Peerless SLS-65S25PR03-04

• Sensitivity (1W, 1m, infinite baffle) SPL1W 80.6dB
• Frequency response 80 - 5000Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 94Hz
• Mechanical quality factor QMS 5.81
• Electrical quality factor QES 0.61
• Total quality factor QTS 0.55

Large signal parameters

• Maximum linear excursion xmax 4.3mm
• Air volume displaced at xmax VD 9.6cm³
• Power handling P 10W
• Program power Pmax 20W

Voice Coil

• Nominal impedance Z 4Ω
• DC resistance RE 3.8Ω
• Inductance (1kHz) LE 0.247mH
• VC Diameter 25.7mm

Magnet

• Force factor Bl 3.59N/A
• Motor constant Bl/√RE 1.84N/√W
• Air gap height HAG 4mm
• Material Ferrite

Diaphragm

• Effective diameter 53mm
• Effective area SD 22.1cm²
• Moving mass MMS 3.57g
• Moving mass (without air load) MMD 3.5g
• Material Paper

Suspensions

• Stiffness KMS 1.24N/mm
• Compliance CMS 810µm/N
• Equivalent volume to the compliance VAS 0.56L
• Mechanical resistance RMS 0.36N·s/m
• Surround material Rubber

Dimensions

• Nominal diameter 2.5″
• 64mm
• Volume occupied by the driver (estimated) 0.17L
• Net weight 0.44kg
• Frame material Pressed Steel