SB Audience ROSSO-8CX250

Coaxial

Nominal diameter8″ / 208 mm
Resonance70 Hz
Q factor0.32
Sensitivity92.9 dB
Linear excursion± 5.4 mm
Program Power500 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 92.9dB
  • Frequency response 70 - 19400Hz

Thiele & Small parameters

  • Resonance frequency (free air) fS 70Hz
  • Mechanical quality factor QMS 2.19
  • Electrical quality factor QES 0.37
  • Total quality factor QTS 0.32

Large signal parameters

  • Maximum linear excursion xmax 5.4mm
  • Maximum excursion before damage xlim 12mm
  • Air volume displaced at xmax VD 114cm³
  • Power handling P 250W
  • Program power Pmax 500W

Voice Coil

  • Nominal impedance Z 8Ω
  • DC resistance RE 5.3Ω
  • Inductance (1kHz) LE 0.72mH
  • VC Diameter 49.5mm
  • Winding height HVC 13.4mm
  • Winding material EISVCAW
  • Former material Till

Magnet

  • Flux density B 0.88T
  • Force factor Bl 11.4N/A
  • Motor constant Bl/√RE 4.95N/√W
  • Air gap height HAG 8mm
  • Material Ferrite

Diaphragm

  • Effective diameter 164mm
  • Effective area SD 211cm²
  • Moving mass MMS 20.8g
  • Moving mass (without air load) MMD 18.5g
  • Material Paper (sisal and manila fibers)

Suspensions

  • Stiffness KMS 4N/mm
  • Compliance CMS 250µm/N
  • Equivalent volume to the compliance VAS 15.8L
  • Mechanical resistance RMS 4.17N·s/m
  • Surround material Cloth triple roll
  • Spider material Single constant height waves

Dimensions

  • Nominal diameter 8
  • 208mm
  • Overall diameter 208mm
  • Baffle cutout diameter 179mm
  • Overall depth 126mm
  • Flange thickness 7mm
  • Mounting depth 119mm
  • Volume occupied by the driver 2L
  • Net weight 4.32kg
  • Frame material Aluminium die cast
SB Audience ROSSO-8CX250 SPL & Impedance
SB Audience ROSSO-8CX250 Dimensions

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