Dayton Audio PC105-4

Full-range

4″ / 107 mm
Nominal diameter
81 Hz
Resonance
0.51
Q factor
86 dB
Sensitivity
± 2 mm
Linear excursion
80 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
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Specifications

Sensitivity (1W, 1m, infinite baffle)
SPL1W
86.4
dB
Frequency response
80 - 15000
Hz

Thiele & Small parameters

Resonance frequency (free air)
fS
81.4
Hz
Mechanical quality factor
QMS
2.17
Electrical quality factor
QES
0.67
Total quality factor
QTS
0.51

Large signal parameters

Maximum linear excursion
xmax
2.0
mm
Air volume displaced at xmax
VD
11
cm³
Power handling
P
40
W
Program power
Pmax
80
W

Voice Coil

Nominal impedance
Z
4
Ω
DC resistance
RE
3.3
Ω
Inductance (1kHz)
LE
0.32
mH
VC Diameter
25
mm
Winding material
Copper
Former material
Aluminum

Magnet

Force factor
Bl
3.3
N/A
Motor constant
Bl/√RE
1.82
N/√W
Material
Ferrite

Diaphragm

Effective diameter
82
mm
Effective area
SD
53
cm²
Moving mass
MMS
4.2
g
Moving mass (without air load)
MMD
3.9
g
Material
Poly Composite

Suspensions

Stiffness
KMS
1.09
N/mm
Compliance
CMS
920
µm/N
Equivalent volume to the compliance
VAS
3.68
L
Mechanical resistance
RMS
0.99
N·s/m
Surround material
Rubber

Dimensions

Nominal diameter
4
107
mm
Overall diameter
107
mm
Baffle cutout diameter
60
mm
Overall depth
102
mm
Volume occupied by the driver (estimated)
0.37
L
Frame material
Stamped Steel
Dayton Audio PC105-4 Impedance
Dayton Audio PC105-4 SPL
Dayton Audio PC105-4 Dimensions

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