21″ / 530 mm
Nominal diameter
32 Hz
Resonance
0.32
Q factor
95 dB
Sensitivity
± 14.9 mm
Linear excursion
4000 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
94.7
dB
Frequency response
30 - 1000
Hz
Thiele & Small parameters
Resonance frequency (free air)
fS
32.0
Hz
Mechanical quality factor
QMS
5.67
Electrical quality factor
QES
0.34
Total quality factor
QTS
0.32
Large signal parameters
Maximum linear excursion
xmax
14.9
mm
Maximum excursion before damage
xlim
26.4
mm
Air volume displaced at xmax
VD
2533
cm³
Power handling
P
2000
W
Program power
Pmax
4000
W
Voice Coil
Nominal impedance
Z
8
Ω
DC resistance
RE
5.3
Ω
Inductance (1kHz)
LE
2.79
mH
VC Diameter
134
mm
Winding height
HVC
38.8
mm
Former material
Glass Fiber
Magnet
Force factor
Bl
38.27
N/A
Motor constant
Bl/√RE
16.6
N/√W
Air gap height
HAG
18
mm
Diameter
130
mm
Height
14
mm
Diaphragm
Effective diameter
465
mm
Effective area
SD
1700
cm²
Moving mass
MMS
458.8
g
Moving mass (without air load)
MMD
411.4
g
Material
Water Resistant Treated Paper + Water Proof Both Sides Treatment
Suspensions
Stiffness
KMS
19.23
N/mm
Compliance
CMS
52
µm/N
Equivalent volume to the compliance
VAS
215
L
Mechanical resistance
RMS
16.27
N·s/m
Surround material
Polycotton
Dimensions
Nominal diameter
21
″
530
mm
Volume occupied by the driver
10.55
L
Net weight
17.0
kg
Similar subwoofers to LaVoce SAN215.30
21″Subwoofer
fS
32 Hz
SD
1680 cm²
30 - 1000 Hz
QTS
0.36
xmax
15.0 mm
SPL1W
94 dB
Bl/√RE
16
Pmax
4000 W
18″Subwoofer
fS
32 Hz
SD
1212 cm²
30 - 1500 Hz
QTS
0.33
xmax
13.0 mm
SPL1W
94 dB
Bl/√RE
13
Pmax
3200 W
21″Subwoofer
fS
32 Hz
SD
1662 cm²
25 - 1500 Hz
QTS
0.31
xmax
14.0 mm
SPL1W
95 dB
Bl/√RE
15
Pmax
3600 W