accuton AS168-9-470

• Sensitivity (1W, 1m, infinite baffle) SPL1W 84.4dB

Thiele & Small parameters

• Resonance frequency (free air) fS 27Hz
• Mechanical quality factor QMS 4.35
• Electrical quality factor QES 0.38
• Total quality factor QTS 0.35

Large signal parameters

• Maximum linear excursion xmax 8mm
• Air volume displaced at xmax VD 129cm³
• Power handling P 250W
• Program power Pmax 500W

Voice Coil

• Nominal impedance Z 8Ω
• DC resistance RE 9.0Ω
• Inductance (1kHz) LE 1mH
• VC Diameter 47mm
• Winding material Copper Clad Aluminium
• Former material Titanium

Magnet

• Force factor Bl 12.1N/A
• Motor constant Bl/√RE 4.03N/√W
• Diameter 135mm
• Height 43mm

Diaphragm

• Effective diameter 143mm
• Effective area SD 161cm²
• Moving mass MMS 36g
• Moving mass (without air load) MMD 34.6g
• Material Aluminium-Sandwich

Suspensions

• Stiffness KMS 1.03N/mm
• Compliance CMS 970µm/N
• Equivalent volume to the compliance VAS 35.5L
• Mechanical resistance RMS 1.4N·s/m

Dimensions

• Nominal diameter 7″
• 168mm
• Overall diameter 168mm
• Baffle cutout diameter 148mm
• Overall depth 118mm
• Flange thickness 16mm
• Mounting depth 102mm
• Volume occupied by the driver (estimated) 0.82L