4″ / 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
Sensitivity (1w, 1m, infinite baffle)
SPL1W
89.1
dB
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)
LE
0.11
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
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
″
120
mm
Volume occupied by the driver (estimated)
0.31
L
Net weight
0.8
kg
Similar speaker drivers to Scan-Speak 12MU/4731T00
4″Coaxial
fS
65 Hz
SD
57 cm²
65 - 20000 Hz
QTS
0.26
xmax
4.5 mm
SPL1W
89 dB
Bl/√RE
2.56
Pmax
50 W
5″Coaxial
fS
61 Hz
SD
95 cm²
60 - 18000 Hz
QTS
0.25
xmax
3.0 mm
SPL1W
90 dB
Bl/√RE
4.44
Pmax
200 W
5.25″Mid-range
fS
73 Hz
SD
83 cm²
73 - 5500 Hz
QTS
0.28
xmax
1.5 mm
SPL1W
90 dB
Bl/√RE
3.17
Pmax
60 W