Acoustic Elegance IB12HT-4

• Sensitivity (1W, 1m, infinite baffle) SPL1W 82.3dB

Thiele & Small parameters

• Resonance frequency (free air) fS 16.8Hz
• Mechanical quality factor QMS 4.84
• Electrical quality factor QES 0.74
• Total quality factor QTS 0.64

Large signal parameters

• Maximum linear excursion xmax 18.5mm
• Maximum excursion before damage xlim 25mm
• Air volume displaced at xmax VD 981cm³
• Power handling P 500W
• Program power Pmax 1000W

Voice Coil

• Nominal impedance Z 4Ω
• DC resistance RE 2.8Ω
• Inductance (1kHz) LE 0.16mH

Magnet

• Force factor Bl 8.91N/A
• Motor constant Bl/√RE 5.32N/√W

Diaphragm

• Effective diameter 260mm
• Effective area SD 530cm²
• Moving mass MMS 200g
• Moving mass (without air load) MMD 192g

Suspensions

• Stiffness KMS 2.22N/mm
• Compliance CMS 450µm/N
• Equivalent volume to the compliance VAS 180L
• Mechanical resistance RMS 4.35N·s/m

Dimensions

• Nominal diameter 12″
• 305mm
• Volume occupied by the driver (estimated) 2.4L