PHL audio 7081

• Sensitivity (1W, 1m, infinite baffle) SPL1W 94.9dB
• Frequency response 30 - 800Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 34Hz
• Mechanical quality factor QMS 5.81
• Electrical quality factor QES 0.44
• Total quality factor QTS 0.41

Large signal parameters

• Maximum linear excursion xmax 7.5mm
• Maximum excursion before damage xlim 16mm
• Air volume displaced at xmax VD 962cm³
• Power handling P 750W
• Program power Pmax 1500W

Voice Coil

• Nominal impedance Z 8Ω
• DC resistance RE 5.6Ω
• Inductance (1kHz) LE 1.41mH
• VC Diameter 101mm
• Winding height HVC 22mm

Magnet

• Force factor Bl 22.7N/A
• Motor constant Bl/√RE 9.59N/√W
• Air gap height HAG 10mm
• Diameter 225mm
• Material Ferrite

Diaphragm

• Effective diameter 404mm
• Effective area SD 1282cm²
• Moving mass MMS 190g
• Moving mass (without air load) MMD 159g

Suspensions

• Stiffness KMS 9.09N/mm
• Compliance CMS 110µm/N
• Equivalent volume to the compliance VAS 268L
• Mechanical resistance RMS 6.99N·s/m

Dimensions

• Nominal diameter 18″
• 460mm
• Overall diameter 457mm
• Baffle cutout diameter 422mm
• Overall depth 186mm
• Flange thickness 15mm
• Mounting depth 171mm
• Volume occupied by the driver 7L
• Net weight 10.9kg