Scan-Speak Illuminator 12MU/4731T00

Mid-range

4.5″ / 120 mm
Nominal diameter
64 Hz
Resonance
0.24
Q factor
89 dB
Sensitivity
± 3.5 mm
Linear excursion
150 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
89.0
dB
Frequency response
100 - 10000
Hz

Thiele & Small parameters

Resonance frequency (free air)
fS
64.0
Hz
Mechanical quality factor
QMS
3.64
Electrical quality factor
QES
0.26
Total quality factor
QTS
0.24

Large signal parameters

Maximum linear excursion
xmax
3.5
mm
Maximum excursion before damage
xlim
10.0
mm
Air volume displaced at xmax
VD
20
cm³
Power handling
P
80
W
Program power
Pmax
150
W

Voice Coil

Nominal impedance
Z
4
Ω
DC resistance
RE
3.1
Ω
Inductance (1kHz, estimated)
LE
0.12
mH
VC Diameter
32
mm
Winding height
HVC
6
mm

Magnet

Force factor
Bl
5.1
N/A
Motor constant
Bl/√RE
2.9
N/√W
Air gap height
HAG
13
mm
Material
Neodymium

Diaphragm

Effective diameter
86
mm
Effective area
SD
58
cm²
Moving mass
MMS
5.4
g
Moving mass (without air load)
MMD
5.1
g

Suspensions

Stiffness
KMS
0.87
N/mm
Compliance
CMS
1150
µm/N
Equivalent volume to the compliance
VAS
5.4
L
Mechanical resistance
RMS
0.6
N·s/m

Dimensions

Nominal diameter
4.5
120
mm
Volume occupied by the driver
0.14
L
Net weight
0.8
kg
Scan-Speak 12MU/4731T00 SPL & Impedance
Scan-Speak 12MU/4731T00 Dimensions

Export this driver to a simulation software:

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