8″ / 222 mm
Nominal diameter
39 Hz
Resonance
0.53
Q factor
84 dB
Sensitivity
± 12.5 mm
Linear excursion
1600 W
Program Power
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Specifications
Sensitivity (1w, 1m, infinite baffle)
SPL1W
83.5
dB
Frequency response
20 - 900
Hz
Thiele & Small parameters
Resonance frequency (free air)
fS
39.0
Hz
Mechanical quality factor
QMS
4.31
Electrical quality factor
QES
0.61
Total quality factor
QTS
0.53
Large signal parameters
Maximum linear excursion
xmax
12.5
mm
Air volume displaced at xmax
VD
318
cm³
Power handling
P
800
W
Program power
Pmax
1600
W
Voice Coil
Nominal impedance
Z
4
Ω
DC resistance
RE
3.7
Ω
Inductance (1kHz)
LE
0.44
mH
VC Diameter
130
mm
Winding height
HVC
37
mm
Winding material
Hexatech™ Aluminum
Former material
Titanium
Magnet
Flux density
B
0.64
T
Force factor
Bl
13.0
N/A
Motor constant
Bl/√RE
6.76
N/√W
Air gap height
HAG
12
mm
Material
Double Magnet Vented
Diaphragm
Effective diameter
180
mm
Effective area
SD
254
cm²
Moving mass
MMS
107
g
Moving mass (without air load)
MMD
104.1
g
Material
Carbon-fiber laminated paper
Suspensions
Stiffness
KMS
5.88
N/mm
Compliance
CMS
170
µm/N
Equivalent volume to the compliance
VAS
16
L
Mechanical resistance
RMS
5.26
N·s/m
Dimensions
Nominal diameter
8
″
222
mm
Overall diameter
222
mm
Baffle cutout diameter
201
mm
Mounting depth
120
mm
Volume occupied by the driver
2.0
L
Net weight
6.1
kg
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SpeakerbenchSimilar subwoofers to Morel ULTIMO Ti 804
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