SB Acoustics SB23CACS45-4

• Sensitivity (1W, 1m, infinite baffle) SPL1W 86.8dB

Thiele & Small parameters

• Resonance frequency (free air) fS 23Hz
• Mechanical quality factor QMS 6.00
• Electrical quality factor QES 0.35
• Total quality factor QTS 0.33

Large signal parameters

• Maximum linear excursion xmax 6.5mm
• Air volume displaced at xmax VD 140cm³
• Power handling P 60W
• Program power Pmax 120W

Voice Coil

• Nominal impedance Z 4Ω
• DC resistance RE 3.3Ω
• Inductance (1kHz) LE 0.27mH
• VC Diameter 45.5mm
• Winding height HVC 19mm
• Winding material Copper Clad Aluminium
• Former material Glass Fiber

Magnet

• Flux density B 0.86T
• Force factor Bl 6.7N/A
• Motor constant Bl/√RE 3.69N/√W
• Air gap height HAG 6mm
• Weight 0.8kg

Diaphragm

• Effective diameter 166mm
• Effective area SD 216cm²
• Moving mass MMS 33g
• Moving mass (without air load) MMD 30.7g
• Material Ceramic

Suspensions

• Stiffness KMS 0.699N/mm
• Compliance CMS 1430µm/N
• Equivalent volume to the compliance VAS 95L
• Mechanical resistance RMS 0.8N·s/m
• Surround material Rubber

Dimensions

• Nominal diameter 8″
• 203mm
• Volume occupied by the driver (estimated) 1.1L
• Net weight 2.7kg
• Frame material Cast aluminium