SB Acoustics SB12PFC25-4-COAX

Coaxial

4″ / 102 mm
Nominal diameter
58 Hz
Resonance
0.33
Q factor
86 dB
Sensitivity
± 5 mm
Linear excursion
60 W
Program Power
SB Acoustics SB12PFC25-4-COAX CoaxialSB Acoustics SB12PFC25-4-COAX Coaxial
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
85.9
dB

Thiele & Small parameters

Resonance frequency (free air)
fS
58.0
Hz
Mechanical quality factor
QMS
4.07
Electrical quality factor
QES
0.36
Total quality factor
QTS
0.33

Large signal parameters

Maximum linear excursion
xmax
5.0
mm
Air volume displaced at xmax
VD
23
cm³
Power handling
P
30
W
Program power
Pmax
60
W

Voice Coil

Nominal impedance
Z
4
Ω
DC resistance
RE
3.1
Ω
Inductance (1kHz)
LE
0.26
mH
VC Diameter
25
mm
Winding height
HVC
15
mm

Magnet

Flux density
B
1.0
T
Force factor
Bl
3.8
N/A
Motor constant
Bl/√RE
2.16
N/√W
Air gap height
HAG
5
mm
Weight
0.4
kg

Diaphragm

Effective diameter
76
mm
Effective area
SD
45
cm²
Moving mass
MMS
4.5
g
Moving mass (without air load)
MMD
4.3
g

Suspensions

Stiffness
KMS
0.6
N/mm
Compliance
CMS
1660
µm/N
Equivalent volume to the compliance
VAS
4.8
L
Mechanical resistance
RMS
0.4
N·s/m

Dimensions

Nominal diameter
4
″
102
mm
Volume occupied by the driver (estimated)
0.34
L
Net weight
0.86
kg
SPL & Impedance
SB Acoustics SB12PFC25-4-COAX SPL & Impedance
SB Acoustics SB12PFC25-4-COAX Dimensions
DatasheetDatasheet

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fS
61 Hz
SD
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61 - 7000 Hz
QTS
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xmax
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SPL1W
86 dB
Bl/√RE
2.18
Pmax
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