Dayton Audio Ultimax II UMII8-22

Subwoofer

8″ / 185 mm
Nominal diameter
46 Hz
Resonance
0.75
Q factor
81 dB
Sensitivity
± 18 mm
Linear excursion
800 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
81.3
dB
Frequency response
30 - 600
Hz

Thiele & Small parameters

Resonance frequency (free air)
fS
46.0
Hz
Mechanical quality factor
QMS
3.10
Electrical quality factor
QES
0.99
Total quality factor
QTS
0.75

Large signal parameters

Maximum linear excursion
xmax
18.0
mm
Air volume displaced at xmax
VD
360
cm³
Power handling
P
400
W
Program power
Pmax
800
W

Voice Coil

Nominal impedance
Z
2 x 2
Ω
DC resistance (in series)
RE
3.9
Ω
Inductance (1kHz, in series)
LE
0.75
mH
VC Diameter
64
mm

Magnet

Force factor (in series)
Bl
9.7
N/A
Motor constant
Bl/√RE
4.91
N/√W
Material
Ferrite

Diaphragm

Effective diameter
160
mm
Effective area
SD
200
cm²
Moving mass
MMS
82
g
Moving mass (without air load)
MMD
80.1
g
Material
Carbon Fiber

Suspensions

Stiffness
KMS
6.76
N/mm
Compliance
CMS
148
µm/N
Equivalent volume to the compliance
VAS
8.4
L
Mechanical resistance
RMS
7.65
N·s/m
Surround material
Rubber

Dimensions

Nominal diameter
8
185
mm
Overall diameter
185
mm
Baffle cutout diameter
145
mm
Overall depth
144
mm
Volume occupied by the driver (estimated)
1.2
L
Frame material
Cast Aluminium
Dayton Audio UMII8-22 Impedance
Dayton Audio UMII8-22 SPL

Export this driver to a simulation software:

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Similar subwoofers to Dayton Audio UMII8-22

Skar Audio IX-8 D4 Subwoofer
8Subwoofer
fS
49 Hz
SD
201 cm²
QTS
0.64
xmax
7.0 mm
SPL1W
83 dB
Bl/√RE
5.63
Pmax
300 W