonance frequency (free air) fS 27.8Hz
  • Mechanical quality factor QMS 6.16
  • Electrical quality factor QES 0.45
  • Total quality factor QTS 0.42

Large signal parameters

  • Maximum linear excursion xmax 33mm
  • Air volume displaced at xmax VD 1584cm³
  • Power handling P 3500W
  • Program power Pmax 7000W

Voice Coil

  • Nominal impedance Z 2 x 1Ω
  • DC resistance (in series) RE 1.4Ω
  • Inductance (1kHz, in series, estimated) LE 1.65mH

Magnet

  • Force factor (in series) Bl 14.3N/A
  • Motor constant Bl/√RE 12.1N/√W

Diaphragm

  • Effective diameter 247mm
  • Effective area SD 480cm²
  • Moving mass MMS 391g
  • Moving mass (without air load) MMD 383g

Suspensions

  • Stiffness KMS 11.6N/mm
  • Compliance CMS 86µm/N
  • Equivalent volume to the compliance VAS 27.1L
  • Mechanical resistance RMS 11.1N·s/m

Dimensions

  • Nominal diameter 12
  • 318mm
  • Overall diameter 318mm
  • Baffle cutout diameter 283mm
  • Mounting depth 184mm
  • Volume occupied by the driver 2.27L


Similar subwoofers to Fi Car Audio BTL4 12 D1

Fi Car Audio BTL4 12 D2 Subwoofer

Fi Car Audio BTL4 12 D2

2 x 2 Ω
12 Subwoofer
fS27.8 Hz
SD480 cm²
QTS0.42
xmax33 mm
SPL1W83.1 dB
Bl/√RE12.1
Pmax7000 W