Precision Devices PD.2160-1N

• Sensitivity (1W, 1m, infinite baffle) SPL1W 95.4dB
• Frequency response 25 - 300Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 35Hz
• Mechanical quality factor QMS 15.80
• Electrical quality factor QES 0.31
• Total quality factor QTS 0.30

Large signal parameters

• Maximum linear excursion xmax 16mm
• Air volume displaced at xmax VD 2717cm³
• Power handling P 2000W
• Program power Pmax 4000W
• Peak power Ppeak 8000W

Voice Coil

• Nominal impedance Z 8Ω
• DC resistance RE 5.3Ω
• Inductance (1kHz) LE 2.65mH
• VC Diameter 138.7mm
• Winding height HVC 37mm
• Winding material Copper
• Former material Glass Fibre

Magnet

• Flux density B 1.45T
• Force factor Bl 43N/A
• Motor constant Bl/√RE 18.7N/√W
• Air gap height HAG 13mm
• Diameter 195mm
• Material Neodymium

Diaphragm

• Effective diameter 465mm
• Effective area SD 1698cm²
• Moving mass MMS 477g
• Moving mass (without air load) MMD 428g
• Material Paper

Suspensions

• Stiffness KMS 23N/mm
• Compliance CMS 43.4µm/N
• Equivalent volume to the compliance VAS 177L
• Mechanical resistance RMS 6.64N·s/m
• Surround material Fabric
• Spider material Fabric

Dimensions

• Nominal diameter 21″
• 530mm
• Overall diameter 550mm
• Baffle cutout diameter 492mm
• Overall depth 237mm
• Flange thickness 14mm
• Mounting depth 223mm
• Volume occupied by the driver (estimated) 8.5L
• Net weight 12.5kg
• Frame material Vented Cast Aluminium