Acoustic Elegance TD15H-4

• Sensitivity (1W, 1m, infinite baffle) SPL1W 94.1dB

Thiele & Small parameters

• Resonance frequency (free air) fS 21Hz
• Mechanical quality factor QMS 4.23
• Electrical quality factor QES 0.27
• Total quality factor QTS 0.26

Large signal parameters

• Maximum linear excursion xmax 14mm
• Maximum excursion before damage xlim 20mm
• Air volume displaced at xmax VD 1197cm³
• Power handling P 500W
• Program power Pmax 1000W

Voice Coil

• Nominal impedance Z 4Ω
• DC resistance RE 3.5Ω
• Inductance (1kHz) LE 0.3mH

Magnet

• Force factor Bl 14.9N/A
• Motor constant Bl/√RE 7.96N/√W

Diaphragm

• Effective diameter 330mm
• Effective area SD 855cm²
• Moving mass MMS 129g
• Moving mass (without air load) MMD 112g

Suspensions

• Stiffness KMS 2.22N/mm
• Compliance CMS 450µm/N
• Equivalent volume to the compliance VAS 467L
• Mechanical resistance RMS 4N·s/m

Dimensions

• Nominal diameter 15″
• 381mm
• Volume occupied by the driver (estimated) 4.3L