6.5″ / 170 mm
Nominal diameter
130 Hz
Resonance
0.44
Q factor
93 dB
Sensitivity
± 2 mm
Linear excursion
240 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
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Parts Express
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Specifications
Sensitivity (1W, 1m, infinite baffle)
SPL1W
93.1
dB
Frequency response
130 - 6000
Hz
Thiele & Small parameters
Resonance frequency (free air)
fS
130
Hz
Mechanical quality factor
QMS
3.70
Electrical quality factor
QES
0.49
Total quality factor
QTS
0.44
Large signal parameters
Maximum linear excursion
xmax
2.0
mm
Air volume displaced at xmax
VD
26
cm³
Power handling
P
120
W
Program power
Pmax
240
W
Voice Coil
Nominal impedance
Z
8
Ω
DC resistance
RE
5.7
Ω
Inductance (1kHz)
LE
0.25
mH
VC Diameter
38
mm
Winding height
HVC
9
mm
Winding material
Aluminium
Former material
Glass Fibre
Magnet
Flux density
B
1.4
T
Force factor
Bl
10.5
N/A
Motor constant
Bl/√RE
4.4
N/√W
Air gap height
HAG
6
mm
Diaphragm
Effective diameter
130
mm
Effective area
SD
132
cm²
Moving mass
MMS
12
g
Moving mass (without air load)
MMD
10.8
g
Suspensions
Stiffness
KMS
7.75
N/mm
Compliance
CMS
129
µm/N
Equivalent volume to the compliance
VAS
3
L
Mechanical resistance
RMS
2.65
N·s/m
Dimensions
Nominal diameter
6.5
″
170
mm
Overall diameter
187
mm
Baffle cutout diameter
145
mm
Overall depth
82
mm
Flange thickness
9
mm
Mounting depth
73
mm
Volume occupied by the driver
0.8
L
Net weight
2.3
kg
Similar speaker drivers to B&C Speaker 6MD38
6.5″Low frequency
fS
133 Hz
SD
154 cm²
150 - 7000 Hz
QTS
0.44
xmax
4.0 mm
SPL1W
94 dB
Bl/√RE
4.39
Pmax
300 W
6.5″Mid-range
fS
138 Hz
SD
132 cm²
150 - 6000 Hz
QTS
0.47
xmax
3.0 mm
SPL1W
93 dB
Bl/√RE
4.22
Pmax
400 W
6.5″Mid Bass
fS
115 Hz
SD
132 cm²
115 - 5000 Hz
QTS
0.35
xmax
3.5 mm
SPL1W
94 dB
Bl/√RE
4.56
Pmax
400 W