Dayton Audio ND64-4

16Ω

Full-range

2.5″ / 64 mm
Nominal diameter
103 Hz
Resonance
0.33
Q factor
82 dB
Sensitivity
± 1.9 mm
Linear excursion
30 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
81.8
dB
Frequency response
100 - 20000
Hz

Thiele & Small parameters

Resonance frequency (free air)
fS
103
Hz
Mechanical quality factor
QMS
4.36
Electrical quality factor
QES
0.36
Total quality factor
QTS
0.33

Large signal parameters

Maximum linear excursion
xmax
1.9
mm
Air volume displaced at xmax
VD
3.0
cm³
Power handling
P
15
W
Program power
Pmax
30
W

Voice Coil

Nominal impedance
Z
4
Ω
DC resistance
RE
3.7
Ω
Inductance (1kHz)
LE
0.37
mH
VC Diameter
19
mm
Winding material
CCA
Former material
Polyimide

Magnet

Force factor
Bl
4.13
N/A
Motor constant
Bl/√RE
2.15
N/√W
Material
Neodymium

Diaphragm

Effective diameter
45
mm
Effective area
SD
16
cm²
Moving mass
MMS
2.6
g
Moving mass (without air load)
MMD
2.5
g
Material
Black Anodized Aluminum

Suspensions

Stiffness
KMS
1.08
N/mm
Compliance
CMS
930
µm/N
Equivalent volume to the compliance
VAS
0.42
L
Mechanical resistance
RMS
0.38
N·s/m
Surround material
Rubber

Dimensions

Nominal diameter
2.5
64
mm
Overall diameter
64
mm
Baffle cutout diameter
53
mm
Overall depth
39
mm
Frame material
Stamped Steel
Dayton Audio ND64-4 Impedance
Dayton Audio ND64-4 SPL
Dayton Audio ND64-4 Dimensions

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