SB Acoustics SB34SWPL76-4

• Sensitivity (1W, 1m, infinite baffle) SPL1W 84.1dB

Thiele & Small parameters

• Resonance frequency (free air) fS 19Hz
• Mechanical quality factor QMS 7.70
• Electrical quality factor QES 0.33
• Total quality factor QTS 0.32

Large signal parameters

• Maximum linear excursion xmax 15mm
• Air volume displaced at xmax VD 687cm³
• Power handling P 300W
• Program power Pmax 600W

Voice Coil

• Nominal impedance Z 4Ω
• DC resistance RE 3.5Ω
• Inductance (1kHz) LE 5.3mH
• VC Diameter 76mm
• Winding height HVC 38mm
• Winding material Copper
• Former material Glass Fiber

Magnet

• Flux density B 0.62T
• Force factor Bl 18.3N/A
• Motor constant Bl/√RE 9.78N/√W
• Air gap height HAG 8mm
• Weight 2.4kg

Diaphragm

• Effective diameter 241mm
• Effective area SD 458cm²
• Moving mass MMS 264g
• Moving mass (without air load) MMD 257g
• Material Paper

Suspensions

• Stiffness KMS 3.7N/mm
• Compliance CMS 270µm/N
• Equivalent volume to the compliance VAS 79L
• Mechanical resistance RMS 4.1N·s/m
• Surround material Rubber

Dimensions

• Nominal diameter 12″
• 305mm
• Volume occupied by the driver (estimated) 3.4L
• Net weight 7.68kg
• Frame material Cast aluminium