Peerless NCP-1230R01-08

• Sensitivity (1W, 1m, infinite baffle) SPL1W 96dB
• Frequency response 63 - 3500Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 63Hz
• Mechanical quality factor QMS 6.15
• Electrical quality factor QES 0.39
• Total quality factor QTS 0.37

Large signal parameters

• Maximum linear excursion xmax 7.9mm
• Air volume displaced at xmax VD 434cm³
• Power handling P 600W
• Program power Pmax 1200W

Voice Coil

• Nominal impedance Z 8Ω
• DC resistance RE 5.6Ω
• Inductance (1kHz) LE 0.74mH
• VC Diameter 75.7mm

Magnet

• Force factor Bl 18.1N/A
• Motor constant Bl/√RE 7.65N/√W
• Air gap height HAG 10mm
• Material Neodymium

Diaphragm

• Effective diameter 264mm
• Effective area SD 547cm²
• Moving mass MMS 58.6g
• Moving mass (without air load) MMD 49.8g
• Material Paper

Suspensions

• Stiffness KMS 9.09N/mm
• Compliance CMS 110µm/N
• Equivalent volume to the compliance VAS 46.3L
• Mechanical resistance RMS 3.77N·s/m

Dimensions

• Nominal diameter 12″
• 305mm
• Volume occupied by the driver (estimated) 2.2L
• Net weight 5.0kg
• Frame material Cast Aluminium