Scan-Speak Revelator 12M/4631G00

4Ω

Mid-range

Nominal diameter4.5″ / 120 mm
Resonance75 Hz
Q factor0.33
Sensitivity86.4 dB
Linear excursion± 3 mm
Program Power70 W
Scan-Speak 12M/4631G00 Mid-rangeScan-Speak 12M/4631G00 Mid-rangeScan-Speak 12M/4631G00 Mid-range
Impedance
Excursion
Velocity
SPL
Phase
Group delay
Step response
Tone Burst
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 86.4dB
  • Frequency response 85 - 10000Hz

Thiele & Small parameters

  • Resonance frequency (free air) fS 75Hz
  • Mechanical quality factor QMS 5.57
  • Electrical quality factor QES 0.35
  • Total quality factor QTS 0.33

Large signal parameters

  • Maximum linear excursion xmax 3mm
  • Maximum excursion before damage xlim 7mm
  • Air volume displaced at xmax VD 15cm³
  • Power handling P 40W
  • Program power Pmax 70W

Voice Coil

  • Nominal impedance Z 4Ω
  • DC resistance RE 3.2Ω
  • Inductance (1kHz, estimated) LE 0.25mH
  • VC Diameter 38mm
  • Winding height HVC 10mm

Magnet

  • Force factor Bl 5.3N/A
  • Motor constant Bl/√RE 2.96N/√W
  • Air gap height HAG 4mm
  • Material Neodymium

Diaphragm

  • Effective diameter 79mm
  • Effective area SD 49cm²
  • Moving mass MMS 6.5g
  • Moving mass (without air load) MMD 6.2g
  • Material Sliced

Suspensions

  • Stiffness KMS 1.45N/mm
  • Compliance CMS 690µm/N
  • Equivalent volume to the compliance VAS 2.3L
  • Mechanical resistance RMS 0.55N·s/m

Dimensions

  • Nominal diameter 4.5″
  • 120mm
  • Volume occupied by the driver 0.14L
  • Net weight 0.6kg
SPL & Impedance
Scan-Speak 12M/4631G00 SPL & Impedance
Scan-Speak 12M/4631G00 Dimensions
PDF fileDatasheet

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