Peerless TC8FD02-04

• Sensitivity (1W, 1m, infinite baffle) SPL1W 86.4dB
• Frequency response 120 - 20000Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 170Hz
• Mechanical quality factor QMS 3.79
• Electrical quality factor QES 1.16
• Total quality factor QTS 0.89

Large signal parameters

• Maximum linear excursion xmax 1.6mm
• Air volume displaced at xmax VD 5.3cm³
• Power handling P 25W
• Program power Pmax 50W

Voice Coil

• Nominal impedance Z 4Ω
• DC resistance RE 2.8Ω
• Inductance (1kHz) LE 0.02mH
• VC Diameter 19.4mm
• Former material Aluminium

Magnet

• Force factor Bl 2.4N/A
• Motor constant Bl/√RE 1.43N/√W
• Air gap height HAG 4mm

Diaphragm

• Effective diameter 65mm
• Effective area SD 33.2cm²
• Moving mass MMS 2.2g
• Moving mass (without air load) MMD 2.1g

Suspensions

• Stiffness KMS 2.53N/mm
• Compliance CMS 395µm/N
• Equivalent volume to the compliance VAS 0.61L
• Mechanical resistance RMS 0.62N·s/m

Dimensions

• Nominal diameter 3″
• 76mm
• Volume occupied by the driver (estimated) 0.12L
• Net weight 0.33kg