Beyma 18PWB1000Fe/S

Subwoofer

18″ / 460 mm
Nominal diameter
27 Hz
Resonance
0.38
Q factor
93 dB
Sensitivity
± 12.5 mm
Linear excursion
2000 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
93.2
dB
Frequency response
30 - 2000
Hz

Thiele & Small parameters

Resonance frequency (free air)
fS
27.0
Hz
Mechanical quality factor
QMS
8.20
Electrical quality factor
QES
0.40
Total quality factor
QTS
0.38

Large signal parameters

Maximum linear excursion
xmax
12.5
mm
Maximum excursion before damage
xlim
52.0
mm
Air volume displaced at xmax
VD
1569
cm³
Power handling
P
1000
W
Program power
Pmax
2000
W

Voice Coil

Nominal impedance
Z
8
Ω
DC resistance
RE
6.0
Ω
Inductance (1kHz)
LE
2.0
mH
VC Diameter
102
mm
Winding height
HVC
30
mm

Magnet

Force factor
Bl
25.0
N/A
Motor constant
Bl/√RE
10.2
N/√W
Air gap height
HAG
12
mm

Diaphragm

Effective diameter
400
mm
Effective area
SD
1255
cm²
Moving mass
MMS
245
g
Moving mass (without air load)
MMD
214.6
g

Suspensions

Stiffness
KMS
7.04
N/mm
Compliance
CMS
142
µm/N
Equivalent volume to the compliance
VAS
317
L
Mechanical resistance
RMS
5.1
N·s/m

Dimensions

Nominal diameter
18
460
mm
Overall diameter
461
mm
Baffle cutout diameter
415
mm
Overall depth
212
mm
Volume occupied by the driver (estimated)
7.4
L
Net weight
13.5
kg
Beyma 18PWB1000Fe/S SPL & Impedance
Beyma 18PWB1000Fe/S Dimensions

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