Peerless TC9FD00-04

• Sensitivity (1W, 1m, infinite baffle) SPL1W 87.7dB
• Frequency response 250 - 10000Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 170Hz
• Mechanical quality factor QMS 4.78
• Electrical quality factor QES 1.33
• Total quality factor QTS 1.00

Large signal parameters

• Maximum linear excursion xmax 2.9mm
• Air volume displaced at xmax VD 11cm³
• Power handling P 25W
• Program power Pmax 50W

Voice Coil

• Nominal impedance Z 4Ω
• DC resistance RE 3.1Ω
• Inductance (1kHz) LE 0.057mH
• VC Diameter 19.4mm

Magnet

• Force factor Bl 2.33N/A
• Motor constant Bl/√RE 1.32N/√W
• Air gap height HAG 4mm
• Material Ferrite

Diaphragm

• Effective diameter 68mm
• Effective area SD 36.3cm²
• Moving mass MMS 2.14g
• Moving mass (without air load) MMD 2g
• Material Patented PentaCut

Suspensions

• Stiffness KMS 2.5N/mm
• Compliance CMS 400µm/N
• Equivalent volume to the compliance VAS 0.737L
• Mechanical resistance RMS 0.48N·s/m
• Surround material Fabric

Dimensions

• Nominal diameter 3.5″
• 89mm
• Volume occupied by the driver (estimated) 0.14L
• Net weight 0.38kg
• Frame material Pressed Steel