6.5″ / 165 mm
Nominal diameter
38 Hz
Resonance
0.4
Q factor
83 dB
Sensitivity
± 13 mm
Linear excursion
100 W
Program Power
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Parts Express
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Specifications
Sensitivity (1w, 1m, infinite baffle)
SPL1W
83.4
dB
Frequency response
38 - 800
Hz
Thiele & Small parameters
Resonance frequency (free air)
fS
38.0
Hz
Mechanical quality factor
QMS
2.65
Electrical quality factor
QES
0.47
Total quality factor
QTS
0.40
Large signal parameters
Maximum linear excursion
xmax
13.0
mm
Air volume displaced at xmax
VD
182
cm³
Power handling
P
50
W
Program power
Pmax
100
W
Voice Coil
Nominal impedance
Z
4
Ω
DC resistance
RE
3.6
Ω
Inductance (1kHz)
LE
0.34
mH
VC Diameter
39
mm
Magnet
Force factor
Bl
8.67
N/A
Motor constant
Bl/√RE
4.57
N/√W
Air gap height
HAG
4
mm
Material
Neodymium
Diaphragm
Effective diameter
134
mm
Effective area
SD
140
cm²
Moving mass
MMS
39.9
g
Moving mass (without air load)
MMD
38.7
g
Material
Paper
Suspensions
Stiffness
KMS
2.36
N/mm
Compliance
CMS
423
µm/N
Equivalent volume to the compliance
VAS
11.8
L
Mechanical resistance
RMS
3.6
N·s/m
Surround material
Rubber
Dimensions
Nominal diameter
6.5
″
165
mm
Volume occupied by the driver (estimated)
0.86
L
Net weight
2.08
kg
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fS
39 Hz
SD
94 cm²
45 - 2500 Hz
QTS
0.35
xmax
7.0 mm
SPL1W
85 dB
Bl/√RE
2.93
Pmax
250 W
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8″Subwoofer
fS
30 Hz
SD
220 cm²
30 - 800 Hz
QTS
0.32
xmax
12.0 mm
SPL1W
84 dB
Bl/√RE
7.79
Pmax
300 W