Peerless TPY04W04O0016ES

• Sensitivity (1W, 1m, infinite baffle) SPL1W 86.1dB
• Frequency response 60 - 4000Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 65Hz
• Mechanical quality factor QMS 2.79
• Electrical quality factor QES 0.45
• Total quality factor QTS 0.38

Large signal parameters

• Maximum linear excursion xmax 4.6mm
• Air volume displaced at xmax VD 28cm³
• Power handling P 35W
• Program power Pmax 70W

Voice Coil

• Nominal impedance Z 4Ω
• DC resistance RE 3.1Ω
• Inductance (1kHz) LE 0.27mH
• VC Diameter 25.8mm
• Former material Aluminium

Magnet

• Force factor Bl 4.42N/A
• Motor constant Bl/√RE 2.52N/√W
• Air gap height HAG 4mm

Diaphragm

• Effective diameter 88mm
• Effective area SD 60.8cm²
• Moving mass MMS 6.9g
• Moving mass (without air load) MMD 6.6g

Suspensions

• Stiffness KMS 1.16N/mm
• Compliance CMS 865µm/N
• Equivalent volume to the compliance VAS 4.49L
• Mechanical resistance RMS 1.01N·s/m

Dimensions

• Nominal diameter 4″
• 102mm
• Volume occupied by the driver (estimated) 0.24L
• Net weight 0.62kg