Peerless PLS-50F25AL03-04

• Sensitivity (1W, 1m, infinite baffle) SPL1W 82.6dB
• Frequency response 150 - 20000Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 210Hz
• Mechanical quality factor QMS 6.82
• Electrical quality factor QES 1.30
• Total quality factor QTS 1.10

Large signal parameters

• Maximum linear excursion xmax 2.7mm
• Air volume displaced at xmax VD 4cm³
• Power handling P 10W
• Program power Pmax 20W

Voice Coil

• Nominal impedance Z 4Ω
• DC resistance RE 3.4Ω
• Inductance (1kHz) LE 0.039mH
• VC Diameter 25.7mm

Magnet

• Force factor Bl 2.38N/A
• Motor constant Bl/√RE 1.29N/√W
• Air gap height HAG 3mm
• Material Ferrite

Diaphragm

• Effective diameter 44mm
• Effective area SD 15.2cm²
• Moving mass MMS 1.64g
• Moving mass (without air load) MMD 1.6g
• Material Aluminum

Suspensions

• Stiffness KMS 2.78N/mm
• Compliance CMS 360µm/N
• Equivalent volume to the compliance VAS 0.167L
• Mechanical resistance RMS 0.32N·s/m
• Surround material Rubber

Dimensions

• Nominal diameter 2″
• 51mm
• Volume occupied by the driver (estimated) 0.12L
• Net weight 0.32kg
• Frame material Pressed Steel