15″ / 380 mm
Nominal diameter
35 Hz
Resonance
0.38
Q factor
96 dB
Sensitivity
± 7.25 mm
Linear excursion
800 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
95.5
dB
Frequency response
35 - 3000
Hz
Thiele & Small parameters
Resonance frequency (free air)
fS
35.0
Hz
Mechanical quality factor
QMS
8.50
Electrical quality factor
QES
0.40
Total quality factor
QTS
0.38
Large signal parameters
Maximum linear excursion
xmax
7.25
mm
Maximum excursion before damage
xlim
15.0
mm
Air volume displaced at xmax
VD
638
cm³
Power handling
P
400
W
Program power
Pmax
800
W
Voice Coil
Nominal impedance
Z
8
Ω
DC resistance
RE
6.4
Ω
Inductance (1kHz)
LE
1.2
mH
VC Diameter
77
mm
Winding height
HVC
17.5
mm
Magnet
Force factor
Bl
17.4
N/A
Motor constant
Bl/√RE
6.88
N/√W
Air gap height
HAG
7
mm
Diaphragm
Effective diameter
335
mm
Effective area
SD
880
cm²
Moving mass
MMS
86
g
Moving mass (without air load)
MMD
68.4
g
Suspensions
Stiffness
KMS
4.12
N/mm
Compliance
CMS
243
µm/N
Equivalent volume to the compliance
VAS
267
L
Mechanical resistance
RMS
2.2
N·s/m
Dimensions
Nominal diameter
15
″
380
mm
Volume occupied by the driver (estimated)
2.9
L
Net weight
6.5
kg
Similar subwoofers to Beyma SM-115N
15″Bass Guitar Speaker
fS
35 Hz
SD
855 cm²
40 - 3500 Hz
QTS
0.43
xmax
4.8 mm
SPL1W
95 dB
Bl/√RE
6.31
Pmax
800 W
18″Subwoofer
fS
34 Hz
SD
1255 cm²
35 - 1000 Hz
QTS
0.39
xmax
11.0 mm
SPL1W
95 dB
Bl/√RE
9.74
Pmax
2000 W
15″Bass Guitar Speaker
fS
33 Hz
SD
856 cm²
52 - 2300 Hz
QTS
0.32
xmax
4.0 mm
SPL1W
96 dB
Bl/√RE
6.87
Pmax
900 W