VOLT SB220.1

Subwoofer

Nominal diameter8″ / 220 mm
Resonance39 Hz
Q factor0.53
Sensitivity86.2 dB
Linear excursion± 14 mm
Program Power300 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
  • Frequency response 25 - 1000Hz

Thiele & Small parameters

  • Resonance frequency (free air) fS 39Hz
  • Mechanical quality factor QMS 3.95
  • Electrical quality factor QES 0.61
  • Total quality factor QTS 0.53

Large signal parameters

  • Maximum linear excursion xmax 14mm
  • Maximum excursion before damage xlim 15mm
  • Air volume displaced at xmax VD 318cm³
  • Power handling P 150W
  • Program power Pmax 300W

Voice Coil

  • Nominal impedance Z 8Ω
  • DC resistance RE 5.1Ω
  • Inductance (1kHz) LE 1.6mH
  • VC Diameter 38mm
  • Winding material Copper

Magnet

  • Force factor Bl 9.5N/A
  • Motor constant Bl/√RE 4.21N/√W
  • Weight 3.6kg

Diaphragm

  • Effective diameter 170mm
  • Effective area SD 227cm²
  • Moving mass MMS 44g
  • Moving mass (without air load) MMD 41.3g

Suspensions

  • Stiffness KMS 2.63N/mm
  • Compliance CMS 380µm/N
  • Equivalent volume to the compliance VAS 27L
  • Mechanical resistance RMS 2.73N·s/m

Dimensions

  • Nominal diameter 8
  • 220mm
  • Overall diameter 235mm
  • Baffle cutout diameter 200mm
  • Overall depth 118mm
  • Flange thickness 9mm
  • Mounting depth 109mm
  • Volume occupied by the driver 0.8L
  • Net weight 4.1kg
  • Frame material Diecast Aluminium
VOLT SB220.1 SPL & Impedance
VOLT SB220.1 Dimensions

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