18″ / 462 mm
Nominal diameter
32 Hz
Resonance
0.33
Q factor
96 dB
Sensitivity
± 9.1 mm
Linear excursion
2400 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
Sensitivity (1w, 1m, infinite baffle)
SPL1W
95.6
dB
Frequency response
35 - 1000
Hz
Thiele & Small parameters
Resonance frequency (free air)
fS
32.0
Hz
Mechanical quality factor
QMS
10.02
Electrical quality factor
QES
0.35
Total quality factor
QTS
0.33
Large signal parameters
Maximum linear excursion
xmax
9.1
mm
Air volume displaced at xmax
VD
1092
cm³
Power handling
P
1200
W
Program power
Pmax
2400
W
Voice Coil
Nominal impedance
Z
8
Ω
DC resistance
RE
6.1
Ω
Inductance (1kHz)
LE
0.61
mH
VC Diameter
102
mm
Former material
Glass Fiber
Magnet
Force factor
Bl
27.57
N/A
Motor constant
Bl/√RE
11.2
N/√W
Diaphragm
Effective diameter
391
mm
Effective area
SD
1200
cm²
Moving mass
MMS
217.8
g
Moving mass (without air load)
MMD
188.7
g
Suspensions
Stiffness
KMS
8.77
N/mm
Compliance
CMS
114
µm/N
Equivalent volume to the compliance
VAS
254
L
Mechanical resistance
RMS
4.37
N·s/m
Dimensions
Nominal diameter
18
″
462
mm
Overall diameter
462
mm
Baffle cutout diameter
414
mm
Overall depth
184
mm
Volume occupied by the driver (estimated)
5.7
L
Similar subwoofers to Dayton Audio Apollo 18N
18″Subwoofer
fS
30 Hz
SD
1200 cm²
25 - 1000 Hz
QTS
0.30
xmax
12.0 mm
SPL1W
95 dB
Bl/√RE
11
Pmax
3000 W
15″Woofer
fS
34 Hz
SD
856 cm²
45 - 1500 Hz
QTS
0.33
xmax
4.1 mm
SPL1W
96 dB
Bl/√RE
7.86
Pmax
1600 W
18″Subwoofer
fS
31 Hz
SD
1213 cm²
20 - 200 Hz
QTS
0.34
xmax
8.0 mm
SPL1W
95 dB
Bl/√RE
11
Pmax
2400 W