Eminence DELTA-15LF-4

• Sensitivity (1W, 1m, infinite baffle) SPL1W 95.6dB
• Frequency response 40 - 2200Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 40Hz
• Mechanical quality factor QMS 6.22
• Electrical quality factor QES 0.53
• Total quality factor QTS 0.49

Large signal parameters

• Maximum linear excursion xmax 6mm
• Maximum excursion before damage xlim 16.5mm
• Air volume displaced at xmax VD 521cm³
• Power handling P 600W
• Program power Pmax 1200W

Voice Coil

• Nominal impedance Z 4Ω
• DC resistance RE 3.4Ω
• Inductance (1kHz) LE 0.76mH
• VC Diameter 63.5mm
• Winding material Copper
• Former material Polyimide

Magnet

• Force factor Bl 10.3N/A
• Motor constant Bl/√RE 5.62N/√W
• Air gap height HAG 9.5mm
• Weight 1.588kg
• Material Ferrite

Diaphragm

• Effective diameter 333mm
• Effective area SD 873cm²
• Moving mass MMS 66g
• Moving mass (without air load) MMD 48.3g
• Material Paper

Suspensions

• Stiffness KMS 4.17N/mm
• Compliance CMS 240µm/N
• Equivalent volume to the compliance VAS 254L
• Mechanical resistance RMS 2.67N·s/m
• Surround material Cloth

Dimensions

• Nominal diameter 15″
• 381mm
• Overall diameter 385mm
• Baffle cutout diameter 352mm
• Overall depth 160mm
• Volume occupied by the driver 3.62L
• Net weight 5.806kg
• Frame material Pressed Steel