RIOT15 D4

2x2Ω
2x4Ω

Subwoofer

Nominal diameter15″ / 380 mm
Resonance30 Hz
Q factor0.76
Sensitivity86.6 dB
Linear excursion± 18 mm
Program Power3000 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 86.6dB
  • Frequency response 10 - 500Hz

Thiele & Small parameters

  • Resonance frequency (free air) fS 30Hz
  • Mechanical quality factor QMS 7.09
  • Electrical quality factor QES 0.86
  • Total quality factor QTS 0.76

Large signal parameters

  • Maximum linear excursion (one way) xmax 18mm
  • Air volume displaced at xmax VD 1512cm³
  • Power handling P 1000W
  • Program power Pmax 3000W
  • Peak power Ppeak 3000W

Voice Coil

  • Nominal impedance Z 2 x 4Ω
  • DC resistance (in series) RE 6.4Ω
  • Inductance (1kHz, in series) LE 3.48mH
  • VC Diameter 76.2mm
  • Winding material Copper

Magnet

  • Force factor (in series) Bl 22.2N/A
  • Motor constant Bl/√RE 8.78N/√W
  • Material Ferrite

Diaphragm

  • Effective diameter 327mm
  • Effective area SD 840cm²
  • Moving mass MMS 353g
  • Moving mass (without air load) MMD 336g
  • Material RNPP

Suspensions

  • Stiffness KMS 14.3N/mm
  • Compliance CMS 70µm/N
  • Equivalent volume to the compliance VAS 61.3L
  • Mechanical resistance RMS 9.4N·s/m
  • Surround material Tall U Shaped Foam

Dimensions

  • Nominal diameter 15
  • 380mm
  • Overall diameter 390mm
  • Baffle cutout diameter 350mm
  • Overall depth 223mm
  • Flange thickness 17mm
  • Mounting depth 206mm
  • Volume occupied by the driver 7.36L
  • Net weight 13.5kg

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