Scan-Speak Ellipticor 21WE/8542T00

Mid Bass

8″ / 210 mm
Nominal diameter
36 Hz
Resonance
0.38
Q factor
90 dB
Sensitivity
± 7.7 mm
Linear excursion
100 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
89.5
dB
Frequency response
36 - 6000
Hz

Thiele & Small parameters

Resonance frequency (free air)
fS
36.0
Hz
Mechanical quality factor
QMS
6.33
Electrical quality factor
QES
0.40
Total quality factor
QTS
0.38

Large signal parameters

Maximum linear excursion
xmax
7.7
mm
Maximum excursion before damage
xlim
12.0
mm
Air volume displaced at xmax
VD
179
cm³
Power handling
P
50
W
Program power
Pmax
100
W

Voice Coil

Nominal impedance
Z
8
Ω
DC resistance
RE
6.3
Ω
Inductance (1kHz, estimated)
LE
0.66
mH
VC Diameter
45
mm
Winding height
HVC
20.4
mm

Magnet

Force factor
Bl
10.0
N/A
Motor constant
Bl/√RE
3.98
N/√W
Air gap height
HAG
5
mm

Diaphragm

Effective diameter
172
mm
Effective area
SD
233
cm²
Moving mass
MMS
28
g
Moving mass (without air load)
MMD
25.4
g

Suspensions

Stiffness
KMS
1.43
N/mm
Compliance
CMS
700
µm/N
Equivalent volume to the compliance
VAS
54
L
Mechanical resistance
RMS
1.0
N·s/m

Dimensions

Nominal diameter
8
210
mm
Volume occupied by the driver
0.49
L
Net weight
1.8
kg
Scan-Speak 21WE/8542T00 SPL & Impedance
Scan-Speak 21WE/8542T00 Dimensions

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