Morel Ultimate UW 1258
Subwoofer
12″ / 305 mm
Nominal diameter
21 Hz
Resonance
0.43
Q factor
86 dB
Sensitivity
± 12.5 mm
Linear excursion
1600 W
Program Power
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Available on (affiliate link)
Parts Express
$$$
Specifications
Sensitivity (1w, 1m, infinite baffle)
SPL1W
85.9
dB
Thiele & Small parameters
Resonance frequency (free air)
fS
21.0
Hz
Mechanical quality factor
QMS
1.88
Electrical quality factor
QES
0.56
Total quality factor
QTS
0.43
Large signal parameters
Maximum linear excursion
xmax
12.5
mm
Air volume displaced at xmax
VD
546
cm³
Power handling
P
800
W
Program power
Pmax
1600
W
Voice Coil
Nominal impedance
Z
8
Ω
DC resistance
RE
6.8
Ω
Inductance (1kHz)
LE
1.33
mH
VC Diameter
130
mm
Winding height
HVC
37
mm
Winding material
Hexatech™ Aluminum
Former material
Aluminum
Magnet
Flux density
B
0.64
T
Force factor
Bl
13.67
N/A
Motor constant
Bl/√RE
5.24
N/√W
Air gap height
HAG
12
mm
Material
High flux double ferrite vented
Diaphragm
Effective diameter
236
mm
Effective area
SD
437
cm²
Moving mass
MMS
105.5
g
Moving mass (without air load)
MMD
98.6
g
Material
Composite cellular fiber
Suspensions
Stiffness
KMS
2.27
N/mm
Compliance
CMS
440
µm/N
Equivalent volume to the compliance
VAS
138
L
Mechanical resistance
RMS
8.15
N·s/m
Dimensions
Nominal diameter
12
″
305
mm
Overall diameter
305
mm
Baffle cutout diameter
270
mm
Overall depth
154
mm
Flange thickness
6
mm
Mounting depth
148
mm
Volume occupied by the driver (estimated)
2.8
L
Net weight
6.3
kg
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SpeakerbenchSimilar subwoofers to Morel UW 1258
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12″Subwoofer
fS
24 Hz
SD
471 cm²
10 - 900 Hz
QTS
0.46
xmax
12.5 mm
SPL1W
87 dB
Bl/√RE
6.76
Pmax
2000 W
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