13″ / 320 mm
Nominal diameter
24 Hz
Resonance
0.21
Q factor
92 dB
Sensitivity
± 7 mm
Linear excursion
700 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
92.2
dB
Thiele & Small parameters
Resonance frequency (free air)
fS
24.0
Hz
Mechanical quality factor
QMS
4.25
Electrical quality factor
QES
0.22
Total quality factor
QTS
0.21
Large signal parameters
Maximum linear excursion
xmax
7.0
mm
Maximum excursion before damage
xlim
28.0
mm
Air volume displaced at xmax
VD
368
cm³
Power handling
P
350
W
Program power
Pmax
700
W
Voice Coil
Nominal impedance
Z
4
Ω
DC resistance
RE
3.1
Ω
Inductance (1kHz)
LE
0.36
mH
VC Diameter
75
mm
Winding height
HVC
22
mm
Magnet
Force factor
Bl
14.0
N/A
Motor constant
Bl/√RE
7.95
N/√W
Air gap height
HAG
8
mm
Diaphragm
Effective diameter
260
mm
Effective area
SD
526
cm²
Moving mass
MMS
93
g
Moving mass (without air load)
MMD
84.2
g
Suspensions
Stiffness
KMS
2.13
N/mm
Compliance
CMS
470
µm/N
Equivalent volume to the compliance
VAS
185
L
Mechanical resistance
RMS
3.3
N·s/m
Surround material
Coated foam
Dimensions
Nominal diameter
13
″
320
mm
Volume occupied by the driver (estimated)
4.4
L
Net weight
9.8
kg
Similar subwoofers to Scan-Speak 32W/4878T11
12″Subwoofer
fS
27 Hz
SD
530 cm²
QTS
0.23
xmax
14.0 mm
SPL1W
93 dB
Bl/√RE
7.7
Pmax
1000 W
12″Subwoofer
fS
27 Hz
SD
530 cm²
QTS
0.23
xmax
14.0 mm
SPL1W
93 dB
Bl/√RE
7.73
Pmax
1000 W
12″Woofer
fS
28 Hz
SD
533 cm²
30 - 1500 Hz
QTS
0.21
xmax
9.3 mm
SPL1W
93 dB
Bl/√RE
8.42
Pmax
800 W