3 results
Nominal diameter
SensitivitySPL1W
dB

Thiele & Small parameters

Resonance frequencyfS
Hz
Mechanical quality factorQMS
Electrical quality factorQES
Total quality factorQTS

Large signal parameters

Maximum linear excursionxmax
mm
Air volume displaced at xmaxVD
cm³
Program powerPmax
W

Voice Coil & Magnet

Nominal impedanceZ
Ω
DC resistanceRE
Ω
Force factorBl
N/A
Motor constantBl/√RE
N/√W
InductanceLE
mH
VC Diameter
mm

Diaphragm

Effective diameter
mm
Effective areaSD
cm²
Moving massMMS
g

Suspensions

StiffnessKMS
N/mm
ComplianceCMS
µm/N
Equivalent volume to CMSVAS
L
Mechanical resistanceRMS
N·s/m

Dimensions

Overall size
mm
Baffle cutout diameter
mm
Overall depth
mm
Mounting depth
mm
Volume occupied
L
Net weight
kg
Black Hydra HDC-2.25 Mid Bass

Black Hydra HDC-2.25

4 Ω
6.5Mid Bass
fS59.4 Hz
SD201 cm²
QTS0.50
SPL1W92.1 dB
Bl/√RE3.01
Pmax135 W
Black Hydra HBC-3.28 Mid Bass

Black Hydra HBC-3.28

4 Ω
6.5Mid Bass
fS61.8 Hz
SD189 cm²
QTS0.47
SPL1W91.9 dB
Bl/√RE3.18
Pmax150 W