ATOHM LD180CR04

Mid Bass

8″ / 180 mm
Nominal diameter
46 Hz
Resonance
0.32
Q factor
90 dB
Sensitivity
± 7.5 mm
Linear excursion
300 W
Program Power
ATOHM LD180CR04 Mid Bass
Impedance
Excursion
Velocity
SPL
Phase
Group delay
Step response
Tone Burst
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
89.5
dB

Thiele & Small parameters

Resonance frequency (free air)
fS
46.0
Hz
Mechanical quality factor
QMS
3.94
Electrical quality factor
QES
0.35
Total quality factor
QTS
0.32

Large signal parameters

Maximum linear excursion
xmax
7.5
mm
Maximum excursion before damage
xlim
11.0
mm
Air volume displaced at xmax
VD
120
cm³
Power handling
P
150
W
Program power
Pmax
300
W

Voice Coil

Nominal impedance
Z
4
Ω
DC resistance
RE
3.6
Ω
Inductance (1kHz)
LE
0.58
mH
VC Diameter
35
mm
Winding height
HVC
18
mm

Magnet

Flux density
B
1.12
T
Force factor
Bl
7.2
N/A
Motor constant
Bl/√RE
3.79
N/√W
Air gap height
HAG
6
mm

Diaphragm

Effective diameter
143
mm
Effective area
SD
160
cm²
Moving mass
MMS
18.2
g
Moving mass (without air load)
MMD
16.7
g

Suspensions

Stiffness
KMS
1.52
N/mm
Compliance
CMS
660
µm/N
Equivalent volume to the compliance
VAS
24.3
L
Mechanical resistance
RMS
1.34
N·s/m

Dimensions

Nominal diameter
8
″
180
mm
Volume occupied by the driver (estimated)
0.62
L
Impedance
SPL
ATOHM LD180CR04 Impedance
ATOHM LD180CR04 SPL
ATOHM LD180CR04 Dimensions
DatasheetDatasheet

Export this driver to a simulation software:

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