SB Acoustics SB15SFCR39-8

Mid Bass

5x8″/ 127x203 mm
Nominal size
32 Hz
Resonance
0.42
Q factor
87 dB
Sensitivity
± 5 mm
Linear excursion
160 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
Discard
Apply
Sensitivity (1W, 1m, infinite baffle)
SPL1W
86.8
dB

Thiele & Small parameters

Resonance frequency (free air)
fS
32.0
Hz
Mechanical quality factor
QMS
7.11
Electrical quality factor
QES
0.45
Total quality factor
QTS
0.42

Large signal parameters

Maximum linear excursion
xmax
5.0
mm
Air volume displaced at xmax
VD
89
cm³
Power handling
P
80
W
Program power
Pmax
160
W

Voice Coil

Nominal impedance
Z
8
Ω
DC resistance
RE
6.2
Ω
Inductance (1kHz)
LE
1.3
mH
VC Diameter
39
mm
Winding height
HVC
16
mm

Magnet

Flux density
B
0.94
T
Force factor
Bl
8.0
N/A
Motor constant
Bl/√RE
3.21
N/√W
Air gap height
HAG
6
mm
Weight
0.54
kg

Diaphragm

Effective diameter
151
mm
Effective area
SD
178
cm²
Moving mass
MMS
23
g
Moving mass (without air load)
MMD
22.1
g

Suspensions

Stiffness
KMS
0.93
N/mm
Compliance
CMS
1080
µm/N
Equivalent volume to the compliance
VAS
48.3
L
Mechanical resistance
RMS
0.65
N·s/m

Dimensions

Nominal size
5 x 8
127 x 203
mm
Volume occupied by the driver (estimated)
0.67
L
Net weight
1.65
kg
SB Acoustics SB15SFCR39-8 SPL & Impedance
SB Acoustics SB15SFCR39-8 Dimensions

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