MTX Audio T815-22

2x2Ω
2x4Ω

Subwoofer

Nominal diameter15″ / 380 mm
Resonance32.3 Hz
Q factor0.63
Sensitivity87.4 dB
Linear excursion± 16 mm
Program Power1800 W
Discontinued
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 87.4dB
  • Frequency response 32 - 200Hz

Thiele & Small parameters

  • Resonance frequency (free air) fS 32.3Hz
  • Mechanical quality factor QMS 3.76
  • Electrical quality factor QES 0.76
  • Total quality factor QTS 0.63

Large signal parameters

  • Maximum linear excursion xmax 16mm
  • Air volume displaced at xmax VD 1287cm³
  • Power handling P 600W
  • Program power Pmax 1800W

Voice Coil

  • Nominal impedance Z 2 x 2Ω
  • DC resistance (in series) RE 3.1Ω
  • Inductance (1kHz, in series, estimated) LE 3.28mH

Magnet

  • Force factor (in series) Bl 17.4N/A
  • Motor constant Bl/√RE 9.83N/√W

Diaphragm

  • Effective diameter 320mm
  • Effective area SD 804cm²
  • Moving mass MMS 326g
  • Moving mass (without air load) MMD 310g

Suspensions

  • Stiffness KMS 16.1N/mm
  • Compliance CMS 62µm/N
  • Equivalent volume to the compliance VAS 57L
  • Mechanical resistance RMS 17.6N·s/m

Dimensions

  • Nominal diameter 15
  • 380mm
  • Volume occupied by the driver (estimated) 4.3L


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