MTX Audio RT15-04

Subwoofer

15″ / 380 mm
Nominal diameter
20 Hz
Resonance
0.48
Q factor
87 dB
Sensitivity
± 16 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
87.3
dB
Frequency response
20 - 200
Hz

Thiele & Small parameters

Resonance frequency (free air)
fS
20.0
Hz
Mechanical quality factor
QMS
6.07
Electrical quality factor
QES
0.52
Total quality factor
QTS
0.48

Large signal parameters

Maximum linear excursion
xmax
16.0
mm
Air volume displaced at xmax
VD
1326
cm³
Power handling
P
300
W
Program power
Pmax
900
W

Voice Coil

Nominal impedance
Z
4
Ω
DC resistance
RE
3.6
Ω
Inductance (1kHz, estimated)
LE
1.5
mH

Magnet

Force factor
Bl
15.2
N/A
Motor constant
Bl/√RE
8.01
N/√W

Diaphragm

Effective diameter
325
mm
Effective area
SD
829
cm²
Moving mass
MMS
263
g
Moving mass (without air load)
MMD
246.4
g

Suspensions

Stiffness
KMS
4.33
N/mm
Compliance
CMS
231
µm/N
Equivalent volume to the compliance
VAS
223
L
Mechanical resistance
RMS
5.44
N·s/m

Dimensions

Nominal diameter
15
380
mm
Volume occupied by the driver (estimated)
4.3
L

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