6.5″ / 165 mm
Nominal diameter
85 Hz
Resonance
0.33
Q factor
93 dB
Sensitivity
± 3 mm
Linear excursion
340 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
92.8
dB
Frequency response
90 - 8000
Hz
Thiele & Small parameters
Resonance frequency (free air)
fS
85.0
Hz
Mechanical quality factor
QMS
3.70
Electrical quality factor
QES
0.36
Total quality factor
QTS
0.33
Large signal parameters
Maximum linear excursion
xmax
3.0
mm
Maximum excursion before damage
xlim
20.0
mm
Air volume displaced at xmax
VD
42
cm³
Power handling
P
170
W
Program power
Pmax
340
W
Voice Coil
Nominal impedance
Z
8
Ω
DC resistance
RE
6.0
Ω
Inductance (1kHz)
LE
0.2
mH
VC Diameter
51
mm
Winding height
HVC
9
mm
Magnet
Force factor
Bl
11.2
N/A
Motor constant
Bl/√RE
4.57
N/√W
Air gap height
HAG
7
mm
Diaphragm
Effective diameter
134
mm
Effective area
SD
140
cm²
Moving mass
MMS
14
g
Moving mass (without air load)
MMD
12.7
g
Suspensions
Stiffness
KMS
4.0
N/mm
Compliance
CMS
250
µm/N
Equivalent volume to the compliance
VAS
7
L
Mechanical resistance
RMS
2.0
N·s/m
Dimensions
Nominal diameter
6.5
″
165
mm
Overall diameter
188
mm
Baffle cutout diameter
146
mm
Overall depth
78
mm
Volume occupied by the driver (estimated)
0.55
L
Net weight
1.6
kg
Similar speaker drivers to Beyma 6G40Nd
6″Woofer
fS
90 Hz
SD
130 cm²
80 - 8000 Hz
QTS
0.33
xmax
5.0 mm
SPL1W
93 dB
Bl/√RE
4.53
Pmax
240 W
6″Mid-range
fS
76 Hz
SD
127 cm²
65 - 6000 Hz
QTS
0.27
xmax
3.0 mm
SPL1W
94 dB
Bl/√RE
4.26
Pmax
400 W
5″Coaxial
fS
75 Hz
SD
95 cm²
75 - 20000 Hz
QTS
0.27
xmax
5.7 mm
SPL1W
93 dB
Bl/√RE
3.2
Pmax
300 W