12″ / 312 mm
Nominal diameter
55 Hz
Resonance
0.33
Q factor
95 dB
Sensitivity
± 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
Sensitivity (1w, 1m, infinite baffle)
SPL1W
95.4
dB
Frequency response
55 - 22000
Hz
Thiele & Small parameters
Resonance frequency (free air)
fS
55.0
Hz
Mechanical quality factor
QMS
3.74
Electrical quality factor
QES
0.36
Total quality factor
QTS
0.33
Large signal parameters
Maximum linear excursion
xmax
3.0
mm
Air volume displaced at xmax
VD
162
cm³
Power handling
P
250
W
Program power
Pmax
500
W
Voice Coil
Nominal impedance
Z
8
Ω
DC resistance
RE
5.6
Ω
Inductance (1kHz)
LE
1.1
mH
VC Diameter
75
mm
Winding material
Polyamide
Magnet
Force factor
Bl
16.9
N/A
Motor constant
Bl/√RE
7.14
N/√W
Diameter
169
mm
Weight
1.8
kg
Diaphragm
Effective diameter
262
mm
Effective area
SD
540
cm²
Moving mass
MMS
56
g
Moving mass (without air load)
MMD
47.2
g
Suspensions
Stiffness
KMS
6.25
N/mm
Compliance
CMS
160
µm/N
Equivalent volume to the compliance
VAS
64
L
Mechanical resistance
RMS
5.17
N·s/m
Dimensions
Nominal diameter
12
″
312 x 312
mm
Overall size
312 x 312
mm
Baffle cutout diameter
280
mm
Overall depth
210
mm
Flange thickness
14
mm
Mounting depth
196
mm
Volume occupied by the driver (estimated)
4.1
L
Net weight
8.1
kg
Similar speaker drivers to MONACOR SP-312CX
12″Low frequency
fS
53 Hz
SD
531 cm²
50 - 3000 Hz
QTS
0.33
xmax
5.3 mm
SPL1W
95 dB
Bl/√RE
6.97
Pmax
600 W
12″Mid Bass
fS
54 Hz
SD
515 cm²
50 - 3000 Hz
QTS
0.36
xmax
6.8 mm
SPL1W
95 dB
Bl/√RE
7.25
Pmax
1200 W
12″Bass Guitar Speaker
fS
50 Hz
SD
491 cm²
QTS
0.32
xmax
3.1 mm
SPL1W
96 dB
Bl/√RE
6.58
Pmax
500 W