accuton C220-6-227

• Sensitivity (1W, 1m, infinite baffle) SPL1W 88.5dB

Thiele & Small parameters

• Resonance frequency (free air) fS 27Hz
• Mechanical quality factor QMS 5.96
• Electrical quality factor QES 0.34
• Total quality factor QTS 0.32

Large signal parameters

• Maximum linear excursion xmax 6mm
• Air volume displaced at xmax VD 134cm³
• Power handling P 120W
• Program power Pmax 240W

Voice Coil

• Nominal impedance Z 8Ω
• DC resistance RE 5.6Ω
• Inductance (1kHz) LE 0.23mH
• VC Diameter 55mm
• Winding material Copper
• Former material Titanium

Magnet

• Force factor Bl 9.3N/A
• Motor constant Bl/√RE 3.93N/√W
• Diameter 87mm
• Height 46mm

Diaphragm

• Effective diameter 169mm
• Effective area SD 224cm²
• Moving mass MMS 31.2g
• Moving mass (without air load) MMD 28.7g
• Material Ceramic

Suspensions

• Stiffness KMS 0.893N/mm
• Compliance CMS 1120µm/N
• Equivalent volume to the compliance VAS 79.6L
• Mechanical resistance RMS 0.89N·s/m

Dimensions

• Nominal diameter 8″
• 220mm
• Overall diameter 220mm
• Baffle cutout diameter 191mm
• Overall depth 109mm
• Flange thickness 9mm
• Mounting depth 100mm
• Volume occupied by the driver (estimated) 1.1L