Eminence DELTA PRO-15A

• Sensitivity (1W, 1m, infinite baffle) SPL1W 98.1dB
• Frequency response 54 - 4200Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 42Hz
• Mechanical quality factor QMS 4.73
• Electrical quality factor QES 0.44
• Total quality factor QTS 0.40

Large signal parameters

• Maximum linear excursion xmax 4.3mm
• Maximum excursion before damage xlim 13.7mm
• Air volume displaced at xmax VD 368cm³
• Power handling P 400W
• Program power Pmax 800W

Voice Coil

• Nominal impedance Z 8Ω
• DC resistance RE 5.7Ω
• Inductance (1kHz) LE 0.83mH
• VC Diameter 63.5mm
• Winding material Aluminum
• Former material Polyimide

Magnet

• Force factor Bl 14.5N/A
• Motor constant Bl/√RE 6.07N/√W
• Air gap height HAG 9.5mm
• Weight 2.268kg
• Material Ferrite

Diaphragm

• Effective diameter 330mm
• Effective area SD 856cm²
• Moving mass MMS 61g
• Moving mass (without air load) MMD 43.5g
• Material Paper

Suspensions

• Stiffness KMS 4.17N/mm
• Compliance CMS 240µm/N
• Equivalent volume to the compliance VAS 244L
• Mechanical resistance RMS 3.4N·s/m
• Surround material Cloth

Dimensions

• Nominal diameter 15″
• 381mm
• Overall diameter 389mm
• Baffle cutout diameter 356mm
• Overall depth 154mm
• Volume occupied by the driver 3.91L
• Net weight 7.711kg
• Frame material Die-cast Aluminium