SB Acoustics SB15NBAC30-4

4Ω
8Ω

Mid Bass

5″ / 127 mm
Nominal diameter
33 Hz
Resonance
0.29
Q factor
86 dB
Sensitivity
± 5 mm
Linear excursion
100 W
Program Power
SB Acoustics SB15NBAC30-4 Mid BassSB Acoustics SB15NBAC30-4 Mid Bass
Impedance
Excursion
Velocity
SPL
Phase
Group delay
Step response
Tone Burst
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
85.5
dB

Thiele & Small parameters

Resonance frequency (free air)
fS
33.0
Hz
Mechanical quality factor
QMS
4.40
Electrical quality factor
QES
0.31
Total quality factor
QTS
0.29

Large signal parameters

Maximum linear excursion
xmax
5.0
mm
Air volume displaced at xmax
VD
41
cm³
Power handling
P
50
W
Program power
Pmax
100
W

Voice Coil

Nominal impedance
Z
4
Ω
DC resistance
RE
3.1
Ω
Inductance (1kHz)
LE
0.12
mH
VC Diameter
31
mm
Winding height
HVC
15
mm

Magnet

Flux density
B
1.0
T
Force factor
Bl
4.7
N/A
Motor constant
Bl/√RE
2.67
N/√W
Air gap height
HAG
5
mm
Weight
0.54
kg

Diaphragm

Effective diameter
102
mm
Effective area
SD
82
cm²
Moving mass
MMS
10.6
g
Moving mass (without air load)
MMD
10.1
g

Suspensions

Stiffness
KMS
0.46
N/mm
Compliance
CMS
2200
µm/N
Equivalent volume to the compliance
VAS
21
L
Mechanical resistance
RMS
0.5
N·s/m

Dimensions

Nominal diameter
5
″
127
mm
Volume occupied by the driver (estimated)
0.59
L
Net weight
1.46
kg
SPL & Impedance
SB Acoustics SB15NBAC30-4 SPL & Impedance
SB Acoustics SB15NBAC30-4 Dimensions
DatasheetDatasheet

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