8″ / 220 mm
Nominal diameter
29 Hz
Resonance
0.29
Q factor
90 dB
Sensitivity
± 4 mm
Linear excursion
250 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
Sensitivity (1w, 1m, infinite baffle)
SPL1W
90.1
dB
Frequency response
29 - 4000
Hz
Thiele & Small parameters
Resonance frequency (free air)
fS
29.0
Hz
Mechanical quality factor
QMS
1.77
Electrical quality factor
QES
0.34
Total quality factor
QTS
0.29
Large signal parameters
Maximum linear excursion
xmax
4.0
mm
Maximum excursion before damage
xlim
10.0
mm
Air volume displaced at xmax
VD
88
cm³
Power handling
P
100
W
Program power
Pmax
250
W
Voice Coil
Nominal impedance
Z
8
Ω
DC resistance
RE
6.0
Ω
Inductance (1kHz)
LE
0.7
mH
VC Diameter
39
mm
Winding height
HVC
14
mm
Magnet
Flux density
B
1.0
T
Force factor
Bl
8.0
N/A
Motor constant
Bl/√RE
3.27
N/√W
Air gap height
HAG
6
mm
Weight
0.64
kg
Diaphragm
Effective diameter
167
mm
Effective area
SD
220
cm²
Moving mass
MMS
19.8
g
Moving mass (without air load)
MMD
17.3
g
Suspensions
Stiffness
KMS
0.59
N/mm
Compliance
CMS
1700
µm/N
Equivalent volume to the compliance
VAS
103
L
Mechanical resistance
RMS
2.1
N·s/m
Dimensions
Nominal diameter
8
″
220
mm
Volume occupied by the driver (estimated)
0.91
L
Net weight
2.2
kg
Similar subwoofers to SEAS H1659-08 U22REX/P-SL
8″Woofer
fS
27 Hz
SD
216 cm²
QTS
0.30
xmax
6.5 mm
SPL1W
89 dB
Bl/√RE
3.8
Pmax
120 W
8″Woofer
fS
27 Hz
SD
220 cm²
27 - 4500 Hz
QTS
0.26
xmax
6.0 mm
SPL1W
90 dB
Bl/√RE
3.33
Pmax
300 W
8″Woofer
fS
24 Hz
SD
222 cm²
24 - 2000 Hz
QTS
0.30
xmax
4.5 mm
SPL1W
89 dB
Bl/√RE
3.62
Pmax
160 W