Celestion PULSE12

• Sensitivity (1W, 1m, infinite baffle) SPL1W 93.9dB
• Frequency response 45 - 3500Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 45Hz
• Mechanical quality factor QMS 2.74
• Electrical quality factor QES 0.49
• Total quality factor QTS 0.42

Large signal parameters

• Maximum linear excursion xmax 4mm
• Air volume displaced at xmax VD 212cm³
• Power handling P 200W
• Program power Pmax 400W

Voice Coil

• Nominal impedance Z 8Ω
• DC resistance RE 5.8Ω
• Inductance (1kHz) LE 1mH
• VC Diameter 50.8mm
• Winding height HVC 16mm
• Winding material Copper
• Former material Polyimide

Magnet

• Force factor Bl 12.7N/A
• Motor constant Bl/√RE 5.28N/√W
• Air gap height HAG 8mm
• Height 34mm
• Material Ferrite

Diaphragm

• Effective diameter 260mm
• Effective area SD 531cm²
• Moving mass MMS 47.6g
• Moving mass (without air load) MMD 39g
• Material Kevlar loaded paper

Suspensions

• Stiffness KMS 3.85N/mm
• Compliance CMS 260µm/N
• Equivalent volume to the compliance VAS 105L
• Mechanical resistance RMS 4.92N·s/m
• Surround material Cloth-sealed

Dimensions

• Nominal diameter 12″
• 305mm
• Overall diameter 309mm
• Baffle cutout diameter 283mm
• Overall depth 130mm
• Volume occupied by the driver (estimated) 1.7L
• Net weight 3.2kg