D.A.S. Audio 15B

• Sensitivity (1W, 1m, infinite baffle) SPL1W 98.9dB
• Frequency response 40 - 5000Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 42Hz
• Mechanical quality factor QMS 6.39
• Electrical quality factor QES 0.25
• Total quality factor QTS 0.24

Large signal parameters

• Maximum linear excursion xmax 4mm
• Maximum excursion before damage xlim 10mm
• Air volume displaced at xmax VD 344cm³
• Power handling P 500W
• Program power Pmax 1000W

Voice Coil

• Nominal impedance Z 8Ω
• DC resistance RE 5.6Ω
• Inductance (1kHz, estimated) LE 2.2mH
• VC Diameter 102mm
• Winding height HVC 12mm
• Winding material Aluminium
• Former material Glass Fibre Reinforced Polymer

Magnet

• Force factor Bl 21.3N/A
• Motor constant Bl/√RE 9N/√W
• Air gap height HAG 8mm
• Material Ferrite

Diaphragm

• Effective diameter 331mm
• Effective area SD 860cm²
• Moving mass MMS 75g
• Moving mass (without air load) MMD 57.8g

Suspensions

• Stiffness KMS 5.29N/mm
• Compliance CMS 189µm/N
• Equivalent volume to the compliance VAS 198L
• Mechanical resistance RMS 3.1N·s/m
• Surround material Polycotton
• Spider material Polycotton

Dimensions

• Nominal diameter 15″
• 381mm
• Baffle cutout diameter 359mm
• Volume occupied by the driver (estimated) 4.3L
• Frame material Injected Aluminum