Dayton Audio DMA45-4
4Ω
8ΩFull-range
1.5″ / 38 mm
Nominal diameter
151 Hz
Resonance
0.56
Q factor
78 dB
Sensitivity
± 2 mm
Linear excursion
20 W
Program Power
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Available on (affiliate link)
Parts Express
$
Specifications
Sensitivity (1w, 1m, infinite baffle)
SPL1W
77.6
dB
Frequency response
150 - 20000
Hz
Thiele & Small parameters
Resonance frequency (free air)
fS
151
Hz
Mechanical quality factor
QMS
5.23
Electrical quality factor
QES
0.62
Total quality factor
QTS
0.56
Large signal parameters
Maximum linear excursion
xmax
2.0
mm
Air volume displaced at xmax
VD
1.7
cm³
Power handling
P
10
W
Program power
Pmax
20
W
Voice Coil
Nominal impedance
Z
4
Ω
DC resistance
RE
3.7
Ω
Inductance (1kHz)
LE
0.3
mH
VC Diameter
19
mm
Former material
Kapton/Polyimide
Magnet
Force factor
Bl
2.2
N/A
Motor constant
Bl/√RE
1.14
N/√W
Diaphragm
Effective diameter
33
mm
Effective area
SD
8.6
cm²
Moving mass
MMS
1.3
g
Moving mass (without air load)
MMD
1.3
g
Suspensions
Stiffness
KMS
1.21
N/mm
Compliance
CMS
830
µm/N
Equivalent volume to the compliance
VAS
0.085
L
Mechanical resistance
RMS
0.24
N·s/m
Surround material
Rubber
Dimensions
Nominal diameter
1.5
″
38
mm
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SpeakerbenchSimilar speaker drivers to Dayton Audio DMA45-4
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1.5″Full-range
fS
151 Hz
SD
8.6 cm²
150 - 20000 Hz
QTS
0.59
xmax
2.0 mm
SPL1W
77 dB
Bl/√RE
1.61
Pmax
20 W
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1.5″Full-range
fS
170 Hz
SD
7.1 cm²
150 - 20000 Hz
QTS
0.53
xmax
0.7 mm
SPL1W
80 dB
Bl/√RE
1.21
Pmax
10 W
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2″Full-range
fS
168 Hz
SD
15 cm²
150 - 17000 Hz
QTS
0.58
xmax
1.4 mm
SPL1W
81 dB
Bl/√RE
2.01
Pmax
30 W