Aurum Cantus AC120/50CK

• Sensitivity (1W, 1m, infinite baffle) SPL1W 88.3dB
• Frequency response 43 - 7000Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 43Hz
• Mechanical quality factor QMS 3.40
• Electrical quality factor QES 0.19
• Total quality factor QTS 0.18

Large signal parameters

• Maximum linear excursion xmax 6mm
• Air volume displaced at xmax VD 49cm³
• Power handling P 150W
• Program power Pmax 300W

Voice Coil

• Nominal impedance Z 8Ω
• DC resistance RE 7.0Ω
• Inductance (1kHz) LE 0.67mH
• VC Diameter 50mm
• Winding height HVC 15mm

Magnet

• Flux density B 0.93T
• Force factor Bl 10.6N/A
• Motor constant Bl/√RE 4.01N/√W
• Diameter 120mm
• Height 20mm

Diaphragm

• Effective diameter 102mm
• Effective area SD 82cm²
• Moving mass MMS 11.5g
• Moving mass (without air load) MMD 10.9g

Suspensions

• Stiffness KMS 0.826N/mm
• Compliance CMS 1210µm/N
• Equivalent volume to the compliance VAS 12L
• Mechanical resistance RMS 0.91N·s/m

Dimensions

• Nominal diameter 4.5″
• 120mm
• Overall diameter 150mm
• Baffle cutout diameter 124mm
• Overall depth 81mm
• Flange thickness 6mm
• Mounting depth 75mm
• Volume occupied by the driver (estimated) 0.63L
• Net weight 2.38kg
• Frame material Aluminum