accuton CL220-6-321

• Sensitivity (1W, 1m, infinite baffle) SPL1W 89.4dB
• Frequency response 40 - 2500Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 27.2Hz
• Mechanical quality factor QMS 6.50
• Electrical quality factor QES 0.35
• Total quality factor QTS 0.34

Large signal parameters

• Maximum linear excursion xmax 4mm
• Air volume displaced at xmax VD 91cm³
• Power handling P 120W
• Program power Pmax 240W

Voice Coil

• Nominal impedance Z 11Ω
• DC resistance RE 10.2Ω
• Inductance (1kHz) LE 0.17mH
• VC Diameter 114mm
• Winding material Copper
• Former material Titanium

Magnet

• Force factor Bl 10.3N/A
• Motor constant Bl/√RE 3.22N/√W
• Diameter 120mm
• Height 42mm

Diaphragm

• Effective diameter 170mm
• Effective area SD 227cm²
• Moving mass MMS 25.3g
• Moving mass (without air load) MMD 22.7g
• Material Crystalid

Suspensions

• Stiffness KMS 0.735N/mm
• Compliance CMS 1360µm/N
• Equivalent volume to the compliance VAS 99.1L
• Mechanical resistance RMS 0.66N·s/m

Dimensions

• Nominal diameter 8″
• 220mm
• Baffle cutout diameter 191mm
• Overall depth 114mm
• Flange thickness 9mm
• Mounting depth 105mm
• Volume occupied by the driver (estimated) 1.4L