PHL audio 4511

• Sensitivity (1W, 1m, infinite baffle) SPL1W 93.7dB
• Frequency response 45 - 2000Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 48Hz
• Mechanical quality factor QMS 4.12
• Electrical quality factor QES 0.45
• Total quality factor QTS 0.40

Large signal parameters

• Maximum linear excursion xmax 7mm
• Maximum excursion before damage xlim 14mm
• Air volume displaced at xmax VD 377cm³
• Power handling P 300W
• Program power Pmax 600W

Voice Coil

• Nominal impedance Z 8Ω
• DC resistance RE 5.5Ω
• Inductance (1kHz) LE 1.07mH
• VC Diameter 64mm
• Winding height HVC 18mm

Magnet

• Force factor Bl 15.1N/A
• Motor constant Bl/√RE 6.44N/√W
• Air gap height HAG 8mm
• Diameter 172mm
• Material Ferrite

Diaphragm

• Effective diameter 262mm
• Effective area SD 539cm²
• Moving mass MMS 62g
• Moving mass (without air load) MMD 53.3g

Suspensions

• Stiffness KMS 5.56N/mm
• Compliance CMS 180µm/N
• Equivalent volume to the compliance VAS 74.1L
• Mechanical resistance RMS 4.54N·s/m

Dimensions

• Nominal diameter 12″
• 300mm
• Overall diameter 307mm
• Baffle cutout diameter 282mm
• Overall depth 138mm
• Flange thickness 13mm
• Mounting depth 125mm
• Volume occupied by the driver 2.2L
• Net weight 6.4kg