SB Acoustics SB17MFC35-4

• Sensitivity (1W, 1m, infinite baffle) SPL1W 87.7dB

Thiele & Small parameters

• Resonance frequency (free air) fS 30Hz
• Mechanical quality factor QMS 5.20
• Electrical quality factor QES 0.30
• Total quality factor QTS 0.28

Large signal parameters

• Maximum linear excursion xmax 5.5mm
• Air volume displaced at xmax VD 65cm³
• Power handling P 60W
• Program power Pmax 120W

Voice Coil

• Nominal impedance Z 4Ω
• DC resistance RE 3.1Ω
• Inductance (1kHz) LE 0.13mH
• VC Diameter 35.5mm
• Winding height HVC 16mm
• Winding material Copper Clad Aluminium
• Former material Glass Fiber

Magnet

• Flux density B 1T
• Force factor Bl 4.9N/A
• Motor constant Bl/√RE 2.78N/√W
• Air gap height HAG 5mm
• Weight 0.54kg

Diaphragm

• Effective diameter 123mm
• Effective area SD 118cm²
• Moving mass MMS 12.3g
• Moving mass (without air load) MMD 11.4g
• Material Polypropylene

Suspensions

• Stiffness KMS 0.437N/mm
• Compliance CMS 2290µm/N
• Equivalent volume to the compliance VAS 45L
• Mechanical resistance RMS 0.45N·s/m
• Surround material Rubber

Dimensions

• Nominal diameter 6″
• 152mm
• Volume occupied by the driver (estimated) 0.63L
• Net weight 1.55kg
• Frame material Cast aluminium