Eminence DELTA-15A

• Sensitivity (1W, 1m, infinite baffle) SPL1W 97.7dB
• Frequency response 48 - 4000Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 40Hz
• Mechanical quality factor QMS 8.05
• Electrical quality factor QES 0.57
• Total quality factor QTS 0.53

Large signal parameters

• Maximum linear excursion xmax 2.7mm
• Maximum excursion before damage xlim 11.1mm
• Air volume displaced at xmax VD 233cm³
• Power handling P 400W
• Program power Pmax 800W

Voice Coil

• Nominal impedance Z 8Ω
• DC resistance RE 6.3Ω
• Inductance (1kHz) LE 0.64mH
• VC Diameter 63.5mm
• Winding material Aluminum
• Former material Polyimide

Magnet

• Force factor Bl 13.2N/A
• Motor constant Bl/√RE 5.26N/√W
• Air gap height HAG 9.5mm
• Weight 1.588kg
• Material Ferrite

Diaphragm

• Effective diameter 332mm
• Effective area SD 865cm²
• Moving mass MMS 62g
• Moving mass (without air load) MMD 44.5g
• Material Paper

Suspensions

• Stiffness KMS 3.85N/mm
• Compliance CMS 260µm/N
• Equivalent volume to the compliance VAS 271L
• Mechanical resistance RMS 1.94N·s/m
• Surround material Cloth

Dimensions

• Nominal diameter 15″
• 381mm
• Overall diameter 385mm
• Baffle cutout diameter 352mm
• Overall depth 154mm
• Volume occupied by the driver 3.62L
• Net weight 5.579kg
• Frame material Pressed Steel