SB Acoustics SB34NRX75-16

• Sensitivity (1W, 1m, infinite baffle) SPL1W 87.6dB

Thiele & Small parameters

• Resonance frequency (free air) fS 25Hz
• Mechanical quality factor QMS 6.65
• Electrical quality factor QES 0.80
• Total quality factor QTS 0.71

Large signal parameters

• Maximum linear excursion xmax 11mm
• Air volume displaced at xmax VD 559cm³
• Power handling P 120W
• Program power Pmax 240W

Voice Coil

• Nominal impedance Z 16Ω
• DC resistance RE 14.0Ω
• Inductance (1kHz) LE 3.2mH
• VC Diameter 75.6mm
• Winding height HVC 28mm
• Winding material Copper Clad Aluminium

Magnet

• Flux density B 0.9T
• Force factor Bl 14.1N/A
• Motor constant Bl/√RE 3.77N/√W
• Air gap height HAG 6mm
• Weight 2.1kg

Diaphragm

• Effective diameter 254mm
• Effective area SD 508cm²
• Moving mass MMS 72g
• Moving mass (without air load) MMD 63.9g
• Material Norex

Suspensions

• Stiffness KMS 1.79N/mm
• Compliance CMS 560µm/N
• Equivalent volume to the compliance VAS 205L
• Mechanical resistance RMS 1.7N·s/m

Dimensions

• Nominal diameter 12″
• 305mm
• Volume occupied by the driver (estimated) 2.6L
• Net weight 6.0kg
• Frame material Cast aluminium