Peerless NE123W-08-HS

• Sensitivity (1W, 1m, infinite baffle) SPL1W 87.9dB
• Frequency response 60 - 8000Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 61Hz
• Mechanical quality factor QMS 4.98
• Electrical quality factor QES 0.37
• Total quality factor QTS 0.35

Large signal parameters

• Maximum linear excursion xmax 3.1mm
• Air volume displaced at xmax VD 17cm³
• Power handling P 45W
• Program power Pmax 90W

Voice Coil

• Nominal impedance Z 8Ω
• DC resistance RE 6.3Ω
• Inductance (1kHz) LE 0.06mH
• VC Diameter 32.4mm
• Former material Aluminium

Magnet

• Force factor Bl 5.53N/A
• Motor constant Bl/√RE 2.21N/√W
• Air gap height HAG 4mm

Diaphragm

• Effective diameter 83mm
• Effective area SD 54.1cm²
• Moving mass MMS 4.7g
• Moving mass (without air load) MMD 4.4g

Suspensions

• Stiffness KMS 0.698N/mm
• Compliance CMS 1433µm/N
• Equivalent volume to the compliance VAS 5.89L
• Mechanical resistance RMS 0.36N·s/m

Dimensions

• Nominal diameter 4″
• 102mm
• Volume occupied by the driver (estimated) 0.17L
• Net weight 0.44kg