Ciare HW251N

• Sensitivity (1W, 1m, infinite baffle) SPL1W 89.9dB

Thiele & Small parameters

• Resonance frequency (free air) fS 30Hz
• Mechanical quality factor QMS 5.55
• Electrical quality factor QES 0.38
• Total quality factor QTS 0.35

Large signal parameters

• Maximum linear excursion xmax 5.7mm
• Air volume displaced at xmax VD 197cm³
• Power handling P 120W
• Program power Pmax 240W

Voice Coil

• Nominal impedance Z 8Ω
• DC resistance RE 6.5Ω
• Inductance (1kHz) LE 1.75mH
• VC Diameter 38mm
• Winding height HVC 15.3mm
• Former material Aluminum

Magnet

• Force factor Bl 13N/A
• Motor constant Bl/√RE 5.11N/√W
• Air gap height HAG 8mm

Diaphragm

• Effective diameter 210mm
• Effective area SD 346cm²
• Moving mass MMS 50.8g
• Moving mass (without air load) MMD 46g

Suspensions

• Stiffness KMS 1.92N/mm
• Compliance CMS 520µm/N
• Equivalent volume to the compliance VAS 88L
• Mechanical resistance RMS 1.72N·s/m
• Surround material Rubber

Dimensions

• Nominal diameter 10″
• 250mm
• Overall diameter 268mm
• Baffle cutout diameter 232mm
• Overall depth 113mm
• Flange thickness 5mm
• Mounting depth 108mm
• Volume occupied by the driver (estimated) 1.3L
• Net weight 2.8kg
• Frame material Aluminium