Eminence LEGEND 1258

• Sensitivity (1W, 1m, infinite baffle) SPL1W 95.8dB
• Frequency response 80 - 4000Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 94Hz
• Mechanical quality factor QMS 6.15
• Electrical quality factor QES 1.18
• Total quality factor QTS 0.99

Large signal parameters

• Maximum linear excursion xmax 0.5mm
• Air volume displaced at xmax VD 24cm³
• Power handling P 75W
• Program power Pmax 150W

Voice Coil

• Nominal impedance Z 8Ω
• DC resistance RE 7.4Ω
• Inductance (1kHz) LE 0.7mH
• VC Diameter 38.1mm
• Winding material Copper
• Former material Polyimide

Magnet

• Force factor Bl 10.9N/A
• Motor constant Bl/√RE 4N/√W
• Air gap height HAG 7.9mm
• Weight 0.964kg
• Material Ferrite

Diaphragm

• Effective diameter 254mm
• Effective area SD 507cm²
• Moving mass MMS 32g
• Moving mass (without air load) MMD 23.9g
• Material Paper

Suspensions

• Stiffness KMS 11.1N/mm
• Compliance CMS 90µm/N
• Equivalent volume to the compliance VAS 32.5L
• Mechanical resistance RMS 3.07N·s/m
• Surround material Paper

Dimensions

• Nominal diameter 12″
• 305mm
• Overall diameter 306mm
• Baffle cutout diameter 281mm
• Overall depth 124mm
• Volume occupied by the driver 1.95L
• Net weight 3.538kg
• Frame material Pressed Steel