Goldwood GW-1244

Woofer

Nominal diameter12″ / 305 mm
Resonance29.7 Hz
Q factor0.68
Sensitivity87.2 dB
Linear excursion± 3 mm
Program Power290 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 87.2dB
  • Frequency response 18 - 4500Hz

Thiele & Small parameters

  • Resonance frequency (free air) fS 29.7Hz
  • Mechanical quality factor QMS 3.30
  • Electrical quality factor QES 0.86
  • Total quality factor QTS 0.68

Large signal parameters

  • Maximum linear excursion xmax 3mm
  • Air volume displaced at xmax VD 158cm³
  • Power handling P 150W
  • Program power Pmax 290W

Voice Coil

  • Nominal impedance Z 4Ω
  • DC resistance RE 3.6Ω
  • Inductance (1kHz) LE 0.6mH
  • VC Diameter 50.8mm
  • Winding material Aluminum

Magnet

  • Force factor Bl 8.48N/A
  • Motor constant Bl/√RE 4.47N/√W
  • Weight 1.134kg

Diaphragm

  • Effective diameter 259mm
  • Effective area SD 526cm²
  • Moving mass MMS 93.2g
  • Moving mass (without air load) MMD 84.8g
  • Material Poly-Mica

Suspensions

  • Stiffness KMS 3.25N/mm
  • Compliance CMS 308µm/N
  • Equivalent volume to the compliance VAS 120L
  • Mechanical resistance RMS 5.27N·s/m
  • Surround material Butyl Rubber

Dimensions

  • Nominal diameter 12
  • 305mm
  • Overall diameter 305mm
  • Baffle cutout diameter 286mm
  • Mounting depth 123mm
  • Volume occupied by the driver (estimated) 0.91L
  • Net weight 2.189kg
  • Frame material Stamped Steel
Goldwood GW-1244 SPL & Impedance


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Peerless XXLS-P830845 Subwoofer

Peerless XXLS-P830845

8 Ω
12 Subwoofer
fS29 Hz
SD491 cm²
20 - 1000 Hz
QTS0.65
xmax15.2 mm
SPL1W86.6 dB
Bl/√RE5.48
Pmax350 W