RCF MB15H401

8Ω

Mid Bass

Nominal diameter15″ / 381 mm
Resonance44 Hz
Q factor0.30
Sensitivity97.5 dB
Linear excursion± 8 mm
Program Power1400 W
Discontinued
RCF MB15H401 Mid BassRCF MB15H401 Mid BassRCF MB15H401 Mid Bass
Impedance
Excursion
Velocity
SPL
Phase
Group delay
Step response
Tone Burst
Ω°0102030405060101001 00010 000-180-120-60060120180Electrical ImpedanceElectrical Phase
mm05101520101001 00010 000Diaphragm ExcursionMaximum Linear Excursion
m/s00.20.40.60.81101001 00010 000Diaphragm Velocity
dB60708090100110120101001 00010 000SPL (1W, 1m, on axis)Maximum SPL
°-180-120-60060120180101001 00010 000Acoustical phase (1m, on axis)
ms0246810101001 00010 000Group Delay (1m, on axis)
00.51-205101520Step response
-1-0.500.51-2010203040Response to a tone burst of Hz with cycles
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 97.5dB
  • Frequency response 40 - 2000Hz

Thiele & Small parameters

  • Resonance frequency (free air) fS 44Hz
  • Mechanical quality factor QMS 4.80
  • Electrical quality factor QES 0.32
  • Total quality factor QTS 0.30

Large signal parameters

  • Maximum linear excursion xmax 8mm
  • Maximum excursion before damage xlim 25mm
  • Air volume displaced at xmax VD 720cm³
  • Power handling P 700W
  • Program power Pmax 1400W

Voice Coil

  • Nominal impedance Z 8Ω
  • DC resistance RE 5.4Ω
  • Inductance (1kHz) LE 0.7mH
  • VC Diameter 102mm
  • Winding height HVC 21mm
  • Winding material Aluminium

Magnet

  • Force factor Bl 22.1N/A
  • Motor constant Bl/√RE 9.51N/√W
  • Material Ceramic

Diaphragm

  • Effective diameter 340mm
  • Effective area SD 900cm²
  • Moving mass MMS 107g
  • Moving mass (without air load) MMD 88.4g

Suspensions

  • Stiffness KMS 9.52N/mm
  • Compliance CMS 105µm/N
  • Equivalent volume to the compliance VAS 121L
  • Mechanical resistance RMS 6.16N·s/m
  • Surround material Polycotton

Dimensions

  • Nominal diameter 15″
  • 381mm
  • Overall diameter 393mm
  • Baffle cutout diameter 360mm
  • Overall depth 164mm
  • Flange thickness 12mm
  • Mounting depth 152mm
  • Volume occupied by the driver 4.3L
  • Net weight 12.0kg
Impedance
SPL
RCF MB15H401 Impedance
RCF MB15H401 SPL
RCF MB15H401 Dimensions
PDF fileDatasheet

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