Peerless NE225W-04

• Sensitivity (1W, 1m, infinite baffle) SPL1W 88.2dB
• Frequency response 30 - 1000Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 37Hz
• Mechanical quality factor QMS 10.30
• Electrical quality factor QES 0.39
• Total quality factor QTS 0.37

Large signal parameters

• Maximum linear excursion xmax 10.3mm
• Air volume displaced at xmax VD 234cm³
• Power handling P 125W
• Program power Pmax 250W

Voice Coil

• Nominal impedance Z 4Ω
• DC resistance RE 3.0Ω
• Inductance (1kHz) LE 0.269mH
• VC Diameter 51.3mm

Magnet

• Force factor Bl 8.42N/A
• Motor constant Bl/√RE 4.86N/√W
• Air gap height HAG 8mm
• Material Neodymium

Diaphragm

• Effective diameter 170mm
• Effective area SD 227cm²
• Moving mass MMS 39.1g
• Moving mass (without air load) MMD 36.7g
• Material Patented PentaCut

Suspensions

• Stiffness KMS 2.13N/mm
• Compliance CMS 470µm/N
• Equivalent volume to the compliance VAS 34.4L
• Mechanical resistance RMS 0.88N·s/m

Dimensions

• Nominal diameter 8″
• 203mm
• Volume occupied by the driver (estimated) 0.75L
• Net weight 1.84kg
• Frame material Cast Aluminium