ESX VX21PRO

Subwoofer

21″ / 530 mm
Nominal diameter
27 Hz
Resonance
0.58
Q factor
91 dB
Sensitivity
± 23 mm
Linear excursion
12000 W
Program Power
ESX VX21PRO SubwooferESX VX21PRO SubwooferESX VX21PRO Subwoofer
Excursion
Velocity
SPL
Phase
Group delay
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
91.0
dB

Thiele & Small parameters

Resonance frequency (free air)
fS
27.4
Hz
Mechanical quality factor
QMS
6.51
Electrical quality factor
QES
0.64
Total quality factor
QTS
0.58

Large signal parameters

Maximum linear excursion
xmax
23.0
mm
Maximum excursion before damage
xlim
35.0
mm
Air volume displaced at xmax
VD
3823
cm³
Power handling
P
6000
W
Program power
Pmax
12000
W

Voice Coil

Nominal impedance
Z
2 x 2
Ω
DC resistance (in series)
RE
3.6
Ω
Inductance (1kHz, in series)
LE
1.45
mH
VC Diameter
100
mm
Winding height
HVC
80
mm
Former material
BASV

Magnet

Force factor (in series)
Bl
21.6
N/A
Motor constant
Bl/√RE
11.4
N/√W
Diameter
250
mm
Height
100
mm
Weight
17.01
kg

Diaphragm

Effective diameter
460
mm
Effective area
SD
1662
cm²
Moving mass
MMS
487
g
Moving mass (without air load)
MMD
439.4
g
Material
Glass-Fibre/Paper

Suspensions

Stiffness
KMS
14.71
N/mm
Compliance
CMS
68
µm/N
Equivalent volume to the compliance
VAS
266
L
Mechanical resistance
RMS
12.88
N·s/m
Surround material
High-Roll-Foam
Spider material
6 layer Nomex

Dimensions

Nominal diameter
21
″
530
mm
Overall diameter
545
mm
Baffle cutout diameter
495
mm
Mounting depth
335
mm
Volume occupied by the driver (estimated)
25.0
L
Net weight
50.4
kg
Frame material
Diecast Aluminium
Impedance
Step response
Tone Burst
DatasheetDatasheet

Export this driver to a simulation software:

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