LaVoce NBASS12-30

• Sensitivity (1W, 1m, infinite baffle) SPL1W 94.9dB
• Frequency response 50 - 3000Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 46Hz
• Mechanical quality factor QMS 9.49
• Electrical quality factor QES 0.29
• Total quality factor QTS 0.28

Large signal parameters

• Maximum linear excursion xmax 4mm
• Maximum excursion before damage xlim 12.5mm
• Air volume displaced at xmax VD 212cm³
• Power handling P 400W
• Program power Pmax 800W

Voice Coil

• Nominal impedance Z 8Ω
• DC resistance RE 5.4Ω
• Inductance (1kHz) LE 1mH
• VC Diameter 75mm
• Winding height HVC 18.5mm
• Winding material Copper
• Former material Glass fiber

Magnet

• Force factor Bl 19.2N/A
• Motor constant Bl/√RE 8.24N/√W
• Air gap height HAG 10.5mm
• Diameter 74mm
• Height 9mm
• Material Neodymium

Diaphragm

• Effective diameter 260mm
• Effective area SD 531cm²
• Moving mass MMS 68.7g
• Moving mass (without air load) MMD 60.3g
• Material Water Resistant Treated Paper

Suspensions

• Stiffness KMS 5.78N/mm
• Compliance CMS 173µm/N
• Equivalent volume to the compliance VAS 68.9L
• Mechanical resistance RMS 2.09N·s/m
• Surround material Polycotton

Dimensions

• Nominal diameter 12″
• 300mm
• Volume occupied by the driver 2.1L
• Net weight 2.9kg
• Frame material Steel