Precision Devices PDN.15SB40

• Sensitivity (1W, 1m, infinite baffle) SPL1W 97.7dB
• Frequency response 40 - 3000Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 50.2Hz
• Mechanical quality factor QMS 14.94
• Electrical quality factor QES 0.28
• Total quality factor QTS 0.27

Large signal parameters

• Maximum linear excursion xmax 6mm
• Air volume displaced at xmax VD 513cm³
• Power handling P 600W
• Program power Pmax 1200W

Voice Coil

• Nominal impedance Z 8Ω
• DC resistance RE 5.9Ω
• Inductance (1kHz) LE 0.78mH
• VC Diameter 101mm
• Winding height HVC 19mm
• Winding material Copper
• Former material Glass Fibre

Magnet

• Flux density B 1.2T
• Force factor Bl 28.7N/A
• Motor constant Bl/√RE 11.8N/√W
• Air gap height HAG 11mm
• Material Neodymium

Diaphragm

• Effective diameter 330mm
• Effective area SD 855cm²
• Moving mass MMS 124g
• Moving mass (without air load) MMD 106g
• Material Paper

Suspensions

• Stiffness KMS 12.3N/mm
• Compliance CMS 81.3µm/N
• Equivalent volume to the compliance VAS 83.5L
• Mechanical resistance RMS 2.61N·s/m
• Surround material Fabric

Dimensions

• Nominal diameter 15″
• 380mm
• Overall diameter 410mm
• Baffle cutout diameter 357mm
• Overall depth 155mm
• Flange thickness 10mm
• Mounting depth 145mm
• Volume occupied by the driver (estimated) 3.9L
• Net weight 7.7kg