Peerless NE180W-04

• Sensitivity (1W, 1m, infinite baffle) SPL1W 88.4dB
• Frequency response 40 - 4000Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 44Hz
• Mechanical quality factor QMS 8.43
• Electrical quality factor QES 0.34
• Total quality factor QTS 0.32

Large signal parameters

• Maximum linear excursion xmax 7mm
• Air volume displaced at xmax VD 95cm³
• Power handling P 80W
• Program power Pmax 160W

Voice Coil

• Nominal impedance Z 4Ω
• DC resistance RE 3.2Ω
• Inductance (1kHz) LE 0.206mH
• VC Diameter 38.4mm

Magnet

• Force factor Bl 6.95N/A
• Motor constant Bl/√RE 3.89N/√W
• Air gap height HAG 6mm
• Material Neodymium

Diaphragm

• Effective diameter 131mm
• Effective area SD 135cm²
• Moving mass MMS 18.3g
• Moving mass (without air load) MMD 17.1g
• Material Patented PentaCut

Suspensions

• Stiffness KMS 1.43N/mm
• Compliance CMS 700µm/N
• Equivalent volume to the compliance VAS 18.1L
• Mechanical resistance RMS 0.6N·s/m

Dimensions

• Nominal diameter 6.5″
• 165mm
• Volume occupied by the driver (estimated) 0.32L
• Net weight 0.82kg
• Frame material Cast Aluminium