SEAS H1794-08 FEA18RCZ

Full-range

8″ / 180 mm
Nominal diameter
42 Hz
Resonance
0.39
Q factor
89 dB
Sensitivity
± 3 mm
Linear excursion
110 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
88.9
dB
Frequency response
45 - 20000
Hz

Thiele & Small parameters

Resonance frequency (free air)
fS
42.0
Hz
Mechanical quality factor
QMS
6.29
Electrical quality factor
QES
0.42
Total quality factor
QTS
0.39

Large signal parameters

Maximum linear excursion
xmax
3.0
mm
Maximum excursion before damage
xlim
7.0
mm
Air volume displaced at xmax
VD
41
cm³
Power handling
P
40
W
Program power
Pmax
110
W

Voice Coil

Nominal impedance
Z
8
Ω
DC resistance
RE
5.7
Ω
Inductance (1kHz)
LE
0.49
mH
VC Diameter
26
mm
Winding height
HVC
12
mm

Magnet

Flux density
B
1.1
T
Force factor
Bl
6.6
N/A
Motor constant
Bl/√RE
2.76
N/√W
Air gap height
HAG
6
mm
Weight
0.6
kg

Diaphragm

Effective diameter
132
mm
Effective area
SD
136
cm²
Moving mass
MMS
12.1
g
Moving mass (without air load)
MMD
10.9
g

Suspensions

Stiffness
KMS
0.84
N/mm
Compliance
CMS
1190
µm/N
Equivalent volume to the compliance
VAS
31
L
Mechanical resistance
RMS
0.51
N·s/m

Dimensions

Nominal diameter
8
180
mm
Volume occupied by the driver (estimated)
0.74
L
Net weight
1.8
kg
SEAS H1794-08 FEA18RCZ SPL & Impedance
SEAS H1794-08 FEA18RCZ Dimensions

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