accuton S220-6-222

• Sensitivity (1W, 1m, infinite baffle) SPL1W 88.8dB

Thiele & Small parameters

• Resonance frequency (free air) fS 25Hz
• Mechanical quality factor QMS 3.83
• Electrical quality factor QES 0.27
• Total quality factor QTS 0.26

Large signal parameters

• Maximum linear excursion xmax 5.3mm
• Air volume displaced at xmax VD 118cm³
• Power handling P 150W
• Program power Pmax 300W

Voice Coil

• Nominal impedance Z 8Ω
• DC resistance RE 6.5Ω
• Inductance (1kHz) LE 0.36mH
• VC Diameter 55mm
• Winding material Copper
• Former material Titanium

Magnet

• Force factor Bl 11N/A
• Motor constant Bl/√RE 4.29N/√W
• Diameter 120mm
• Height 50mm

Diaphragm

• Effective diameter 169mm
• Effective area SD 224cm²
• Moving mass MMS 32.2g
• Moving mass (without air load) MMD 29.6g

Suspensions

• Stiffness KMS 0.794N/mm
• Compliance CMS 1260µm/N
• Equivalent volume to the compliance VAS 89.7L
• Mechanical resistance RMS 1.32N·s/m

Dimensions

• Nominal diameter 8.5″
• 220mm
• Overall diameter 220mm
• Baffle cutout diameter 191mm
• Overall depth 113mm
• Flange thickness 9mm
• Mounting depth 104mm
• Volume occupied by the driver (estimated) 1.1L