Dayton Audio Reference RS75-8
4Ω
8Ω
Full-range
3″ / 72 mm
Nominal diameter
185 Hz
Resonance
1.07
Q factor
81 dB
Sensitivity
± 1.3 mm
Linear excursion
30 W
Program Power
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Sensitivity (1w, 1m, infinite baffle)
SPL1W
81.3
dB
Frequency response
160 - 20000
Hz
Thiele & Small parameters
Resonance frequency (free air)
fS
185
Hz
Mechanical quality factor
QMS
5.12
Electrical quality factor
QES
1.35
Total quality factor
QTS
1.07
Large signal parameters
Maximum linear excursion
xmax
1.3
mm
Air volume displaced at xmax
VD
1.6
cm³
Power handling
P
15
W
Program power
Pmax
30
W
Voice Coil
Nominal impedance
Z
8
Ω
DC resistance
RE
6.2
Ω
Inductance (1kHz)
LE
0.32
mH
Winding material
Copper
Former material
Aluminum
Magnet
Force factor
Bl
2.55
N/A
Motor constant
Bl/√RE
1.02
N/√W
Material
AlNiCo
Diaphragm
Effective diameter
39
mm
Effective area
SD
12
cm²
Moving mass
MMS
1.2
g
Moving mass (without air load)
MMD
1.2
g
Material
Aluminum
Suspensions
Stiffness
KMS
1.67
N/mm
Compliance
CMS
600
µm/N
Equivalent volume to the compliance
VAS
0.113
L
Mechanical resistance
RMS
0.28
N·s/m
Surround material
Rubber
Dimensions
Nominal diameter
3
″
72
mm
Overall diameter
72
mm
Baffle cutout diameter
54
mm
Overall depth
39
mm
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SpeakerbenchSimilar speaker drivers to Dayton Audio RS75-8
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2.3″Full-range
fS
190 Hz
SD
13 cm²
120 - 20000 Hz
QTS
0.98
xmax
0.6 mm
SPL1W
82 dB
Bl/√RE
0.84
Pmax
12 W
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3″Full-range
fS
189 Hz
SD
12 cm²
170 - 20000 Hz
QTS
0.95
xmax
1.3 mm
SPL1W
82 dB
Bl/√RE
1.04
Pmax
30 W
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2″Full-range
fS
180 Hz
SD
15 cm²
150 - 20000 Hz
QTS
1.00
xmax
2.0 mm
SPL1W
82 dB
Bl/√RE
1.04
Pmax
30 W