Peerless TC8FD05-04

• Sensitivity (1W, 1m, infinite baffle) SPL1W 86.5dB
• Frequency response 100 - 20000Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 170Hz
• Mechanical quality factor QMS 4.55
• Electrical quality factor QES 1.19
• Total quality factor QTS 0.95

Large signal parameters

• Maximum linear excursion xmax 2.7mm
• Air volume displaced at xmax VD 9.1cm³
• Power handling P 25W
• Program power Pmax 50W

Voice Coil

• Nominal impedance Z 4Ω
• DC resistance RE 3.0Ω
• Inductance (1kHz) LE 0.059mH
• VC Diameter 19.4mm

Magnet

• Force factor Bl 2.53N/A
• Motor constant Bl/√RE 1.46N/√W
• Air gap height HAG 4mm
• Material Ferrite

Diaphragm

• Effective diameter 65mm
• Effective area SD 33.2cm²
• Moving mass MMS 2.33g
• Moving mass (without air load) MMD 2.2g

Suspensions

• Stiffness KMS 2.7N/mm
• Compliance CMS 370µm/N
• Equivalent volume to the compliance VAS 0.574L
• Mechanical resistance RMS 0.55N·s/m
• Surround material Fabric

Dimensions

• Nominal diameter 3″
• 76mm
• Volume occupied by the driver (estimated) 0.15L
• Net weight 0.4kg
• Frame material Pressed Steel