VOLT BM165.1
Mid Bass
6.5″ / 165 mm
Nominal diameter
30 Hz
Resonance
0.24
Q factor
87 dB
Sensitivity
± 6.3 mm
Linear excursion
200 W
Program Power
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Sensitivity (1w, 1m, infinite baffle)
SPL1W
87.4
dB
Frequency response
50 - 3000
Hz
Thiele & Small parameters
Resonance frequency (free air)
fS
30.0
Hz
Mechanical quality factor
QMS
4.12
Electrical quality factor
QES
0.26
Total quality factor
QTS
0.24
Large signal parameters
Maximum linear excursion
xmax
6.3
mm
Maximum excursion before damage
xlim
12.0
mm
Air volume displaced at xmax
VD
97
cm³
Power handling
P
100
W
Program power
Pmax
200
W
Voice Coil
Nominal impedance
Z
8
Ω
DC resistance
RE
5.5
Ω
Inductance (1kHz)
LE
1.2
mH
VC Diameter
38
mm
Winding material
Copper
Magnet
Force factor
Bl
9.8
N/A
Motor constant
Bl/√RE
4.18
N/√W
Weight
1.55
kg
Material
Ferrite
Diaphragm
Effective diameter
140
mm
Effective area
SD
154
cm²
Moving mass
MMS
25
g
Moving mass (without air load)
MMD
23.5
g
Material
Coated Black HIPS
Suspensions
Stiffness
KMS
0.81
N/mm
Compliance
CMS
1230
µm/N
Equivalent volume to the compliance
VAS
40.8
L
Mechanical resistance
RMS
1.14
N·s/m
Surround material
Low Loss Rubber
Dimensions
Nominal diameter
6.5
″
165
mm
Overall diameter
189
mm
Baffle cutout diameter
163
mm
Overall depth
90
mm
Flange thickness
6
mm
Mounting depth
84
mm
Volume occupied by the driver
0.7
L
Net weight
1.95
kg
Frame material
Diecast Aluminium Vented
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7″Coaxial
fS
30 Hz
SD
126 cm²
30 - 25000 Hz
QTS
0.24
xmax
3.0 mm
SPL1W
89 dB
Bl/√RE
3.13
Pmax
300 W
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8″Woofer
fS
32 Hz
SD
209 cm²
32 - 1000 Hz
QTS
0.27
xmax
7.8 mm
SPL1W
88 dB
Bl/√RE
5.72
Pmax
300 W