8″ / 220 mm
Nominal diameter
21 Hz
Resonance
0.22
Q factor
88 dB
Sensitivity
± 9 mm
Linear excursion
200 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
88.4
dB
Thiele & Small parameters
Resonance frequency (free air)
fS
21.0
Hz
Mechanical quality factor
QMS
5.20
Electrical quality factor
QES
0.23
Total quality factor
QTS
0.22
Large signal parameters
Maximum linear excursion
xmax
9.0
mm
Maximum excursion before damage
xlim
14.0
mm
Air volume displaced at xmax
VD
198
cm³
Power handling
P
80
W
Program power
Pmax
200
W
Voice Coil
Nominal impedance
Z
4
Ω
DC resistance
RE
3.7
Ω
Inductance (1kHz)
LE
0.3
mH
VC Diameter
50
mm
Winding height
HVC
24
mm
Magnet
Force factor
Bl
8.2
N/A
Motor constant
Bl/√RE
4.26
N/√W
Air gap height
HAG
6
mm
Diaphragm
Effective diameter
167
mm
Effective area
SD
220
cm²
Moving mass
MMS
32.5
g
Moving mass (without air load)
MMD
30
g
Suspensions
Stiffness
KMS
0.54
N/mm
Compliance
CMS
1850
µm/N
Equivalent volume to the compliance
VAS
126
L
Mechanical resistance
RMS
0.81
N·s/m
Surround material
SBR Rubber
Dimensions
Nominal diameter
8
″
220
mm
Volume occupied by the driver (estimated)
1.5
L
Net weight
3.6
kg
Similar woofers to Scan-Speak 22W/4851T00
8″Woofer
fS
21 Hz
SD
220 cm²
QTS
0.25
xmax
9.0 mm
SPL1W
88 dB
Bl/√RE
3.98
Pmax
200 W
8″Woofer
fS
25 Hz
SD
220 cm²
25 - 3500 Hz
QTS
0.23
xmax
8.0 mm
SPL1W
89 dB
Bl/√RE
4.01
Pmax
300 W
11″Woofer
fS
23 Hz
SD
363 cm²
QTS
0.26
xmax
7.0 mm
SPL1W
88 dB
Bl/√RE
6.82
Pmax
500 W