Acoustic Elegance Dipole18-D16

• Sensitivity (1W, 1m, infinite baffle) SPL1W 93.3dB

Thiele & Small parameters

• Resonance frequency (free air) fS 22.9Hz
• Mechanical quality factor QMS 8.85
• Electrical quality factor QES 0.89
• Total quality factor QTS 0.81

Large signal parameters

• Maximum linear excursion xmax 12mm
• Maximum excursion before damage xlim 25mm
• Air volume displaced at xmax VD 1462cm³
• Power handling P 150W
• Program power Pmax 300W

Voice Coil

• Nominal impedance Z 2 x 16Ω
• DC resistance (in series) RE 27.2Ω
• Inductance (1kHz, in series) LE 3.2mH

Magnet

• Force factor (in series) Bl 22.5N/A
• Motor constant Bl/√RE 4.31N/√W

Diaphragm

• Effective diameter 394mm
• Effective area SD 1218cm²
• Moving mass MMS 115g
• Moving mass (without air load) MMD 85.7g

Suspensions

• Stiffness KMS 2.38N/mm
• Compliance CMS 420µm/N
• Equivalent volume to the compliance VAS 885L
• Mechanical resistance RMS 1.87N·s/m

Dimensions

• Nominal diameter 18″
• 457mm
• Volume occupied by the driver (estimated) 6.9L