VIBE Audio BlackDeath BD15D2SPL-V4

2x1Ω
2x2Ω

Subwoofer

Nominal diameter15″ / 392 mm
Resonance36.7 Hz
Q factor0.71
Sensitivity86.6 dB
Linear excursion± 25 mm
Program Power6000 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 86.6dB
  • Frequency response 15 - 850Hz

Thiele & Small parameters

  • Resonance frequency (free air) fS 36.7Hz
  • Mechanical quality factor QMS 2.44
  • Electrical quality factor QES 1.00
  • Total quality factor QTS 0.71

Large signal parameters

  • Maximum linear excursion (one way) xmax 25mm
  • Maximum excursion before damage xlim 38mm
  • Air volume displaced at xmax VD 1887cm³
  • Power handling P 3000W
  • Program power Pmax 6000W
  • Peak power Ppeak 9000W

Voice Coil

  • Nominal impedance Z 2 x 2Ω
  • DC resistance (in series) RE 3.8Ω
  • Inductance (1kHz, in series) LE 1.14mH
  • VC Diameter 70mm
  • Winding height HVC 70mm

Magnet

  • Force factor (in series) Bl 18.2N/A
  • Motor constant Bl/√RE 9.34N/√W
  • Air gap height HAG 20mm
  • Weight 5.67kg

Diaphragm

  • Effective diameter 310mm
  • Effective area SD 755cm²
  • Moving mass MMS 318g
  • Moving mass (without air load) MMD 302g

Suspensions

  • Stiffness KMS 23.9N/mm
  • Compliance CMS 41.8µm/N
  • Equivalent volume to the compliance VAS 33.9L
  • Mechanical resistance RMS 29.9N·s/m

Dimensions

  • Nominal diameter 15
  • 392mm
  • Overall diameter 392mm
  • Baffle cutout diameter 375mm
  • Mounting depth 300mm
  • Volume occupied by the driver (estimated) 4.6L

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