Eminence DELTA PRO-8A

• Sensitivity (1W, 1m, infinite baffle) SPL1W 95.8dB
• Frequency response 100 - 3000Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 69Hz
• Mechanical quality factor QMS 6.43
• Electrical quality factor QES 0.22
• Total quality factor QTS 0.22

Large signal parameters

• Maximum linear excursion xmax 3mm
• Maximum excursion before damage xlim 7mm
• Air volume displaced at xmax VD 66cm³
• Power handling P 225W
• Program power Pmax 450W

Voice Coil

• Nominal impedance Z 8Ω
• DC resistance RE 5.4Ω
• Inductance (1kHz) LE 0.82mH
• VC Diameter 51mm
• Winding material Copper
• Former material Polyimide

Magnet

• Force factor Bl 14.1N/A
• Motor constant Bl/√RE 6.07N/√W
• Air gap height HAG 7.9mm
• Weight 1.673kg
• Material Ferrite

Diaphragm

• Effective diameter 167mm
• Effective area SD 218cm²
• Moving mass MMS 19g
• Moving mass (without air load) MMD 16.4g
• Material Paper

Suspensions

• Stiffness KMS 3.57N/mm
• Compliance CMS 280µm/N
• Equivalent volume to the compliance VAS 18.3L
• Mechanical resistance RMS 1.28N·s/m
• Surround material Cloth

Dimensions

• Nominal diameter 8″
• 203mm
• Overall diameter 238mm
• Baffle cutout diameter 187mm
• Overall depth 95mm
• Volume occupied by the driver 1.04L
• Net weight 4.54kg
• Frame material Die-cast aluminum