MONACOR SPH-300CTC

Subwoofer

12″ / 308 mm
Nominal diameter
18 Hz
Resonance
0.19
Q factor
90 dB
Sensitivity
± 5.4 mm
Linear excursion
500 W
Program Power
MONACOR SPH-300CTC Subwoofer
Impedance
Excursion
Velocity
SPL
Phase
Group delay
Step response
Tone Burst
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
89.8
dB
Frequency response
18 - 2500
Hz

Thiele & Small parameters

Resonance frequency (free air)
fS
18.0
Hz
Mechanical quality factor
QMS
6.50
Electrical quality factor
QES
0.20
Total quality factor
QTS
0.19

Large signal parameters

Maximum linear excursion
xmax
5.4
mm
Air volume displaced at xmax
VD
267
cm³
Power handling
P
300
W
Program power
Pmax
500
W

Voice Coil

Nominal impedance
Z
2 x 8
Ω
DC resistance (in series)
RE
12.0
Ω
Inductance (1kHz, in series)
LE
4.4
mH
VC Diameter
62
mm
Winding material
Kapton

Magnet

Force factor (in series)
Bl
24.2
N/A
Motor constant
Bl/√RE
6.99
N/√W
Diameter
180
mm
Weight
1.8
kg

Diaphragm

Effective diameter
251
mm
Effective area
SD
495
cm²
Moving mass
MMS
100
g
Moving mass (without air load)
MMD
92
g

Suspensions

Stiffness
KMS
1.33
N/mm
Compliance
CMS
750
µm/N
Equivalent volume to the compliance
VAS
225
L
Mechanical resistance
RMS
1.74
N·s/m

Dimensions

Nominal diameter
12
″
308
mm
Overall diameter
308
mm
Baffle cutout diameter
272
mm
Overall depth
130
mm
Flange thickness
12
mm
Mounting depth
118
mm
Volume occupied by the driver (estimated)
2.6
L
Net weight
6.32
kg
SPL & Impedance
MONACOR SPH-300CTC SPL & Impedance
MONACOR SPH-300CTC Dimensions
DatasheetDatasheet

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