Peerless GBS-85N25PR03-04

• Sensitivity (1W, 1m, infinite baffle) SPL1W 83.8dB
• Frequency response 100 - 8000Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 120Hz
• Mechanical quality factor QMS 5.24
• Electrical quality factor QES 1.10
• Total quality factor QTS 0.91

Large signal parameters

• Maximum linear excursion xmax 3.1mm
• Air volume displaced at xmax VD 11cm³
• Power handling P 15W
• Program power Pmax 30W

Voice Coil

• Nominal impedance Z 4Ω
• DC resistance RE 3.2Ω
• Inductance (1kHz) LE 0.101mH
• VC Diameter 25.7mm

Magnet

• Force factor Bl 2.9N/A
• Motor constant Bl/√RE 1.62N/√W
• Air gap height HAG 3mm
• Material Neodymium

Diaphragm

• Effective diameter 67mm
• Effective area SD 35.3cm²
• Moving mass MMS 3.77g
• Moving mass (without air load) MMD 3.6g
• Material Paper

Suspensions

• Stiffness KMS 2.22N/mm
• Compliance CMS 450µm/N
• Equivalent volume to the compliance VAS 0.789L
• Mechanical resistance RMS 0.54N·s/m
• Surround material Rubber

Dimensions

• Nominal diameter 3.5″
• 89mm
• Volume occupied by the driver (estimated) 0.1L
• Net weight 0.121kg