Beyma 18LEX1000Nd

Nd
Fe

Subwoofer

Nominal diameter18″ / 460 mm
Resonance34 Hz
Q factor0.39
Sensitivity95 dB
Linear excursion± 11 mm
Program Power2000 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 95dB
  • Frequency response 35 - 1000Hz

Thiele & Small parameters

  • Resonance frequency (free air) fS 34Hz
  • Mechanical quality factor QMS 5.60
  • Electrical quality factor QES 0.42
  • Total quality factor QTS 0.39

Large signal parameters

  • Maximum linear excursion xmax 11mm
  • Maximum excursion before damage xlim 60mm
  • Air volume displaced at xmax VD 1381cm³
  • Power handling P 1000W
  • Program power Pmax 2000W

Voice Coil

  • Nominal impedance Z 8Ω
  • DC resistance RE 5.1Ω
  • Inductance (1kHz) LE 1.6mH
  • VC Diameter 88.9mm
  • Winding height HVC 27mm

Magnet

  • Force factor Bl 22N/A
  • Motor constant Bl/√RE 9.74N/√W
  • Air gap height HAG 12mm

Diaphragm

  • Effective diameter 400mm
  • Effective area SD 1255cm²
  • Moving mass MMS 185g
  • Moving mass (without air load) MMD 155g

Suspensions

  • Stiffness KMS 8.55N/mm
  • Compliance CMS 117µm/N
  • Equivalent volume to the compliance VAS 260L
  • Mechanical resistance RMS 7.1N·s/m

Dimensions

  • Nominal diameter 18
  • 460mm
  • Overall diameter 462mm
  • Baffle cutout diameter 426mm
  • Overall depth 233mm
  • Volume occupied by the driver (estimated) 5.3L
  • Net weight 7.3kg
Beyma 18LEX1000Nd SPL & Impedance
Beyma 18LEX1000Nd Dimensions

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