15″ / 380 mm
Nominal diameter
33 Hz
Resonance
0.64
Q factor
87 dB
Sensitivity
± 16 mm
Linear excursion
1800 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
87.4
dB
Frequency response
33 - 200
Hz
Thiele & Small parameters
Resonance frequency (free air)
fS
33.0
Hz
Mechanical quality factor
QMS
3.30
Electrical quality factor
QES
0.80
Total quality factor
QTS
0.64
Large signal parameters
Maximum linear excursion
xmax
16.0
mm
Air volume displaced at xmax
VD
1287
cm³
Power handling
P
600
W
Program power
Pmax
1800
W
Voice Coil
Nominal impedance
Z
2 x 4
Ω
DC resistance (in series)
RE
6.5
Ω
Inductance (1kHz, in series, estimated)
LE
2.79
mH
Magnet
Force factor (in series)
Bl
21.81
N/A
Motor constant
Bl/√RE
8.55
N/√W
Diaphragm
Effective diameter
320
mm
Effective area
SD
804
cm²
Moving mass
MMS
274.8
g
Moving mass (without air load)
MMD
258.8
g
Suspensions
Stiffness
KMS
12.5
N/mm
Compliance
CMS
80
µm/N
Equivalent volume to the compliance
VAS
73
L
Mechanical resistance
RMS
17.27
N·s/m
Dimensions
Nominal diameter
15
″
380
mm
Volume occupied by the driver (estimated)
4.3
L
Similar subwoofers to MTX Audio T815-44
12″Subwoofer
fS
35 Hz
SD
539 cm²
QTS
0.60
xmax
6.5 mm
SPL1W
89 dB
Bl/√RE
6.42
Pmax
500 W
15″Subwoofer
fS
30 Hz
SD
774 cm²
QTS
0.63
xmax
19.0 mm
SPL1W
87 dB
Bl/√RE
9.12
Pmax
2400 W
12″Subwoofer
fS
35 Hz
SD
502 cm²
30 - 600 Hz
QTS
0.62
xmax
7.0 mm
SPL1W
88 dB
Bl/√RE
5.55
Pmax
500 W