accuton AS250-8-552

• Sensitivity (1W, 1m, infinite baffle) SPL1W 86.5dB

Thiele & Small parameters

• Resonance frequency (free air) fS 22Hz
• Mechanical quality factor QMS 5.00
• Electrical quality factor QES 0.38
• Total quality factor QTS 0.40

Large signal parameters

• Maximum linear excursion xmax 9mm
• Air volume displaced at xmax VD 344cm³
• Power handling P 300W
• Program power Pmax 600W

Voice Coil

• Nominal impedance Z 8Ω
• DC resistance RE 7.3Ω
• Inductance (1kHz) LE 0.67mH
• VC Diameter 114mm
• Winding material Copper
• Former material Titanium

Magnet

• Force factor Bl 15.1N/A
• Motor constant Bl/√RE 5.59N/√W
• Diameter 210mm
• Height 57mm

Diaphragm

• Effective diameter 221mm
• Effective area SD 382cm²
• Moving mass MMS 92g
• Moving mass (without air load) MMD 87g
• Material Aluminium-Sandwich

Suspensions

• Stiffness KMS 1.75N/mm
• Compliance CMS 570µm/N
• Equivalent volume to the compliance VAS 119L
• Mechanical resistance RMS 2.52N·s/m

Dimensions

• Nominal diameter 11″
• 250mm
• Overall diameter 250mm
• Baffle cutout diameter 230mm
• Overall depth 141mm
• Flange thickness 18mm
• Mounting depth 123mm
• Volume occupied by the driver (estimated) 1.8L