Aurum Cantus AC300/75C2C

• Sensitivity (1W, 1m, infinite baffle) SPL1W 88.5dB
• Frequency response 22 - 2800Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 22Hz
• Mechanical quality factor QMS 2.16
• Electrical quality factor QES 0.42
• Total quality factor QTS 0.35

Large signal parameters

• Maximum linear excursion xmax 8mm
• Air volume displaced at xmax VD 400cm³
• Power handling P 250W
• Program power Pmax 500W

Voice Coil

• Nominal impedance Z 8Ω
• DC resistance RE 7.0Ω
• Inductance (1kHz) LE 1.31mH
• VC Diameter 75mm
• Winding height HVC 17mm

Magnet

• Flux density B 0.81T
• Force factor Bl 13.2N/A
• Motor constant Bl/√RE 4.99N/√W
• Diameter 170mm
• Height 22mm

Diaphragm

• Effective diameter 252mm
• Effective area SD 500cm²
• Moving mass MMS 84g
• Moving mass (without air load) MMD 75.5g

Suspensions

• Stiffness KMS 1.54N/mm
• Compliance CMS 650µm/N
• Equivalent volume to the compliance VAS 232L
• Mechanical resistance RMS 5.38N·s/m

Dimensions

• Nominal diameter 12″
• 300mm
• Overall diameter 330mm
• Baffle cutout diameter 285mm
• Overall depth 142mm
• Flange thickness 5mm
• Mounting depth 137mm
• Volume occupied by the driver (estimated) 2.7L
• Net weight 5.7kg
• Frame material Aluminum