B&C Speaker 15DS115

• Sensitivity (1W, 1m, infinite baffle) SPL1W 94.1dB
• Frequency response 35 - 1000Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 34Hz
• Mechanical quality factor QMS 4.70
• Electrical quality factor QES 0.17
• Total quality factor QTS 0.16

Large signal parameters

• Maximum linear excursion xmax 16.5mm
• Air volume displaced at xmax VD 1411cm³
• Power handling P 1600W
• Program power Pmax 3200W

Voice Coil

• Nominal impedance Z 4Ω
• DC resistance RE 3.2Ω
• Inductance (1kHz) LE 3.2mH
• VC Diameter 116mm
• Winding height HVC 40mm
• Winding material Aluminium
• Former material Glass Fibre

Magnet

• Flux density B 0.8T
• Force factor Bl 33.6N/A
• Motor constant Bl/√RE 18.8N/√W
• Air gap height HAG 14mm
• Material Neodymium Inside Slug

Diaphragm

• Effective diameter 330mm
• Effective area SD 855cm²
• Moving mass MMS 273g
• Moving mass (without air load) MMD 255g
• Material Waterproof Both Sides

Suspensions

• Stiffness KMS 12.8N/mm
• Compliance CMS 78µm/N
• Equivalent volume to the compliance VAS 83L
• Mechanical resistance RMS 12.4N·s/m
• Spider material Silicone

Dimensions

• Nominal diameter 15″
• 380mm
• Overall diameter 393mm
• Baffle cutout diameter 354mm
• Overall depth 199mm
• Flange thickness 15mm
• Mounting depth 184mm
• Volume occupied by the driver 7L
• Net weight 11.7kg