Ciare PW258ND

• Sensitivity (1W, 1m, infinite baffle) SPL1W 95.8dB
• Frequency response 60 - 5000Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 63Hz
• Mechanical quality factor QMS 9.12
• Electrical quality factor QES 0.37
• Total quality factor QTS 0.36

Large signal parameters

• Maximum linear excursion xmax 8mm
• Air volume displaced at xmax VD 278cm³
• Power handling P 300W
• Program power Pmax 600W

Voice Coil

• Nominal impedance Z 8Ω
• DC resistance RE 6.6Ω
• Inductance (1kHz) LE 0.02mH
• VC Diameter 75mm
• Winding material Aluminium
• Former material Aluminium

Magnet

• Force factor Bl 17.1N/A
• Motor constant Bl/√RE 6.66N/√W
• Air gap height HAG 10mm
• Material Neodymium

Diaphragm

• Effective diameter 211mm
• Effective area SD 347cm²
• Moving mass MMS 39.8g
• Moving mass (without air load) MMD 35g

Suspensions

• Stiffness KMS 6.67N/mm
• Compliance CMS 150µm/N
• Equivalent volume to the compliance VAS 25.7L
• Mechanical resistance RMS 1.73N·s/m
• Surround material Nomex

Dimensions

• Nominal diameter 10″
• 250mm
• Overall diameter 268mm
• Baffle cutout diameter 235mm
• Overall depth 119mm
• Flange thickness 13mm
• Mounting depth 106mm
• Volume occupied by the driver (estimated) 1.5L
• Frame material Aluminium