Peerless NE149W-08

• Sensitivity (1W, 1m, infinite baffle) SPL1W 87.5dB
• Frequency response 50 - 5000Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 53.9Hz
• Mechanical quality factor QMS 8.19
• Electrical quality factor QES 0.40
• Total quality factor QTS 0.38

Large signal parameters

• Maximum linear excursion xmax 5mm
• Air volume displaced at xmax VD 43cm³
• Power handling P 60W
• Program power Pmax 120W

Voice Coil

• Nominal impedance Z 8Ω
• DC resistance RE 6.3Ω
• Inductance (1kHz) LE 0.08mH
• VC Diameter 38.4mm
• Former material Aluminium

Magnet

• Force factor Bl 7.42N/A
• Motor constant Bl/√RE 2.95N/√W
• Air gap height HAG 6mm

Diaphragm

• Effective diameter 104mm
• Effective area SD 85cm²
• Moving mass MMS 10.3g
• Moving mass (without air load) MMD 9.7g

Suspensions

• Stiffness KMS 1.19N/mm
• Compliance CMS 843µm/N
• Equivalent volume to the compliance VAS 8.54L
• Mechanical resistance RMS 0.43N·s/m

Dimensions

• Nominal diameter 5″
• 133mm
• Volume occupied by the driver (estimated) 0.26L
• Net weight 0.68kg