RCF L15-554K

Mid Bass

Nominal diameter15″ / 381 mm
Resonance35 Hz
Q factor0.24
Sensitivity97 dB
Linear excursion± 6 mm
Program Power1200 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 97dB
  • Frequency response 40 - 2000Hz

Thiele & Small parameters

  • Resonance frequency (free air) fS 35Hz
  • Mechanical quality factor QMS 8.60
  • Electrical quality factor QES 0.25
  • Total quality factor QTS 0.24

Large signal parameters

  • Maximum linear excursion xmax 6mm
  • Maximum excursion before damage xlim 22mm
  • Air volume displaced at xmax VD 480cm³
  • Power handling P 600W
  • Program power Pmax 1200W

Voice Coil

  • Nominal impedance Z 8Ω
  • DC resistance RE 6.6Ω
  • Inductance (1kHz) LE 1mH
  • VC Diameter 102mm
  • Winding height HVC 16mm
  • Winding material Copper

Magnet

  • Force factor Bl 23N/A
  • Motor constant Bl/√RE 8.95N/√W
  • Material Ceramic

Diaphragm

  • Effective diameter 325mm
  • Effective area SD 800cm²
  • Moving mass MMS 91g
  • Moving mass (without air load) MMD 74.8g

Suspensions

  • Stiffness KMS 4N/mm
  • Compliance CMS 250µm/N
  • Equivalent volume to the compliance VAS 227L
  • Mechanical resistance RMS 2.33N·s/m
  • Surround material Polycotton

Dimensions

  • Nominal diameter 15
  • 381mm
  • Overall diameter 387mm
  • Baffle cutout diameter 362mm
  • Overall depth 133mm
  • Flange thickness 9mm
  • Mounting depth 124mm
  • Volume occupied by the driver 3.8L
  • Net weight 11.0kg
RCF L15-554K Impedance
RCF L15-554K SPL
RCF L15-554K Dimensions

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