Ground Zero URANIUM GZUW 10SQ-D2

2x2Ω

Subwoofer

Nominal diameter10″ / 250 mm
Resonance40.2 Hz
Q factor0.54
Sensitivity86.2 dB
Linear excursion± 10 mm
Program Power900 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 86.2dB

Thiele & Small parameters

  • Resonance frequency (free air) fS 40.2Hz
  • Mechanical quality factor QMS 13.60
  • Electrical quality factor QES 0.56
  • Total quality factor QTS 0.54

Large signal parameters

  • Maximum linear excursion (one way) xmax 10mm
  • Air volume displaced at xmax VD 345cm³
  • Power handling P 450W
  • Program power Pmax 900W

Voice Coil

  • Nominal impedance Z 2 x 2Ω
  • DC resistance (in series) RE 4.0Ω
  • Inductance (1kHz, in series) LE 1.95mH
  • VC Diameter 50mm
  • Winding material Copper

Magnet

  • Force factor (in series) Bl 14.8N/A
  • Motor constant Bl/√RE 7.41N/√W

Diaphragm

  • Effective diameter 210mm
  • Effective area SD 345cm²
  • Moving mass MMS 122g
  • Moving mass (without air load) MMD 118g
  • Material Paper

Suspensions

  • Stiffness KMS 7.75N/mm
  • Compliance CMS 129µm/N
  • Equivalent volume to the compliance VAS 21.8L
  • Mechanical resistance RMS 2.27N·s/m
  • Spider material Polycot

Dimensions

  • Nominal diameter 10
  • 250mm
  • Overall diameter 262mm
  • Baffle cutout diameter 236mm
  • Mounting depth 148mm
  • Volume occupied by the driver (estimated) 1.6L
  • Frame material Aluminium cast

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