Celestion NTR06-1705D

• Sensitivity (1W, 1m, infinite baffle) SPL1W 89.7dB
• Frequency response 70 - 7000Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 49Hz
• Mechanical quality factor QMS 6.12
• Electrical quality factor QES 0.40
• Total quality factor QTS 0.38

Large signal parameters

• Maximum linear excursion xmax 6mm
• Air volume displaced at xmax VD 92cm³
• Power handling P 150W
• Program power Pmax 300W

Voice Coil

• Nominal impedance Z 8Ω
• DC resistance RE 5.3Ω
• Inductance (1kHz) LE 0.23mH
• VC Diameter 44mm
• Winding height HVC 15mm
• Winding material Copper clad aluminium
• Former material Polyimide

Magnet

• Force factor Bl 8.17N/A
• Motor constant Bl/√RE 3.56N/√W
• Air gap height HAG 6mm
• Material Neodymium

Diaphragm

• Effective diameter 140mm
• Effective area SD 154cm²
• Moving mass MMS 16.6g
• Moving mass (without air load) MMD 15.1g
• Material Kevlar loaded paper

Suspensions

• Stiffness KMS 1.56N/mm
• Compliance CMS 640µm/N
• Equivalent volume to the compliance VAS 21.4L
• Mechanical resistance RMS 0.83N·s/m
• Surround material Elastomer

Dimensions

• Nominal diameter 6.5″
• 165mm
• Overall diameter 189mm
• Baffle cutout diameter 150mm
• Overall depth 87mm
• Volume occupied by the driver (estimated) 0.43L
• Net weight 0.95kg
• Frame material Cast aluminium