MTX Audio TX812

Subwoofer

12″ / 300 mm
Nominal diameter
35 Hz
Resonance
0.42
Q factor
86 dB
Sensitivity
± 12.5 mm
Linear excursion
5400 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
86.4
dB
Frequency response
26 - 500
Hz

Thiele & Small parameters

Resonance frequency (free air)
fS
35.0
Hz
Mechanical quality factor
QMS
5.12
Electrical quality factor
QES
0.46
Total quality factor
QTS
0.42

Large signal parameters

Maximum linear excursion
xmax
12.5
mm
Air volume displaced at xmax
VD
622
cm³
Power handling
P
1800
W
Program power
Pmax
5400
W

Voice Coil

Nominal impedance
Z
2
Ω
DC resistance
RE
2.0
Ω
Inductance (1kHz, estimated)
LE
0.88
mH

Magnet

Force factor
Bl
18.0
N/A
Motor constant
Bl/√RE
12.7
N/√W

Diaphragm

Effective diameter
252
mm
Effective area
SD
497
cm²
Moving mass
MMS
288.8
g
Moving mass (without air load)
MMD
281
g

Suspensions

Stiffness
KMS
14.29
N/mm
Compliance
CMS
70
µm/N
Equivalent volume to the compliance
VAS
24.6
L
Mechanical resistance
RMS
12.4
N·s/m

Dimensions

Nominal diameter
12
300
mm
Volume occupied by the driver (estimated)
2.3
L
MTX Audio TX812 Dimensions

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