Scan-Speak Revelator 18W/4531G01

Mid Bass

8″ / 180 mm
Nominal diameter
34 Hz
Resonance
0.35
Q factor
88 dB
Sensitivity
± 6.5 mm
Linear excursion
110 W
Program Power
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
88.2
dB
Frequency response
34 - 7000
Hz

Thiele & Small parameters

Resonance frequency (free air)
fS
34.0
Hz
Mechanical quality factor
QMS
4.90
Electrical quality factor
QES
0.38
Total quality factor
QTS
0.35

Large signal parameters

Maximum linear excursion
xmax
6.5
mm
Maximum excursion before damage
xlim
11.0
mm
Air volume displaced at xmax
VD
102
cm³
Power handling
P
70
W
Program power
Pmax
110
W

Voice Coil

Nominal impedance
Z
4
Ω
DC resistance
RE
3.5
Ω
Inductance (1kHz, estimated)
LE
0.27
mH
VC Diameter
38
mm
Winding height
HVC
18
mm

Magnet

Force factor
Bl
5.7
N/A
Motor constant
Bl/√RE
3.05
N/√W
Air gap height
HAG
5
mm
Material
Ferrite

Diaphragm

Effective diameter
142
mm
Effective area
SD
157
cm²
Moving mass
MMS
16.9
g
Moving mass (without air load)
MMD
15.4
g
Material
Wood Fibre

Suspensions

Stiffness
KMS
0.77
N/mm
Compliance
CMS
1300
µm/N
Equivalent volume to the compliance
VAS
45.6
L
Mechanical resistance
RMS
0.74
N·s/m
Surround material
SBR Rubber

Dimensions

Nominal diameter
8
180
mm
Volume occupied by the driver
0.47
L
Net weight
1.7
kg
Scan-Speak 18W/4531G01 SPL & Impedance
Scan-Speak 18W/4531G01 Dimensions

Export this driver to a simulation software:

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fS
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SD
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QTS
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xmax
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Bl/√RE
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Pmax
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