Fostex C045A8

• Sensitivity (1W, 1m, infinite baffle) SPL1W 84.6dB
• Frequency response 320 - 40000Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 320Hz
• Mechanical quality factor QMS 5.10
• Electrical quality factor QES 2.70
• Total quality factor QTS 1.78

Large signal parameters

• Power handling P 5W
• Program power Pmax 10W

Voice Coil

• Nominal impedance Z 8Ω
• DC resistance RE 7.5Ω
• Inductance (1kHz) LE 0.07mH

Magnet

• Force factor Bl 2N/A
• Motor constant Bl/√RE 0.73N/√W

Diaphragm

• Effective diameter 68mm
• Effective area SD 10.5cm²
• Moving mass MMS 0.79g
• Moving mass (without air load) MMD 0.8g

Suspensions

• Stiffness KMS 3.13N/mm
• Compliance CMS 320µm/N
• Equivalent volume to the compliance VAS 0.05L
• Mechanical resistance RMS 0.31N·s/m

Dimensions

• Nominal diameter 2″
• 45mm
• Baffle cutout diameter 44mm
• Net weight 0.031kg