Peerless SDF-375F75PR01-04

• Sensitivity (1W, 1m, infinite baffle) SPL1W 87.5dB
• Frequency response 30 - 300Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 26Hz
• Mechanical quality factor QMS 9.31
• Electrical quality factor QES 0.44
• Total quality factor QTS 0.42

Large signal parameters

• Maximum linear excursion xmax 23.9mm
• Air volume displaced at xmax VD 1843cm³
• Power handling P 300W
• Program power Pmax 600W

Voice Coil

• Nominal impedance Z 4Ω
• DC resistance RE 2.8Ω
• Inductance (1kHz) LE 1.14mH
• VC Diameter 75.6mm

Magnet

• Force factor Bl 19.2N/A
• Motor constant Bl/√RE 11.5N/√W
• Air gap height HAG 18mm
• Material Ferrite

Diaphragm

• Effective diameter 313mm
• Effective area SD 771cm²
• Moving mass MMS 348g
• Moving mass (without air load) MMD 333g
• Material Paper

Suspensions

• Stiffness KMS 9.09N/mm
• Compliance CMS 110µm/N
• Equivalent volume to the compliance VAS 91.2L
• Mechanical resistance RMS 6.11N·s/m
• Surround material Rubber

Dimensions

• Nominal diameter 15″
• 381mm
• Volume occupied by the driver (estimated) 8.1L
• Net weight 17.4kg
• Frame material Cast Aluminium