Hertz Cento CS 300 S2

Subwoofer

Nominal diameter12″ / 300 mm
Resonance25 Hz
Q factor0.46
Sensitivity86.5 dB
Linear excursion± 12.5 mm
Program Power700 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 86.5dB

Thiele & Small parameters

  • Resonance frequency (free air) fS 25Hz
  • Mechanical quality factor QMS 7.20
  • Electrical quality factor QES 0.49
  • Total quality factor QTS 0.46

Large signal parameters

  • Maximum linear excursion xmax 12.5mm
  • Maximum excursion before damage xlim 16.5mm
  • Air volume displaced at xmax VD 693cm³
  • Power handling P 350W
  • Program power Pmax 700W

Voice Coil

  • Nominal impedance Z 2Ω
  • DC resistance RE 2.2Ω
  • Inductance (1kHz) LE 2.8mH
  • VC Diameter 35mm

Magnet

  • Force factor Bl 12N/A
  • Motor constant Bl/√RE 8.09N/√W
  • Diameter 134mm
  • Height 34mm
  • Material Ferrite

Diaphragm

  • Effective diameter 267mm
  • Effective area SD 555cm²
  • Moving mass MMS 205g
  • Moving mass (without air load) MMD 196g
  • Material Polyproyilene

Suspensions

  • Stiffness KMS 5N/mm
  • Compliance CMS 200µm/N
  • Equivalent volume to the compliance VAS 87.3L
  • Mechanical resistance RMS 4.47N·s/m

Dimensions

  • Nominal diameter 12
  • 300mm
  • Overall diameter 318mm
  • Baffle cutout diameter 281mm
  • Overall depth 147mm
  • Flange thickness 17mm
  • Mounting depth 130mm
  • Volume occupied by the driver (estimated) 2.4L
  • Net weight 4.844kg
Hertz CS 300 S2 Impedance


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