BMS 8S219

Woofer

8″ / 203 mm
Nominal diameter
82 Hz
Resonance
0.41
Q factor
92 dB
Sensitivity
± 6.3 mm
Linear excursion
500 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
92.4
dB
Frequency response
80 - 3000
Hz

Thiele & Small parameters

Resonance frequency (free air)
fS
82.0
Hz
Mechanical quality factor
QMS
4.80
Electrical quality factor
QES
0.45
Total quality factor
QTS
0.41

Large signal parameters

Maximum linear excursion
xmax
6.3
mm
Air volume displaced at xmax
VD
140
cm³
Power handling
P
250
W
Program power
Pmax
500
W

Voice Coil

Nominal impedance
Z
8
Ω
DC resistance
RE
5.8
Ω
Inductance (1kHz)
LE
0.52
mH
VC Diameter
52
mm
Winding height
HVC
19
mm
Winding material
Copper

Magnet

Force factor
Bl
13.3
N/A
Motor constant
Bl/√RE
5.52
N/√W
Air gap height
HAG
6.5
mm
Material
Ferrite

Diaphragm

Effective diameter
168
mm
Effective area
SD
222
cm²
Moving mass
MMS
26.6
g
Moving mass (without air load)
MMD
24.2
g

Suspensions

Stiffness
KMS
7.14
N/mm
Compliance
CMS
140
µm/N
Equivalent volume to the compliance
VAS
9.7
L
Mechanical resistance
RMS
2.86
N·s/m

Dimensions

Nominal diameter
8
203
mm
Volume occupied by the driver (estimated)
0.85
L
Frame material
Cast Aluminum
BMS 8S219 Impedance
BMS 8S219 SPL & Distortion
BMS 8S219 Dimensions

Export this driver to a simulation software:

WinISDWinISDBasta!Basta!HornrespHornrespQSpeakersQSpeakersSpeakerSimSpeakerSimMfbLabsMfbLabsSpeakerbenchSpeakerbench

Similar woofers to BMS 8S219

Celestion NTR08-2011D Low frequency
8Low frequency
fS
85 Hz
SD
227 cm²
70 - 6000 Hz
QTS
0.44
xmax
6.0 mm
SPL1W
92 dB
Bl/√RE
4.98
Pmax
400 W
P.Audio 8NT-65MB Low frequency
8Low frequency
fS
81 Hz
SD
214 cm²
80 - 5000 Hz
QTS
0.43
xmax
3.8 mm
SPL1W
92 dB
Bl/√RE
5.41
Pmax
500 W