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L15/ 554K

Very high efficiency and good linearity are distinctive features of this mid-bass woofer.

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FEATURES

  • 4-inch, fiberglass inside/outside copper voice coil
  • 1200W continuous program power handling
  • 99 dB Sensitivity
  • 40 Hz – 2 kHz Frequency range
  • M-roll damped surround
  • Exponential damped cone
  • Copper ring

SPECIFICATIONS

  • Nominal Diameter:380 / 15 mm/inch
  • Rated Impedance:8 Ω
  • Program Power:1200 W AES
  • Power handling capacity:600 W AES
  • Sensitivity:99 dB
  • Frequency Range:40 Hz ÷ 2000 Hz
  • Effective Piston Diameter:325 / 12.8 mm/inch
  • Max Excursion Before Damage (peak to peak):44 / 1.73 mm/inch
  • Minimum Impedance:7.9 Ω
  • Voice Coil Diameter:100 / 4 mm/inch
  • Voice Coil Material:Copper
  • Voice Coil Winding Depth:16 / 0.6 mm/inch
  • Number of layers:2
  • Kind of layer:inside / outside
  • Top Plate Thickness:9 / 0.35 mm/inch
  • Cone Material:No pressed pulp
  • Cone Design:Curved
  • Surround Material:Polycotton
  • Surround Design:M - roll
THIELE/SMALL PARAMETERS
  • Resonance frequency:35 Hz
  • DC resistance:6.6Ω
  • Mechanical factor:8.6
  • Electrical factor:0.25
  • Total factor:0.24
  • BL Factor:23 T · m
  • Effective Moving Mass:91 g
  • Equivalent Cas air load:227 liters
  • Effettive piston area:0.083 m²
  • Max. linear excursion (mathematical):5.8 mm
  • Voice - coil inductance @ 1kHz:1.7 mH
  • Half-space efficiency:3.75%
MOUNTING INFORMATION
  • Overall Diameter:387 / 15.2 mm/inch
  • Bolt Circle Diameter:371 / 14.6 mm/inch
  • Bolt Hole Diameter:6.5 / 0.3 mm/inch
  • Front Mount Baffle Cut-out:358 / 14.1 mm/inch
  • Rear Mount Baffle Cut-out:362 / 14.2 mm/inch
  • Depth:138 / 5.4 mm/inch
  • Volume occupied by the driver:3.8 / 0.13 liters/ft³
  • Net Weight:11.3 / 24.9 kg/lbs

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