PHL audio 6121M-20

• Sensitivity (1W, 1m, infinite baffle) SPL1W 95.6dB
• Frequency response 35 - 1000Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 39Hz
• Mechanical quality factor QMS 4.22
• Electrical quality factor QES 0.25
• Total quality factor QTS 0.24

Large signal parameters

• Maximum linear excursion xmax 8.5mm
• Maximum excursion before damage xlim 14mm
• Air volume displaced at xmax VD 758cm³
• Power handling P 800W
• Program power Pmax 1600W

Voice Coil

• Nominal impedance Z 8Ω
• DC resistance RE 5.6Ω
• Inductance (1kHz) LE 2.06mH
• VC Diameter 101mm
• Winding height HVC 22mm

Magnet

• Force factor Bl 29N/A
• Motor constant Bl/√RE 12.3N/√W
• Air gap height HAG 10mm
• Diameter 138mm
• Material Ferrite

Diaphragm

• Effective diameter 337mm
• Effective area SD 892cm²
• Moving mass MMS 155g
• Moving mass (without air load) MMD 137g

Suspensions

• Stiffness KMS 9.09N/mm
• Compliance CMS 110µm/N
• Equivalent volume to the compliance VAS 120L
• Mechanical resistance RMS 9N·s/m

Dimensions

• Nominal diameter 15″
• 380mm
• Overall diameter 381mm
• Baffle cutout diameter 355mm
• Overall depth 188mm
• Flange thickness 13mm
• Mounting depth 175mm
• Volume occupied by the driver 5L
• Net weight 9.2kg