Aurum Cantus AC-250SW

• Sensitivity (1W, 1m, infinite baffle) SPL1W 84.1dB
• Frequency response 35 - 2500Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 35Hz
• Mechanical quality factor QMS 2.35
• Electrical quality factor QES 0.56
• Total quality factor QTS 0.45

Large signal parameters

• Maximum linear excursion xmax 8mm
• Air volume displaced at xmax VD 264cm³
• Power handling P 180W
• Program power Pmax 360W

Voice Coil

• Nominal impedance Z 4Ω
• DC resistance RE 3.6Ω
• Inductance (1kHz) LE 0.84mH
• VC Diameter 65mm
• Winding height HVC 20mm

Magnet

• Flux density B 0.81T
• Force factor Bl 10.1N/A
• Motor constant Bl/√RE 5.32N/√W
• Diameter 170mm
• Height 22mm

Diaphragm

• Effective diameter 205mm
• Effective area SD 330cm²
• Moving mass MMS 101g
• Moving mass (without air load) MMD 96.6g

Suspensions

• Stiffness KMS 3.7N/mm
• Compliance CMS 270µm/N
• Equivalent volume to the compliance VAS 42L
• Mechanical resistance RMS 9.45N·s/m

Dimensions

• Nominal diameter 10″
• 250mm
• Overall diameter 260mm
• Baffle cutout diameter 242mm
• Overall depth 134mm
• Flange thickness 8mm
• Mounting depth 126mm
• Volume occupied by the driver (estimated) 2.1L
• Net weight 5.5kg
• Frame material Aluminum