Dayton Audio Odeum Apollo 15N

Woofer

15″ / 389 mm
Nominal diameter
44 Hz
Resonance
0.33
Q factor
99 dB
Sensitivity
± 6.55 mm
Linear excursion
1000 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
Apply
Sensitivity (1W, 1m, infinite baffle)
SPL1W
98.9
dB
Frequency response
40 - 4500
Hz

Thiele & Small parameters

Resonance frequency (free air)
fS
44.0
Hz
Mechanical quality factor
QMS
10.47
Electrical quality factor
QES
0.34
Total quality factor
QTS
0.33

Large signal parameters

Maximum linear excursion
xmax
6.55
mm
Air volume displaced at xmax
VD
553
cm³
Power handling
P
500
W
Program power
Pmax
1000
W

Voice Coil

Nominal impedance
Z
8
Ω
DC resistance
RE
5.8
Ω
Inductance (1kHz)
LE
0.14
mH
VC Diameter
76
mm
Winding material
Copper
Former material
Glass Fiber

Magnet

Force factor
Bl
20.96
N/A
Motor constant
Bl/√RE
8.7
N/√W
Material
Neodymium

Diaphragm

Effective diameter
328
mm
Effective area
SD
845
cm²
Moving mass
MMS
93.4
g
Moving mass (without air load)
MMD
76.1
g
Material
Coated Paper

Suspensions

Stiffness
KMS
7.04
N/mm
Compliance
CMS
142
µm/N
Equivalent volume to the compliance
VAS
155
L
Mechanical resistance
RMS
2.47
N·s/m
Surround material
Paper

Dimensions

Nominal diameter
15
389
mm
Overall diameter
389
mm
Baffle cutout diameter
353
mm
Overall depth
169
mm
Volume occupied by the driver (estimated)
4.1
L
Frame material
Steel
Dayton Audio Apollo 15N Impedance
Dayton Audio Apollo 15N SPL

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