Beyma 18QLEX1600Fe 4Ω

Subwoofer

18″ / 460 mm
Nominal diameter
31 Hz
Resonance
0.25
Q factor
95 dB
Sensitivity
± 13 mm
Linear excursion
3200 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
94.5
dB
Frequency response
30 - 1200
Hz

Thiele & Small parameters

Resonance frequency (free air)
fS
31.0
Hz
Mechanical quality factor
QMS
11.60
Electrical quality factor
QES
0.25
Total quality factor
QTS
0.25

Large signal parameters

Maximum linear excursion
xmax
13.0
mm
Maximum excursion before damage
xlim
58.0
mm
Air volume displaced at xmax
VD
1632
cm³
Power handling
P
1600
W
Program power
Pmax
3200
W

Voice Coil

Nominal impedance
Z
4
Ω
DC resistance
RE
3.6
Ω
Inductance (1kHz)
LE
2.8
mH
VC Diameter
102
mm
Winding height
HVC
32
mm

Magnet

Force factor
Bl
30.7
N/A
Motor constant
Bl/√RE
16.2
N/√W
Air gap height
HAG
15
mm

Diaphragm

Effective diameter
400
mm
Effective area
SD
1255
cm²
Moving mass
MMS
336
g
Moving mass (without air load)
MMD
305.5
g

Suspensions

Stiffness
KMS
12.5
N/mm
Compliance
CMS
80
µm/N
Equivalent volume to the compliance
VAS
177
L
Mechanical resistance
RMS
5.6
N·s/m

Dimensions

Nominal diameter
18
460
mm
Overall diameter
462
mm
Baffle cutout diameter
426
mm
Overall depth
233
mm
Volume occupied by the driver (estimated)
8.3
L
Net weight
14.6
kg
Beyma 18QLEX1600Fe 4Ω SPL & Impedance
Beyma 18QLEX1600Fe 4Ω Dimensions

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