Dayton Audio DMA90-4
4Ω
8ΩFull-range
3.5″ / 89 mm
Nominal diameter
88 Hz
Resonance
0.45
Q factor
86 dB
Sensitivity
± 2.5 mm
Linear excursion
60 W
Program Power
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Parts Express
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Specifications
Sensitivity (1w, 1m, infinite baffle)
SPL1W
86.0
dB
Frequency response
85 - 20000
Hz
Thiele & Small parameters
Resonance frequency (free air)
fS
88.2
Hz
Mechanical quality factor
QMS
2.50
Electrical quality factor
QES
0.56
Total quality factor
QTS
0.45
Large signal parameters
Maximum linear excursion
xmax
2.5
mm
Air volume displaced at xmax
VD
9.6
cm³
Power handling
P
30
W
Program power
Pmax
60
W
Voice Coil
Nominal impedance
Z
4
Ω
DC resistance
RE
3.8
Ω
Inductance (1kHz)
LE
0.3
mH
VC Diameter
25
mm
Magnet
Force factor
Bl
3.5
N/A
Motor constant
Bl/√RE
1.8
N/√W
Diaphragm
Effective diameter
70
mm
Effective area
SD
39
cm²
Moving mass
MMS
3.2
g
Moving mass (without air load)
MMD
3
g
Suspensions
Stiffness
KMS
0.97
N/mm
Compliance
CMS
1030
µm/N
Equivalent volume to the compliance
VAS
2.27
L
Mechanical resistance
RMS
0.71
N·s/m
Dimensions
Nominal diameter
3.5
″
89
mm
Volume occupied by the driver (estimated)
0.1
L
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3.5″Mid-range
fS
85 Hz
SD
39 cm²
85 - 10000 Hz
QTS
0.53
xmax
2.5 mm
SPL1W
85 dB
Bl/√RE
1.96
Pmax
90 W
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4″Woofer
fS
96 Hz
SD
37 cm²
90 - 12500 Hz
QTS
0.54
xmax
3.7 mm
SPL1W
86 dB
Bl/√RE
1.54
Pmax
45 W
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4″Woofer
fS
78 Hz
SD
54 cm²
100 - 8000 Hz
QTS
0.43
xmax
4.3 mm
SPL1W
86 dB
Bl/√RE
2.76
Pmax
70 W