Beyma 12BR70

Subwoofer

12″ / 300 mm
Nominal diameter
31 Hz
Resonance
0.5
Q factor
90 dB
Sensitivity
± 8 mm
Linear excursion
250 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
90.4
dB
Frequency response
35 - 4000
Hz

Thiele & Small parameters

Resonance frequency (free air)
fS
31.0
Hz
Mechanical quality factor
QMS
4.40
Electrical quality factor
QES
0.56
Total quality factor
QTS
0.50

Large signal parameters

Maximum linear excursion
xmax
8.0
mm
Maximum excursion before damage
xlim
26.0
mm
Air volume displaced at xmax
VD
432
cm³
Power handling
P
125
W
Program power
Pmax
250
W

Voice Coil

Nominal impedance
Z
8
Ω
DC resistance
RE
5.6
Ω
Inductance (1kHz)
LE
0.8
mH
VC Diameter
51
mm
Winding height
HVC
19
mm

Magnet

Force factor
Bl
12.1
N/A
Motor constant
Bl/√RE
5.11
N/√W
Air gap height
HAG
7
mm

Diaphragm

Effective diameter
262
mm
Effective area
SD
540
cm²
Moving mass
MMS
74
g
Moving mass (without air load)
MMD
65.2
g

Suspensions

Stiffness
KMS
2.9
N/mm
Compliance
CMS
345
µm/N
Equivalent volume to the compliance
VAS
142
L
Mechanical resistance
RMS
3.3
N·s/m

Dimensions

Nominal diameter
12
300
mm
Overall diameter
312
mm
Baffle cutout diameter
278
mm
Overall depth
134
mm
Volume occupied by the driver (estimated)
1.8
L
Net weight
3.6
kg
Beyma 12BR70 SPL & Impedance
Beyma 12BR70 Dimensions

Export this driver to a simulation software:

WinISDWinISDBasta!Basta!HornrespHornrespQSpeakersQSpeakersSpeakerSimSpeakerSimMfbLabsMfbLabsSpeakerbenchSpeakerbench

Similar subwoofers to Beyma 12BR70

Goldwood GW-15PC/8 Subwoofer
15Subwoofer
fS
33 Hz
SD
824 cm²
25 - 2100 Hz
QTS
0.47
xmax
6.0 mm
SPL1W
91 dB
Bl/√RE
7.58
Pmax
550 W
Beyma 10BR60 V2 Subwoofer
10Subwoofer
fS
29 Hz
SD
380 cm²
30 - 5000 Hz
QTS
0.39
xmax
6.5 mm
SPL1W
90 dB
Bl/√RE
4.28
Pmax
200 W