SB Acoustics SW26DBAC76-8

• Sensitivity (1W, 1m, infinite baffle) SPL1W 83.1dB

Thiele & Small parameters

• Resonance frequency (free air) fS 19.5Hz
• Mechanical quality factor QMS 4.40
• Electrical quality factor QES 0.29
• Total quality factor QTS 0.28

Large signal parameters

• Maximum linear excursion xmax 12mm
• Air volume displaced at xmax VD 374cm³
• Power handling P 250W
• Program power Pmax 500W

Voice Coil

• Nominal impedance Z 8Ω
• DC resistance RE 6.4Ω
• Inductance (1kHz, estimated) LE 4.37mH
• VC Diameter 75.5mm
• Winding height HVC 30mm
• Winding material Copper
• Former material Glass Fiber

Magnet

• Flux density B 1T
• Force factor Bl 21.4N/A
• Motor constant Bl/√RE 8.46N/√W
• Air gap height HAG 6mm
• Weight 0.281kg
• Material Neodymium

Diaphragm

• Effective diameter 199mm
• Effective area SD 312cm²
• Moving mass MMS 172g
• Moving mass (without air load) MMD 168g
• Material Aluminium

Suspensions

• Stiffness KMS 2.56N/mm
• Compliance CMS 390µm/N
• Equivalent volume to the compliance VAS 54L
• Mechanical resistance RMS 4.8N·s/m

Dimensions

• Nominal diameter 10″
• 254mm
• Volume occupied by the driver (estimated) 1.5L
• Net weight 3.43kg
• Frame material Cast aluminium