Beyma 21QLEX1600Fe
Subwoofer
21″ / 540 mm
Nominal diameter
30 Hz
Resonance
0.28
Q factor
96 dB
Sensitivity
± 13 mm
Linear excursion
3200 W
Program Power
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Sensitivity (1w, 1m, infinite baffle)
SPL1W
95.5
dB
Frequency response
30 - 1000
Hz
Thiele & Small parameters
Resonance frequency (free air)
fS
30.0
Hz
Mechanical quality factor
QMS
4.50
Electrical quality factor
QES
0.30
Total quality factor
QTS
0.28
Large signal parameters
Maximum linear excursion
xmax
13.0
mm
Maximum excursion before damage
xlim
60.0
mm
Air volume displaced at xmax
VD
2254
cm³
Power handling
P
1600
W
Program power
Pmax
3200
W
Voice Coil
Nominal impedance
Z
8
Ω
DC resistance
RE
5.4
Ω
Inductance (1kHz)
LE
4.0
mH
VC Diameter
102
mm
Winding height
HVC
32
mm
Magnet
Force factor
Bl
36.4
N/A
Motor constant
Bl/√RE
15.7
N/√W
Air gap height
HAG
15
mm
Diaphragm
Effective diameter
470
mm
Effective area
SD
1734
cm²
Moving mass
MMS
388
g
Moving mass (without air load)
MMD
338.3
g
Suspensions
Stiffness
KMS
13.89
N/mm
Compliance
CMS
72
µm/N
Equivalent volume to the compliance
VAS
309
L
Mechanical resistance
RMS
16.2
N·s/m
Dimensions
Nominal diameter
21
″
540
mm
Overall diameter
545
mm
Baffle cutout diameter
492
mm
Overall depth
266
mm
Volume occupied by the driver (estimated)
11.0
L
Net weight
17.1
kg
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SpeakerbenchSimilar subwoofers to Beyma 21QLEX1600Fe
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fS
31 Hz
SD
1924 cm²
35 - 1200 Hz
QTS
0.28
xmax
15.0 mm
SPL1W
96 dB
Bl/√RE
18
Pmax
4000 W
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21″Subwoofer
fS
30 Hz
SD
1734 cm²
30 - 1000 Hz
QTS
0.29
xmax
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SPL1W
96 dB
Bl/√RE
16
Pmax
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18″Subwoofer
fS
31 Hz
SD
1225 cm²
28 - 2500 Hz
QTS
0.29
xmax
9.0 mm
SPL1W
96 dB
Bl/√RE
11
Pmax
1400 W