DS18 SELECT SLC12S

4Ω

Subwoofer

Nominal diameter12″ / 316 mm
Resonance41 Hz
Q factor0.90
Sensitivity87.6 dB
Linear excursion± 17 mm
Program power500 W
DS18 SLC12S SubwooferDS18 SLC12S SubwooferDS18 SLC12S Subwoofer
Excursion
Velocity
SPL
Phase
Group delay
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 87.6dB
  • Frequency response 25 - 4200Hz

Thiele & Small parameters

  • Resonance frequency (free air) fS 41Hz
  • Mechanical quality factor QMS 4.61
  • Electrical quality factor QES 1.12
  • Total quality factor QTS 0.90

Large signal parameters

  • Maximum linear excursion (one way) xmax 17mm
  • Air volume displaced at xmax VD 903cm³
  • Power handling P 250W
  • Program power Pmax 500W

Voice Coil

  • Nominal impedance Z 4Ω
  • DC resistance RE 4.1Ω
  • Inductance (1kHz) LE 1.02mH
  • VC Diameter 50.8mm
  • Winding material Copper Clad Aluminium
  • Former material Aluminum

Magnet

  • Force factor Bl 12.9N/A
  • Motor constant Bl/√RE 6.39N/√W
  • Diameter 151mm
  • Weight 1.276kg
  • Material Ferrite

Diaphragm

  • Effective diameter 260mm
  • Effective area SD 531cm²
  • Moving mass (including air load) MMS 175g
  • Moving mass MMD 166g
  • Material Paper

Suspensions

  • Stiffness KMS 20.4N/mm
  • Compliance CMS 49µm/N
  • Equivalent volume to the compliance VAS 32.8L
  • Mechanical resistance RMS 9.78N·s/m
  • Surround material Foam

Dimensions

  • Nominal diameter 12″
  • 316mm
  • Overall diameter 316mm
  • Baffle cutout diameter 277mm
  • Overall depth 163mm
  • Flange thickness 24mm
  • Mounting depth 139mm
  • Volume occupied by the driver (estimated) 2.9L
  • Frame material Steel
Impedance
Step response
Tone Burst
DS18 SLC12S Dimensions
PDF fileDatasheet

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