Celestion NTR06-1705B

• Sensitivity (1W, 1m, infinite baffle) SPL1W 93.8dB
• Frequency response 150 - 7000Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 133Hz
• Mechanical quality factor QMS 1.91
• Electrical quality factor QES 0.58
• Total quality factor QTS 0.44

Large signal parameters

• Maximum linear excursion xmax 4mm
• Air volume displaced at xmax VD 62cm³
• Power handling P 150W
• Program power Pmax 300W

Voice Coil

• Nominal impedance Z 8Ω
• DC resistance RE 5.9Ω
• Inductance (1kHz) LE 0.21mH
• VC Diameter 44mm
• Winding height HVC 11mm
• Winding material Copper clad aluminium
• Former material Polyimide

Magnet

• Force factor Bl 10.7N/A
• Motor constant Bl/√RE 4.39N/√W
• Air gap height HAG 6mm
• Material Neodymium

Diaphragm

• Effective diameter 140mm
• Effective area SD 154cm²
• Moving mass MMS 13.3g
• Moving mass (without air load) MMD 11.8g
• Material Kevlar loaded paper

Suspensions

• Stiffness KMS 9.09N/mm
• Compliance CMS 110µm/N
• Equivalent volume to the compliance VAS 3.63L
• Mechanical resistance RMS 5.79N·s/m
• Surround material Cloth-sealed

Dimensions

• Nominal diameter 6.5″
• 165mm
• Overall diameter 189mm
• Baffle cutout diameter 150mm
• Overall depth 71mm
• Volume occupied by the driver (estimated) 0.35L
• Net weight 0.85kg
• Frame material Cast aluminium