HELIX IK S8

Shallow subwoofer

8″ / 200 mm
Nominal diameter
43 Hz
Resonance
0.51
Q factor
84 dB
Sensitivity
± 6 mm
Linear excursion
600 W
Program Power
HELIX IK S8 Shallow subwooferHELIX IK S8 Shallow 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
84.1
dB

Thiele & Small parameters

Resonance frequency (free air)
fS
43.0
Hz
Mechanical quality factor
QMS
4.79
Electrical quality factor
QES
0.57
Total quality factor
QTS
0.51

Large signal parameters

Maximum linear excursion
xmax
6.0
mm
Air volume displaced at xmax
VD
133
cm³
Power handling
P
300
W
Program power
Pmax
600
W

Voice Coil

Nominal impedance
Z
2 x 2
Ω
DC resistance (in series)
RE
3.6
Ω
Inductance (1kHz, in series, estimated)
LE
0.73
mH
VC Diameter
51
mm
Winding height
HVC
19
mm

Magnet

Force factor (in series)
Bl
11.9
N/A
Motor constant
Bl/√RE
6.27
N/√W

Diaphragm

Effective diameter
168
mm
Effective area
SD
222
cm²
Moving mass
MMS
82
g
Moving mass (without air load)
MMD
79.5
g

Suspensions

Stiffness
KMS
6.25
N/mm
Compliance
CMS
160
µm/N
Equivalent volume to the compliance
VAS
11
L
Mechanical resistance
RMS
4.7
N·s/m

Dimensions

Nominal diameter
8
″
200
mm
Overall diameter
213
mm
Baffle cutout diameter
180
mm
Mounting depth
80
mm
Volume occupied by the driver (estimated)
0.96
L
Impedance
Step response
Tone Burst
DatasheetDatasheet

Export this driver to a simulation software:

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fS
46 Hz
SD
329 cm²
QTS
0.56
xmax
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SPL1W
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Bl/√RE
9.76
Pmax
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