Scan Speak 18 M 4631 T00 - Revelator midrange

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RRP 249,00 €

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18M/4631T00 midrange

The Revelator midranges are well known for their sliced paper cone technology. The slices are filled with damping glue which dramatically reduces break -up modes in the diaphragm. In combination with Scan Speaks low-loss linear suspension and the patented Symmetrical Drive (SD-1) it represents a breakthrough in midrange clarity and overall smooth frequency response characteristics.

Key features:
  • Patented Symmetrical Drive motor design
  • Low-Loss Linear Suspension
  • Coated Foam Surround
  • Sliced Cone (Control Cone Breakups)
  • High Sensitivity 92dB @ 3,83V
  • Rigid Titanium Voice Coil Former

Short data

Usage as Bass-Midrange
Power Handling 70 Watt
Impedance 4 Ohm
Frequency from 100 Hz
Max. Frequency 7 kHz
Sound pressure 92 dB


Overall dimensions 182 mm
Baffle cutout 156 mm
Depth (Total) 84.9 mm
Frame Material Aluminium diecast
Membrane Material Paper
Voice coil Ø 38 mm
Voice coil height 11 mm
Air gap height 5 mm
Magnet Ø 110 mm


Resonance fs fs: 110 Hz
Mechanical Q Qms: 5.65
Electrical Q Qes: 0.67
Total Q Qts: 0.60
Equivalent Air-Volumen Vas: 14 Liter
DC-Resistance Re: 3.5 Ohm
Coil Inductance Le: 0.16 mH
Mech. Compliance Cms: 0.42 mm/N
Moving Mass Mms: 14.3 g
mech. Resistance Rms: 1.03 kg/s-¹
Max. Excursion +/- Xmax: 3 mm
BL Product Bl: 5.6 N/A
Membrane Area Sd: 154 cm²
Sound pressure dB: 92 SPL

Frequency & Impedance

Technical Dimensions

PDF-Product information

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