Beyma 15WRS400

Subwoofer

Nominal diameter15″ / 380 mm
Resonance36 Hz
Q factor0.34
Sensitivity96 dB
Linear excursion± 6.3 mm
Program Power800 W
Ω°0102030405060101001 00010 000-180-120-60060120180Electrical ImpedanceElectrical Phase
mm05101520101001 00010 000Diaphragm ExcursionMaximum Linear Excursion
m/s0246810101001 00010 000Diaphragm Velocity
dB60708090100110120101001 00010 000SPL (1W, 1m, on axis)Maximum SPL
°-180-120-60060120180101001 00010 000Acoustical phase (1m, on axis)
ms051015202530101001 00010 000Group Delay (1m, on axis)
00.51-205101520Step response
-1-0.500.51-2010203040Response to a tone burst of Hz with cycles
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 96dB
  • Frequency response 40 - 4000Hz

Thiele & Small parameters

  • Resonance frequency (free air) fS 36Hz
  • Mechanical quality factor QMS 9.10
  • Electrical quality factor QES 0.35
  • Total quality factor QTS 0.34

Large signal parameters

  • Maximum linear excursion xmax 6.3mm
  • Maximum excursion before damage xlim 30mm
  • Air volume displaced at xmax VD 554cm³
  • Power handling P 400W
  • Program power Pmax 800W

Voice Coil

  • Nominal impedance Z 8Ω
  • DC resistance RE 5.6Ω
  • Inductance (1kHz) LE 1.1mH
  • VC Diameter 76.2mm
  • Winding height HVC 16mm

Magnet

  • Force factor Bl 18.2N/A
  • Motor constant Bl/√RE 7.69N/√W
  • Air gap height HAG 8mm

Diaphragm

  • Effective diameter 335mm
  • Effective area SD 880cm²
  • Moving mass MMS 91g
  • Moving mass (without air load) MMD 73.2g

Suspensions

  • Stiffness KMS 4.65N/mm
  • Compliance CMS 215µm/N
  • Equivalent volume to the compliance VAS 236L
  • Mechanical resistance RMS 2.3N·s/m

Dimensions

  • Nominal diameter 15
  • 380mm
  • Overall diameter 385mm
  • Baffle cutout diameter 353mm
  • Overall depth 165mm
  • Volume occupied by the driver (estimated) 3.4L
  • Net weight 6.2kg
Beyma 15WRS400 SPL & Impedance
Beyma 15WRS400 Dimensions

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