Eminence TEXAS HEAT 4

• Sensitivity (1W, 1m, infinite baffle) SPL1W 97.6dB
• Frequency response 70 - 4000Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 89Hz
• Mechanical quality factor QMS 21.11
• Electrical quality factor QES 0.70
• Total quality factor QTS 0.68

Large signal parameters

• Maximum linear excursion xmax 0.8mm
• Air volume displaced at xmax VD 42cm³
• Power handling P 150W
• Program power Pmax 300W

Voice Coil

• Nominal impedance Z 4Ω
• DC resistance RE 3.8Ω
• Inductance (1kHz) LE 0.5mH
• VC Diameter 50.8mm
• Winding material Copper
• Former material Polyimide

Magnet

• Force factor Bl 9.5N/A
• Motor constant Bl/√RE 4.89N/√W
• Air gap height HAG 7.9mm
• Weight 1.077kg
• Material Ferrite

Diaphragm

• Effective diameter 257mm
• Effective area SD 520cm²
• Moving mass MMS 30g
• Moving mass (without air load) MMD 21.7g
• Material Paper

Suspensions

• Stiffness KMS 9.09N/mm
• Compliance CMS 110µm/N
• Equivalent volume to the compliance VAS 39L
• Mechanical resistance RMS 0.79N·s/m
• Surround material Paper

Dimensions

• Nominal diameter 12″
• 305mm
• Overall diameter 306mm
• Baffle cutout diameter 281mm
• Overall depth 130mm
• Volume occupied by the driver 2.01L
• Net weight 3.765kg
• Frame material Pressed Steel