Celestion TN1530

• Sensitivity (1W, 1m, infinite baffle) SPL1W 96.2dB
• Frequency response 40 - 3000Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 42.5Hz
• Mechanical quality factor QMS 2.62
• Electrical quality factor QES 0.36
• Total quality factor QTS 0.32

Large signal parameters

• Maximum linear excursion xmax 3.8mm
• Air volume displaced at xmax VD 321cm³
• Power handling P 300W
• Program power Pmax 600W

Voice Coil

• Nominal impedance Z 8Ω
• DC resistance RE 5.4Ω
• Inductance (1kHz) LE 1.11mH
• VC Diameter 75mm
• Winding height HVC 17.5mm
• Winding material Round copper
• Former material Polyimide

Magnet

• Force factor Bl 19.3N/A
• Motor constant Bl/√RE 8.32N/√W
• Air gap height HAG 10mm
• Material Neodymium

Diaphragm

• Effective diameter 330mm
• Effective area SD 855cm²
• Moving mass MMS 92.6g
• Moving mass (without air load) MMD 75.3g
• Material Kevlar loaded paper

Suspensions

• Stiffness KMS 6.67N/mm
• Compliance CMS 150µm/N
• Equivalent volume to the compliance VAS 157L
• Mechanical resistance RMS 9.45N·s/m
• Surround material Cloth-sealed

Dimensions

• Nominal diameter 15″
• 381mm
• Overall diameter 385mm
• Baffle cutout diameter 352mm
• Overall depth 160mm
• Volume occupied by the driver (estimated) 2L
• Net weight 2.8kg
• Frame material Pressed steel