Precision Devices PD.154C001

• Sensitivity (1W, 1m, infinite baffle) SPL1W 96.4dB
• Frequency response 45 - 1000Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 45Hz
• Mechanical quality factor QMS 4.29
• Electrical quality factor QES 0.34
• Total quality factor QTS 0.31

Large signal parameters

• Maximum linear excursion xmax 8.2mm
• Air volume displaced at xmax VD 736cm³
• Power handling P 900W
• Program power Pmax 1800W
• Peak power Ppeak 3600W

Voice Coil

• Nominal impedance Z 8Ω
• DC resistance RE 6.1Ω
• Inductance (1kHz) LE 1.8mH
• VC Diameter 101.6mm
• Winding height HVC 22mm
• Winding material Copper Clad Aluminium
• Former material Glass Fibre

Magnet

• Flux density B 1.39T
• Force factor Bl 25.5N/A
• Motor constant Bl/√RE 10.3N/√W
• Air gap height HAG 10mm
• Diameter 220mm
• Material Ceramic

Diaphragm

• Effective diameter 338mm
• Effective area SD 898cm²
• Moving mass MMS 119g
• Moving mass (without air load) MMD 99.8g
• Material Paper

Suspensions

• Stiffness KMS 8.94N/mm
• Compliance CMS 112µm/N
• Equivalent volume to the compliance VAS 128L
• Mechanical resistance RMS 7.84N·s/m
• Surround material Fabric
• Spider material Fabric

Dimensions

• Nominal diameter 15″
• 381mm
• Overall diameter 408mm
• Baffle cutout diameter 356mm
• Overall depth 165mm
• Flange thickness 11mm
• Mounting depth 154mm
• Volume occupied by the driver (estimated) 5.6L
• Net weight 12.8kg