MIDRANGE
18M/4631T00
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 @ 2,83V
·
Rigid Titanium Voice Coil Former
T-S Parameters
Resonance frequency [fs]
65 Hz
Mechanical Q factor [Qms]
5.65
Electrical Q factor [Qes]
0.67
Total Q factor [Qts]
0.60
Force factor [Bl]
5.6 Tm
Mechanical resistance [Rms]
1.03 kg/s
Moving mass [Mms]
14.3 g
Compliance [Cms]
0.42 mm/N
Effective diaph. diameter [D]
138 mm
Effective piston area [Sd]
154 cm²
Equivalent volume [Vas]
14.0 l
Sensitivity (2.83V/1m)
92 dB
Ratio Bl/√Re
2.96 N/√W
Ratio fs/Qts
110 Hz
Notes:
IEC specs. refer to IEC 60268-5 third edition.
All Scan-Speak products are RoHS compliant.
Data are subject to change without notice.
Datasheet updated: March 16, 2016.
Electrical Data
Nominal impedance [Zn]
4 Ω
Minimum impedance [Zmin]
3.9 Ω
Maximum impedance [Zo]
29 Ω
DC resistance [Re]
3.5 Ω
Voice coil inductance [Le]
0.16 mH
Power Handling
100h RMS noise test (IEC 17.1)*
120 W
Long-term max power (IEC 17.3)*
250 W
*Filter: 2. order HP Butterworth, 100Hz
Voice Coil & Magnet Data
Voice coil diameter
38 mm
Voice coil height
11 mm
Voice coil layers
2
Height of gap
5 mm
Linear excursion
± 3 mm
Max mech. excursion
± 14.5 mm
Unit weight
1.7 kg
N.C. Madsensvej 1 · 6920 Videbæk · Denmark · Phone: +45 6040 5200 · www.scan-speak.dk
