18″ / 460 mm
Nominal diameter
37 Hz
Resonance
0.34
Q factor
96 dB
Sensitivity
± 9.5 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
25 - 2000
Hz
Thiele & Small parameters
Resonance frequency (free air)
fS
37.0
Hz
Mechanical quality factor
QMS
10.39
Electrical quality factor
QES
0.35
Total quality factor
QTS
0.34
Large signal parameters
Maximum linear excursion
xmax
9.5
mm
Maximum excursion before damage
xlim
26.0
mm
Air volume displaced at xmax
VD
1164
cm³
Power handling
P
1200
W
Program power
Pmax
2400
W
Voice Coil
Nominal impedance
Z
8
Ω
DC resistance
RE
5.3
Ω
Inductance (1kHz)
LE
2.3
mH
VC Diameter
100
mm
Winding height
HVC
25
mm
Magnet
Force factor
Bl
26.3
N/A
Motor constant
Bl/√RE
11.4
N/√W
Air gap height
HAG
14
mm
Diaphragm
Effective diameter
395
mm
Effective area
SD
1225
cm²
Moving mass
MMS
199
g
Moving mass (without air load)
MMD
169.4
g
Suspensions
Stiffness
KMS
10.75
N/mm
Compliance
CMS
93
µm/N
Equivalent volume to the compliance
VAS
198
L
Mechanical resistance
RMS
4.5
N·s/m
Dimensions
Nominal diameter
18
″
460
mm
Volume occupied by the driver (estimated)
3.8
L
Net weight
8.5
kg
Similar subwoofers to Beyma 18P1200Nd/N
18″Subwoofer
fS
36 Hz
SD
1134 cm²
35 - 2500 Hz
QTS
0.35
xmax
8.3 mm
SPL1W
95 dB
Bl/√RE
11
Pmax
2000 W
18″Subwoofer
fS
35 Hz
SD
1207 cm²
35 - 2000 Hz
QTS
0.31
xmax
9.8 mm
SPL1W
96 dB
Bl/√RE
11
Pmax
2000 W
15″Subwoofer
fS
38 Hz
SD
850 cm²
38 - 3500 Hz
QTS
0.35
xmax
6.0 mm
SPL1W
96 dB
Bl/√RE
7.53
Pmax
1200 W