1″ / 25 mm
Nominal diameter
120 Hz
Resonance
0.33
Q factor
81 dB
Sensitivity
± 1.25 mm
Linear excursion
8 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
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Specifications
Sensitivity (1w, 1m, infinite baffle)
SPL1W
81.2
dB
Frequency response
120 - 20000
Hz
Thiele & Small parameters
Resonance frequency (free air)
fS
120
Hz
Mechanical quality factor
QMS
3.12
Electrical quality factor
QES
0.37
Total quality factor
QTS
0.33
Large signal parameters
Maximum linear excursion
xmax
1.25
mm
Air volume displaced at xmax
VD
1.1
cm³
Power handling
P
4
W
Program power
Pmax
8
W
Voice Coil
Nominal impedance
Z
4
Ω
DC resistance
RE
3.5
Ω
Inductance (1kHz)
LE
0.05
mH
VC Diameter
28
mm
Magnet
Force factor
Bl
2.61
N/A
Motor constant
Bl/√RE
1.4
N/√W
Air gap height
HAG
2.5
mm
Diaphragm
Effective diameter
34
mm
Effective area
SD
9.0
cm²
Moving mass
MMS
1
g
Moving mass (without air load)
MMD
1
g
Suspensions
Stiffness
KMS
0.51
N/mm
Compliance
CMS
1972
µm/N
Equivalent volume to the compliance
VAS
0.23
L
Mechanical resistance
RMS
0.24
N·s/m
Surround material
Santoprene
Dimensions
Nominal diameter
1
″
25
mm
Net weight
0.081
kg
Similar speaker drivers to Tang Band W1-1828SA
2″Woofer
fS
110 Hz
SD
13 cm²
110 - 10000 Hz
QTS
0.36
xmax
3.0 mm
SPL1W
80 dB
Bl/√RE
1.97
Pmax
30 W
2″Full-range
fS
120 Hz
SD
15 cm²
120 - 12000 Hz
QTS
0.34
xmax
2.0 mm
SPL1W
82 dB
Bl/√RE
2.02
Pmax
20 W
2″Full-range
fS
120 Hz
SD
15 cm²
120 - 15000 Hz
QTS
0.31
xmax
2.0 mm
SPL1W
83 dB
Bl/√RE
2.01
Pmax
20 W