Peerless SDS-135F25CP02-04

• Sensitivity (1W, 1m, infinite baffle) SPL1W 84.2dB
• Frequency response 50 - 1000Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 58Hz
• Mechanical quality factor QMS 3.68
• Electrical quality factor QES 0.45
• Total quality factor QTS 0.40

Large signal parameters

• Maximum linear excursion xmax 7.2mm
• Air volume displaced at xmax VD 62cm³
• Power handling P 50W
• Program power Pmax 100W

Voice Coil

• Nominal impedance Z 4Ω
• DC resistance RE 3.1Ω
• Inductance (1kHz) LE 1.06mH
• VC Diameter 25.7mm

Magnet

• Force factor Bl 7.2N/A
• Motor constant Bl/√RE 4.09N/√W
• Air gap height HAG 6mm
• Material Ferrite

Diaphragm

• Effective diameter 105mm
• Effective area SD 86.6cm²
• Moving mass MMS 20.4g
• Moving mass (without air load) MMD 19.8g
• Material Paper

Suspensions

• Stiffness KMS 2.7N/mm
• Compliance CMS 370µm/N
• Equivalent volume to the compliance VAS 3.94L
• Mechanical resistance RMS 2.02N·s/m
• Surround material NBR Rubber

Dimensions

• Nominal diameter 5″
• 133mm
• Volume occupied by the driver (estimated) 0.38L
• Net weight 0.96kg
• Frame material Pressed Steel