Eighteen Sound 10NTLW2500 8Ω

Subwoofer

Nominal diameter10″ / 260 mm
Resonance65 Hz
Q factor0.33
Sensitivity94.1 dB
Linear excursion± 7.6 mm
Program power1000 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 94.1dB
  • Frequency response 55 - 4500Hz

Thiele & Small parameters

  • Resonance frequency (free air) fS 65Hz
  • Mechanical quality factor QMS 11.20
  • Electrical quality factor QES 0.34
  • Total quality factor QTS 0.33

Large signal parameters

  • Maximum linear excursion (one way) xmax 7.6mm
  • Air volume displaced at xmax VD 263cm³
  • Power handling P 500W
  • Program power Pmax 1000W

Voice Coil

  • Nominal impedance Z 8Ω
  • DC resistance RE 5.0Ω
  • Inductance (1kHz) LE 0.45mH
  • VC Diameter 64mm
  • Winding height HVC 19.7mm

Magnet

  • Force factor Bl 17.4N/A
  • Motor constant Bl/√RE 7.78N/√W
  • Air gap height HAG 9mm
  • Material Neodymium

Diaphragm

  • Effective diameter 210mm
  • Effective area SD 346cm²
  • Moving mass (including air load) MMS 49g
  • Moving mass MMD 44.3g

Suspensions

  • Stiffness KMS 8.4N/mm
  • Compliance CMS 119µm/N
  • Equivalent volume to the compliance VAS 21L
  • Mechanical resistance RMS 1.79N·s/m

Dimensions

  • Nominal diameter 10
  • 260mm
  • Overall diameter 260mm
  • Baffle cutout diameter 233mm
  • Overall depth 157mm
  • Flange thickness 9mm
  • Mounting depth 148mm
  • Volume occupied by the driver (estimated) 1.6L
  • Net weight 3.1kg
Eighteen Sound 10NTLW2500 8Ω Impedance
Eighteen Sound 10NTLW2500 8Ω SPL
Eighteen Sound 10NTLW2500 8Ω Dimensions

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