Black Hydra HGC-2.28

Mid Bass

6.5″ / 160 mm
Nominal diameter
56 Hz
Resonance
0.54
Q factor
90 dB
Sensitivity
150 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
Discard
Apply
Sensitivity (1W, 1m, infinite baffle)
SPL1W
90.0
dB

Thiele & Small parameters

Resonance frequency (free air)
fS
56.1
Hz
Mechanical quality factor
QMS
6.81
Electrical quality factor
QES
0.59
Total quality factor
QTS
0.54

Large signal parameters

Power handling
P
75
W
Program power
Pmax
150
W

Voice Coil

Nominal impedance
Z
4
Ω
DC resistance
RE
3.1
Ω
Inductance (1kHz, estimated)
LE
0.27
mH
Winding material
Copper

Magnet

Force factor
Bl
6.3
N/A
Motor constant
Bl/√RE
3.58
N/√W

Diaphragm

Effective diameter
160
mm
Effective area
SD
201
cm²
Moving mass
MMS
20.2
g
Moving mass (without air load)
MMD
18.6
g

Suspensions

Stiffness
KMS
2.85
N/mm
Compliance
CMS
351
µm/N
Equivalent volume to the compliance
VAS
20.1
L
Mechanical resistance
RMS
1.05
N·s/m

Dimensions

Nominal diameter
6.5
160
mm
Volume occupied by the driver (estimated)
0.46
L
Frame material
Steel

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