SB Audience ROSSO-21SW800

Subwoofer

Nominal diameter21″ / 540 mm
Resonance38 Hz
Q factor0.76
Sensitivity93.5 dB
Linear excursion± 11.4 mm
Program Power1600 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 93.5dB
  • Frequency response 38 - 3200Hz

Thiele & Small parameters

  • Resonance frequency (free air) fS 38Hz
  • Mechanical quality factor QMS 14.41
  • Electrical quality factor QES 0.80
  • Total quality factor QTS 0.76

Large signal parameters

  • Maximum linear excursion xmax 11.4mm
  • Maximum excursion before damage xlim 17.5mm
  • Air volume displaced at xmax VD 1898cm³
  • Power handling P 800W
  • Program power Pmax 1600W

Voice Coil

  • Nominal impedance Z 8Ω
  • DC resistance RE 6.4Ω
  • Inductance (1kHz) LE 1.82mH
  • VC Diameter 113mm
  • Winding height HVC 27.5mm
  • Winding material Flat copper clad aluminium
  • Former material FIBSV

Magnet

  • Flux density B 0.95T
  • Force factor Bl 24.1N/A
  • Motor constant Bl/√RE 9.53N/√W
  • Air gap height HAG 14mm
  • Diameter 250mm
  • Material Ferrite

Diaphragm

  • Effective diameter 460mm
  • Effective area SD 1662cm²
  • Moving mass MMS 301g
  • Moving mass (without air load) MMD 254g

Suspensions

  • Stiffness KMS 16.7N/mm
  • Compliance CMS 60µm/N
  • Equivalent volume to the compliance VAS 224L
  • Mechanical resistance RMS 5.03N·s/m
  • Surround material Double half roll with damping glue
  • Spider material Single constant height waves

Dimensions

  • Nominal diameter 21
  • 540mm
  • Overall diameter 540mm
  • Baffle cutout diameter 490mm
  • Overall depth 245mm
  • Flange thickness 15mm
  • Mounting depth 230mm
  • Volume occupied by the driver 11.5L
  • Net weight 16.7kg
  • Frame material Aluminium die cast
SB Audience ROSSO-21SW800 SPL & Impedance
SB Audience ROSSO-21SW800 Dimensions

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