Peerless SLS-85S25CP05-08

• Sensitivity (1W, 1m, infinite baffle) SPL1W 82.3dB
• Frequency response 70 - 20000Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 79Hz
• Mechanical quality factor QMS 6.95
• Electrical quality factor QES 0.50
• Total quality factor QTS 0.46

Large signal parameters

• Maximum linear excursion xmax 6.5mm
• Air volume displaced at xmax VD 20cm³
• Power handling P 25W
• Program power Pmax 50W

Voice Coil

• Nominal impedance Z 8Ω
• DC resistance RE 6.5Ω
• Inductance (1kHz) LE 0.347mH
• VC Diameter 25.7mm

Magnet

• Force factor Bl 5.72N/A
• Motor constant Bl/√RE 2.24N/√W
• Air gap height HAG 6mm
• Material Ferrite

Diaphragm

• Effective diameter 63mm
• Effective area SD 31.2cm²
• Moving mass MMS 5.04g
• Moving mass (without air load) MMD 4.9g
• Material Silk

Suspensions

• Stiffness KMS 1.24N/mm
• Compliance CMS 810µm/N
• Equivalent volume to the compliance VAS 1.12L
• Mechanical resistance RMS 0.36N·s/m
• Surround material Rubber

Dimensions

• Nominal diameter 3.5″
• 89mm
• Volume occupied by the driver (estimated) 0.35L
• Net weight 0.9kg