5.25″ / 13 mm
Nominal diameter
51 Hz
Resonance
0.45
Q factor
86 dB
Sensitivity
± 3.5 mm
Linear excursion
180 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
86.4
dB
Frequency response
51 - 3500
Hz
Thiele & Small parameters
Resonance frequency (free air)
fS
51.0
Hz
Mechanical quality factor
QMS
3.60
Electrical quality factor
QES
0.52
Total quality factor
QTS
0.45
Large signal parameters
Maximum linear excursion
xmax
3.5
mm
Air volume displaced at xmax
VD
29
cm³
Power handling
P
70
W
Program power
Pmax
180
W
Voice Coil
Nominal impedance
Z
8
Ω
DC resistance
RE
6.3
Ω
Inductance (1kHz)
LE
0.5
mH
VC Diameter
25
mm
Winding height
HVC
13
mm
Magnet
Force factor
Bl
5.5
N/A
Motor constant
Bl/√RE
2.19
N/√W
Diaphragm
Effective diameter
102
mm
Effective area
SD
82
cm²
Moving mass
MMS
7.9
g
Moving mass (without air load)
MMD
7.3
g
Suspensions
Stiffness
KMS
0.82
N/mm
Compliance
CMS
1216
µm/N
Equivalent volume to the compliance
VAS
11.6
L
Mechanical resistance
RMS
0.7
N·s/m
Dimensions
Nominal diameter
5.25
″
13
mm
Overall diameter
145
mm
Baffle cutout diameter
110
mm
Overall depth
67
mm
Flange thickness
4
mm
Mounting depth
63
mm
Volume occupied by the driver (estimated)
0.31
L
Similar speaker drivers to mivoc WPT 138
5″Mid Bass
fS
52 Hz
SD
74 cm²
52 - 12000 Hz
QTS
0.47
xmax
2.3 mm
SPL1W
86 dB
Bl/√RE
1.88
Pmax
80 W
6.5″Mid Bass
fS
49 Hz
SD
125 cm²
70 - 4500 Hz
QTS
0.43
xmax
5.0 mm
SPL1W
87 dB
Bl/√RE
3.03
Pmax
100 W
6″Woofer
fS
49 Hz
SD
75 cm²
50 - 4000 Hz
QTS
0.45
xmax
5.0 mm
SPL1W
87 dB
Bl/√RE
1.93
Pmax
250 W