GAS Audio Power MAD S3-12D2

2x2Ω

Subwoofer

Nominal diameter12″ / 300 mm
Resonance29 Hz
Q factor0.35
Sensitivity87.9 dB
Linear excursion± 13.5 mm
Program Power1200 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 87.9dB
  • Frequency response 20 - 200Hz

Thiele & Small parameters

  • Resonance frequency (free air) fS 29Hz
  • Mechanical quality factor QMS 3.93
  • Electrical quality factor QES 0.39
  • Total quality factor QTS 0.35

Large signal parameters

  • Maximum linear excursion (one way) xmax 13.5mm
  • Air volume displaced at xmax VD 663cm³
  • Power handling P 600W
  • Program power Pmax 1200W

Voice Coil

  • Nominal impedance Z 2 x 2Ω
  • DC resistance (in series) RE 3.6Ω
  • Inductance (1kHz, in series) LE 2.71mH
  • Winding material Copper
  • Former material TIL

Magnet

  • Force factor (in series) Bl 16.5N/A
  • Motor constant Bl/√RE 8.7N/√W
  • Material Ferrite

Diaphragm

  • Effective diameter 250mm
  • Effective area SD 491cm²
  • Moving mass MMS 158g
  • Moving mass (without air load) MMD 150g
  • Material Non-pressed paper

Suspensions

  • Stiffness KMS 5.38N/mm
  • Compliance CMS 186µm/N
  • Equivalent volume to the compliance VAS 62.6L
  • Mechanical resistance RMS 7.33N·s/m
  • Surround material Rubber

Dimensions

  • Nominal diameter 12
  • 300mm
  • Overall diameter 325mm
  • Baffle cutout diameter 280mm
  • Mounting depth 142mm
  • Volume occupied by the driver 2.23L
  • Net weight 5.7kg
  • Frame material Steel

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