Precision Devices PD.124NR1-LR

• Sensitivity (1W, 1m, infinite baffle) SPL1W 96dB
• Frequency response 45 - 4000Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 45Hz
• Mechanical quality factor QMS 7.30
• Electrical quality factor QES 0.23
• Total quality factor QTS 0.23

Large signal parameters

• Maximum linear excursion xmax 8.5mm
• Air volume displaced at xmax VD 459cm³
• Power handling P 1100W
• Program power Pmax 2200W
• Peak power Ppeak 4400W

Voice Coil

• Nominal impedance Z 8Ω
• DC resistance RE 6.1Ω
• Inductance (1kHz) LE 1.47mH
• VC Diameter 101.6mm
• Winding height HVC 22mm
• Winding material Copper Clad Aluminium
• Former material Glass Fibre

Magnet

• Flux density B 1.3T
• Force factor Bl 22N/A
• Motor constant Bl/√RE 8.91N/√W
• Air gap height HAG 11mm
• Diameter 138mm
• Material Neodymium

Diaphragm

• Effective diameter 262mm
• Effective area SD 540cm²
• Moving mass MMS 66g
• Moving mass (without air load) MMD 56.7g
• Material Paper

Suspensions

• Stiffness KMS 5.29N/mm
• Compliance CMS 189µm/N
• Equivalent volume to the compliance VAS 78L
• Mechanical resistance RMS 2.56N·s/m
• Surround material M Roll Poly Cotton
• Spider material Poly Cotton / silicone damping

Dimensions

• Nominal diameter 12″
• 305mm
• Overall diameter 331mm
• Baffle cutout diameter 282mm
• Overall depth 156mm
• Flange thickness 10mm
• Mounting depth 146mm
• Volume occupied by the driver (estimated) 3.2L
• Net weight 7.0kg
• Frame material Vented cast aluminium