Beyma 12MI100

Mid-range

12″ / 300 mm
Nominal diameter
58 Hz
Resonance
0.22
Q factor
99 dB
Sensitivity
± 3 mm
Linear excursion
900 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
98.5
dB
Frequency response
60 - 4000
Hz

Thiele & Small parameters

Resonance frequency (free air)
fS
58.0
Hz
Mechanical quality factor
QMS
5.50
Electrical quality factor
QES
0.23
Total quality factor
QTS
0.22

Large signal parameters

Maximum linear excursion
xmax
3.0
mm
Maximum excursion before damage
xlim
24.0
mm
Air volume displaced at xmax
VD
159
cm³
Power handling
P
450
W
Program power
Pmax
900
W

Voice Coil

Nominal impedance
Z
8
Ω
DC resistance
RE
6.3
Ω
Inductance (1kHz)
LE
1.0
mH
VC Diameter
76
mm
Winding height
HVC
13.5
mm

Magnet

Force factor
Bl
21.6
N/A
Motor constant
Bl/√RE
8.61
N/√W
Air gap height
HAG
10
mm

Diaphragm

Effective diameter
260
mm
Effective area
SD
530
cm²
Moving mass
MMS
47
g
Moving mass (without air load)
MMD
38.3
g

Suspensions

Stiffness
KMS
6.14
N/mm
Compliance
CMS
163
µm/N
Equivalent volume to the compliance
VAS
64
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
135
mm
Volume occupied by the driver (estimated)
2.9
L
Net weight
7.2
kg
Beyma 12MI100 SPL & Impedance
Beyma 12MI100 Dimensions

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