RCF L18P400

Subwoofer

Nominal diameter18″ / 457 mm
Resonance29 Hz
Q factor0.28
Sensitivity95.1 dB
Linear excursion± 9 mm
Program Power2000 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
  • Sensitivity (1W, 1m, infinite baffle) SPL1W 95.1dB
  • Frequency response 25 - 1000Hz

Thiele & Small parameters

  • Resonance frequency (free air) fS 29Hz
  • Mechanical quality factor QMS 7.60
  • Electrical quality factor QES 0.29
  • Total quality factor QTS 0.28

Large signal parameters

  • Maximum linear excursion xmax 9mm
  • Maximum excursion before damage xlim 25mm
  • Air volume displaced at xmax VD 1080cm³
  • Power handling P 1000W
  • Program power Pmax 2000W

Voice Coil

  • Nominal impedance Z 8Ω
  • DC resistance RE 5.1Ω
  • Inductance (1kHz) LE 1.2mH
  • VC Diameter 102mm
  • Winding height HVC 25mm
  • Winding material Copper
  • Former material Glass Fiber

Magnet

  • Force factor Bl 24.6N/A
  • Motor constant Bl/√RE 10.9N/√W
  • Air gap height HAG 15mm

Diaphragm

  • Effective diameter 395mm
  • Effective area SD 1200cm²
  • Moving mass MMS 200g
  • Moving mass (without air load) MMD 171g

Suspensions

  • Stiffness KMS 6.29N/mm
  • Compliance CMS 159µm/N
  • Equivalent volume to the compliance VAS 340L
  • Mechanical resistance RMS 4.8N·s/m
  • Spider material with silicon damping

Dimensions

  • Nominal diameter 18
  • 457mm
  • Overall diameter 465mm
  • Baffle cutout diameter 425mm
  • Overall depth 206mm
  • Volume occupied by the driver 6L
  • Net weight 13.5kg
RCF L18P400 Impedance
RCF L18P400 SPL
RCF L18P400 Dimensions

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