Down4Sound DBz8D2

2x2Ω

Subwoofer

Nominal diameter	8″ / 221 mm
Resonance	45 Hz
Q factor	0.46
Sensitivity	80.9 dB
Linear excursion	± 21 mm
Program Power	1400 W

Down4Sound DBz8D2 Subwoofer

Specifications

Sensitivity (1W, 1m, infinite baffle) SPL1W 80.9dB

Thiele & Small parameters

Resonance frequency (free air) fS 45Hz
Mechanical quality factor QMS 2.44
Electrical quality factor QES 0.57
Total quality factor QTS 0.46

Large signal parameters

Maximum linear excursion (one way) xmax 21mm
Air volume displaced at xmax VD 420cm³
Power handling P 700W
Program power Pmax 1400W

Voice Coil

Nominal impedance Z 2 x 2Ω
DC resistance (in series) RE 4.0Ω
Inductance (1kHz, in series, estimated) LE 2.81mH
VC Diameter 63.5mm

Magnet

Force factor (in series) Bl 18.9N/A
Motor constant Bl/√RE 9.46N/√W
Diameter 186mm

Diaphragm

Effective diameter 160mm
Effective area SD 200cm²
Moving mass MMS 180g
Moving mass (without air load) MMD 178g

Suspensions

Stiffness KMS 14.4N/mm
Compliance CMS 69.7µm/N
Equivalent volume to the compliance VAS 3.99L
Mechanical resistance RMS 0.757N·s/m

Dimensions

Nominal diameter 8″
221mm
Overall diameter 221mm
Baffle cutout diameter 186mm
Mounting depth 168mm
Volume occupied by the driver 3.68L
Net weight 10.7kg

Export this driver to a simulation software:

Closed Box Simulator·

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