Pioneer TS-D12D4

2x2Ω
2x4Ω

Subwoofer

Nominal diameter12″ / 256 mm
Resonance34 Hz
Q factor0.69
Sensitivity86.3 dB
Linear excursion± 13 mm
Program Power1200 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 86.3dB
  • Frequency response 20 - 4700Hz

Thiele & Small parameters

  • Resonance frequency (free air) fS 34Hz
  • Mechanical quality factor QMS 9.75
  • Electrical quality factor QES 0.74
  • Total quality factor QTS 0.69

Large signal parameters

  • Maximum linear excursion xmax 13mm
  • Air volume displaced at xmax VD 663cm³
  • Power handling P 600W
  • Program power Pmax 1200W
  • Peak power Ppeak 2000W

Voice Coil

  • Nominal impedance Z 2 x 4Ω
  • DC resistance (in series) RE 6.6Ω
  • Inductance (1kHz, in series) LE 4.52mH
  • Winding material Copper
  • Former material Aluminum

Magnet

  • Force factor (in series) Bl 19.2N/A
  • Motor constant Bl/√RE 7.47N/√W
  • Weight 2.087kg
  • Material Ferrite

Diaphragm

  • Effective diameter 255mm
  • Effective area SD 510cm²
  • Moving mass MMS 183g
  • Moving mass (without air load) MMD 176g
  • Material IMPP - Aramid Fiber

Suspensions

  • Stiffness KMS 7.69N/mm
  • Compliance CMS 130µm/N
  • Equivalent volume to the compliance VAS 47.9L
  • Mechanical resistance RMS 3.92N·s/m
  • Surround material Rolled Rubber
  • Spider material Aramid

Dimensions

  • Nominal diameter 12
  • 256mm
  • Overall diameter 256mm
  • Baffle cutout diameter 283mm
  • Mounting depth 156mm
  • Volume occupied by the driver 1.33L

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