VOLT BM165.4

8Ω

Woofer

Nominal diameter	6.5″ / 165 mm
Resonance	32 Hz
Q factor	0.30
Sensitivity	87.2 dB
Linear excursion	± 6 mm
Program Power	200 W

VOLT BM165.4 Woofer

Specifications

Sensitivity (1W, 1m, infinite baffle) SPL1W 87.2dB
Frequency response 50 - 3000Hz

Thiele & Small parameters

Resonance frequency (free air) fS 32Hz
Mechanical quality factor QMS 5.57
Electrical quality factor QES 0.32
Total quality factor QTS 0.30

Large signal parameters

Maximum linear excursion xmax 6mm
Maximum excursion before damage xlim 12mm
Air volume displaced at xmax VD 92cm³
Power handling P 100W
Program power Pmax 200W

Voice Coil

Nominal impedance Z 8Ω
DC resistance RE 5.6Ω
Inductance (1kHz) LE 0.65mH
VC Diameter 38mm
Winding height HVC 17.5mm

Magnet

Force factor Bl 9.6N/A
Motor constant Bl/√RE 4.06N/√W
Air gap height HAG 5.5mm
Diameter 100mm

Diaphragm

Effective diameter 140mm
Effective area SD 154cm²
Moving mass MMS 25g
Moving mass (without air load) MMD 23.5g
Material Doped Paper Pulp

Suspensions

Stiffness KMS 1.04N/mm
Compliance CMS 960µm/N
Equivalent volume to the compliance VAS 32.3L
Mechanical resistance RMS 0.91N·s/m

Dimensions

Nominal diameter 6.5″
165mm
Overall diameter 189mm
Baffle cutout diameter 163mm
Overall depth 90mm
Flange thickness 6mm
Mounting depth 84mm
Volume occupied by the driver 0.7L
Net weight 1.95kg
Frame material Diecast Aluminium

VOLT BM165.4 SPL & Impedance

VOLT BM165.4 Dimensions

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Closed Box Simulator·

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fS	30 Hz
SD	154 cm²
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SPL1W	87.4 dB
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