Eminence DELTA PRO-8B

• Sensitivity (1W, 1m, infinite baffle) SPL1W 95.6dB
• Frequency response 100 - 5000Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 71Hz
• Mechanical quality factor QMS 7.47
• Electrical quality factor QES 0.27
• Total quality factor QTS 0.27

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 16Ω
• DC resistance RE 10.5Ω
• Inductance (1kHz) LE 0.9mH
• VC Diameter 51mm
• Winding material Copper
• Former material Polyimide

Magnet

• Force factor Bl 17.6N/A
• Motor constant Bl/√RE 5.43N/√W
• Air gap height HAG 7.9mm
• Weight 1.673kg
• Material Ferrite

Diaphragm

• Effective diameter 167mm
• Effective area SD 219cm²
• Moving mass MMS 18g
• Moving mass (without air load) MMD 15.4g
• Material Paper

Suspensions

• Stiffness KMS 3.7N/mm
• Compliance CMS 270µm/N
• Equivalent volume to the compliance VAS 18.3L
• Mechanical resistance RMS 1.07N·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