SB Acoustics SB17NRX2L35-4

• Sensitivity (1W, 1m, infinite baffle) SPL1W 89.3dB

Thiele & Small parameters

• Resonance frequency (free air) fS 41Hz
• Mechanical quality factor QMS 4.97
• Electrical quality factor QES 0.26
• Total quality factor QTS 0.25

Large signal parameters

• Maximum linear excursion xmax 4.8mm
• Air volume displaced at xmax VD 57cm³
• Power handling P 60W
• Program power Pmax 120W

Voice Coil

• Nominal impedance Z 4Ω
• DC resistance RE 3.1Ω
• Inductance (1kHz) LE 0.14mH
• VC Diameter 35.5mm
• Winding height HVC 15.6mm
• Winding material Copper Clad Aluminium
• Former material Glass Fiber

Magnet

• Flux density B 1.1T
• Force factor Bl 6.45N/A
• Motor constant Bl/√RE 3.66N/√W
• Air gap height HAG 6mm
• Weight 0.89kg

Diaphragm

• Effective diameter 123mm
• Effective area SD 118cm²
• Moving mass MMS 13.5g
• Moving mass (without air load) MMD 12.6g
• Material Natural fibers (made in-house)

Suspensions

• Stiffness KMS 0.909N/mm
• Compliance CMS 1100µm/N
• Equivalent volume to the compliance VAS 21.9L
• Mechanical resistance RMS 0.7N·s/m
• Surround material Rubber

Dimensions

• Nominal diameter 6″
• 152mm
• Volume occupied by the driver (estimated) 0.96L
• Net weight 2.32kg
• Frame material Cast aluminium