Precision Devices PDN.8BM32

• Sensitivity (1W, 1m, infinite baffle) SPL1W 94.2dB
• Frequency response 70 - 5000Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 65.9Hz
• Mechanical quality factor QMS 9.42
• Electrical quality factor QES 0.32
• Total quality factor QTS 0.31

Large signal parameters

• Maximum linear excursion xmax 4mm
• Air volume displaced at xmax VD 91cm³
• Power handling P 150W
• Program power Pmax 300W

Voice Coil

• Nominal impedance Z 8Ω
• DC resistance RE 5.6Ω
• Inductance (1kHz) LE 0.36mH
• VC Diameter 51mm
• Winding height HVC 11.5mm
• Winding material Copper
• Former material Glass Fibre

Magnet

• Flux density B 1.43T
• Force factor Bl 12.5N/A
• Motor constant Bl/√RE 5.3N/√W
• Air gap height HAG 6.5mm
• Material Neodymium

Diaphragm

• Effective diameter 170mm
• Effective area SD 227cm²
• Moving mass MMS 21.7g
• Moving mass (without air load) MMD 19.2g
• Material Paper

Suspensions

• Stiffness KMS 3.72N/mm
• Compliance CMS 269µm/N
• Equivalent volume to the compliance VAS 19.5L
• Mechanical resistance RMS 0.95N·s/m

Dimensions

• Nominal diameter 8″
• 200mm
• Overall diameter 210mm
• Baffle cutout diameter 191mm
• Overall depth 97mm
• Flange thickness 9mm
• Mounting depth 89mm
• Volume occupied by the driver (estimated) 0.84L
• Net weight 2.2kg