Kartesian Lom120_vPA

Mid Bass

4.5″ / 120 mm
Nominal diameter
120 Hz
Resonance
0.39
Q factor
89 dB
Sensitivity
± 2.5 mm
Linear excursion
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
88.7
dB
Frequency response
100 - 3000
Hz

Thiele & Small parameters

Resonance frequency (free air)
fS
120
Hz
Mechanical quality factor
QMS
7.12
Electrical quality factor
QES
0.41
Total quality factor
QTS
0.39

Large signal parameters

Maximum linear excursion
xmax
2.5
mm
Air volume displaced at xmax
VD
14
cm³

Voice Coil

Nominal impedance
Z
8
Ω
DC resistance
RE
6.3
Ω
Inductance (1kHz)
LE
0.39
mH

Magnet

Force factor
Bl
8.7
N/A
Motor constant
Bl/√RE
3.47
N/√W
Diameter
55
mm
Height
27
mm

Diaphragm

Effective diameter
84
mm
Effective area
SD
55
cm²
Moving mass
MMS
6.5
g
Moving mass (without air load)
MMD
6.2
g

Suspensions

Stiffness
KMS
3.7
N/mm
Compliance
CMS
270
µm/N
Equivalent volume to the compliance
VAS
1.17
L
Mechanical resistance
RMS
0.69
N·s/m

Dimensions

Nominal diameter
4.5
120
mm
Overall size
106 x 106
mm
Baffle cutout diameter
100
mm
Overall depth
68
mm
Flange thickness
5
mm
Mounting depth
63
mm
Volume occupied by the driver (estimated)
0.21
L
Kartesian Lom120_vPA SPL & Impedance
Kartesian Lom120_vPA Distortion
Kartesian Lom120_vPA Force factor
Kartesian Lom120_vPA Inductance
Kartesian Lom120_vPA Step response
Kartesian Lom120_vPA Stiffness
Kartesian Lom120_vPA Dimensions

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