Aurum Cantus AC250/75C2C

• Sensitivity (1W, 1m, infinite baffle) SPL1W 86.8dB
• Frequency response 23 - 3000Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 23Hz
• Mechanical quality factor QMS 1.95
• Electrical quality factor QES 0.32
• Total quality factor QTS 0.28

Large signal parameters

• Maximum linear excursion xmax 8mm
• Air volume displaced at xmax VD 277cm³
• 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 11.4N/A
• Motor constant Bl/√RE 4.31N/√W
• Diameter 170mm
• Height 22mm

Diaphragm

• Effective diameter 210mm
• Effective area SD 346cm²
• Moving mass MMS 61.3g
• Moving mass (without air load) MMD 56.4g

Suspensions

• Stiffness KMS 0.909N/mm
• Compliance CMS 1100µm/N
• Equivalent volume to the compliance VAS 193L
• Mechanical resistance RMS 4.54N·s/m

Dimensions

• Nominal diameter 10″
• 250mm
• Overall diameter 278mm
• Baffle cutout diameter 235mm
• Overall depth 124mm
• Flange thickness 5mm
• Mounting depth 119mm
• Volume occupied by the driver (estimated) 2.1L
• Net weight 5.45kg
• Frame material Aluminum