12″ / 320 mm
Nominal diameter
82 Hz
Resonance
0.5
Q factor
98 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
Sensitivity (1w, 1m, infinite baffle)
SPL1W
98.2
dB
Frequency response
80 - 16000
Hz
Thiele & Small parameters
Resonance frequency (free air)
fS
82.0
Hz
Mechanical quality factor
QMS
13.30
Electrical quality factor
QES
0.52
Total quality factor
QTS
0.50
Large signal parameters
Maximum linear excursion
xmax
2.0
mm
Air volume displaced at xmax
VD
104
cm³
Power handling
P
120
W
Program power
Pmax
240
W
Voice Coil
Nominal impedance
Z
8
Ω
DC resistance
RE
5.4
Ω
Inductance (1kHz)
LE
1.1
mH
VC Diameter
38
mm
Winding height
HVC
9
mm
Former material
Kraft Paper
Magnet
Flux density
B
1.4
T
Force factor
Bl
12.2
N/A
Motor constant
Bl/√RE
5.25
N/√W
Air gap height
HAG
9
mm
Diaphragm
Effective diameter
258
mm
Effective area
SD
522
cm²
Moving mass
MMS
27
g
Moving mass (without air load)
MMD
18.4
g
Suspensions
Stiffness
KMS
7.41
N/mm
Compliance
CMS
135
µm/N
Equivalent volume to the compliance
VAS
53
L
Mechanical resistance
RMS
1.05
N·s/m
Dimensions
Nominal diameter
12
″
320
mm
Overall diameter
316
mm
Baffle cutout diameter
286
mm
Overall depth
136
mm
Flange thickness
12
mm
Mounting depth
124
mm
Volume occupied by the driver
3.0
L
Net weight
4.6
kg
Similar speaker drivers to B&C Speaker 320K/C-A
12″Full-range
fS
82 Hz
SD
522 cm²
80 - 16000 Hz
QTS
0.59
xmax
2.0 mm
SPL1W
97 dB
Bl/√RE
4.85
Pmax
240 W
12″Guitar Speaker
fS
85 Hz
SD
491 cm²
QTS
0.59
SPL1W
99 dB
Bl/√RE
4.96
Pmax
200 W
12″Guitar Speaker
fS
88 Hz
SD
520 cm²
80 - 5300 Hz
QTS
0.58
xmax
1.2 mm
SPL1W
100 dB
Bl/√RE
5.0
Pmax
80 W