D.A.S. Audio 15LM

• Sensitivity (1W, 1m, infinite baffle) SPL1W 96dB
• Frequency response 40 - 5000Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 40.4Hz
• Mechanical quality factor QMS 8.59
• Electrical quality factor QES 0.52
• Total quality factor QTS 0.49

Large signal parameters

• Maximum linear excursion xmax 5mm
• Air volume displaced at xmax VD 449cm³
• Power handling P 400W
• Program power Pmax 800W

Voice Coil

• Nominal impedance Z 8Ω
• DC resistance RE 6.4Ω
• Inductance (1kHz) LE 0.82mH
• VC Diameter 77mm
• Winding material Copper

Magnet

• Force factor Bl 16.3N/A
• Motor constant Bl/√RE 6.44N/√W
• Material Ferrite

Diaphragm

• Effective diameter 338mm
• Effective area SD 897cm²
• Moving mass MMS 85.8g
• Moving mass (without air load) MMD 67.8g

Suspensions

• Stiffness KMS 5.53N/mm
• Compliance CMS 181µm/N
• Equivalent volume to the compliance VAS 207L
• Mechanical resistance RMS 2.53N·s/m

Dimensions

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