Peerless NCP-1540R01-08

• Sensitivity (1W, 1m, infinite baffle) SPL1W 97.7dB
• Frequency response 50 - 2000Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 54Hz
• Mechanical quality factor QMS 7.68
• Electrical quality factor QES 0.33
• Total quality factor QTS 0.32

Large signal parameters

• Maximum linear excursion xmax 8.2mm
• Air volume displaced at xmax VD 714cm³
• Power handling P 1200W
• Program power Pmax 2400W

Voice Coil

• Nominal impedance Z 8Ω
• DC resistance RE 5.1Ω
• Inductance (1kHz) LE 0.784mH
• VC Diameter 100mm

Magnet

• Force factor Bl 23.9N/A
• Motor constant Bl/√RE 10.6N/√W
• Air gap height HAG 12mm
• Material Neodymium

Diaphragm

• Effective diameter 333mm
• Effective area SD 871cm²
• Moving mass MMS 108g
• Moving mass (without air load) MMD 90.5g
• Material Coated Paper

Suspensions

• Stiffness KMS 12.3N/mm
• Compliance CMS 81µm/N
• Equivalent volume to the compliance VAS 86.5L
• Mechanical resistance RMS 4.77N·s/m

Dimensions

• Nominal diameter 15″
• 381mm
• Volume occupied by the driver (estimated) 3.7L
• Net weight 8.35kg
• Frame material Cast Aluminium