DB Drive G7 15.2

2x1Ω
2x2Ω

Subwoofer

Nominal diameter15″ / 381 mm
Resonance23.5 Hz
Q factor0.47
Sensitivity84.3 dB
Linear excursion± 35 mm
Program Power8000 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 84.3dB

Thiele & Small parameters

  • Resonance frequency (free air) fS 23.5Hz
  • Mechanical quality factor QMS 2.47
  • Electrical quality factor QES 0.57
  • Total quality factor QTS 0.47

Large signal parameters

  • Maximum linear excursion xmax 35mm
  • Air volume displaced at xmax VD 2639cm³
  • Power handling P 4000W
  • Program power Pmax 8000W

Voice Coil

  • Nominal impedance Z 2 x 2Ω
  • DC resistance (in series) RE 3.2Ω
  • Inductance (1kHz, in series, estimated) LE 4.24mH
  • VC Diameter 76.2mm

Magnet

  • Force factor (in series) Bl 19.6N/A
  • Motor constant Bl/√RE 11N/√W
  • Material Ferrite

Diaphragm

  • Effective diameter 310mm
  • Effective area SD 754cm²
  • Moving mass MMS 466g
  • Moving mass (without air load) MMD 451g

Suspensions

  • Stiffness KMS 10.1N/mm
  • Compliance CMS 99µm/N
  • Equivalent volume to the compliance VAS 79.8L
  • Mechanical resistance RMS 27.9N·s/m
  • Surround material Foam

Dimensions

  • Nominal diameter 15
  • 381mm
  • Overall diameter 402mm
  • Baffle cutout diameter 352mm
  • Mounting depth 298mm
  • Volume occupied by the driver (estimated) 4.9L
  • Frame material Aluminium


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