RCF L15/554K
15" Replacement Woofer

RCF's L15/554K is a high efficiency mid-bass woofer with good linearity.  A Kapton formed voice coil, polycotton suspensions and treated cone guarantee the high power handling of this transducer.

Features:

• 4" 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

Applications:

• The L15-554K is designed to be mounted in compact size bass reflex enclosures.
• The combination of voice coil length, low mass weight and suspensions control makes the L15-554K a good choice for high-powered 2-way systems.
• Thanks to a high BL/Re ratio, small mechanical depth and a strong cone, the L15-554K is good solution for horn loaded or hybrid horn loaded system.

Specifications:

• Nominal Diameter: 15" (380 mm)
• Rated Impedance: 8 ohms
• Program Power: 1200 Watts AES 
• Power handling capacity: 600 Watts AES 
• Sensitivity: 99 dB 
• Frequency Range: 40 Hz ÷ 2000 Hz
• Effective Piston Diameter: 12.8" (325 mm)
• Max Excursion Before Damage (peak to peak): 1.73" (44 mm) 
• Minimum Impedance: 7.9 ohm
• Voice Coil Diameter: 4" (100 mm) 
• Voice Coil Material: Copper 
• Voice Coil Winding Depth: 0.6" (16 mm)
• Number of layers: 2 
• Kind of layer: inside / outside 
• Top Plate Thickness: 0.35" (9 mm)
• Cone Material: No pressed pulp 
• Cone Design: Curved 
• Surround Material: Polycotton 
• Surround Design: M - roll
• Net Weight 24.9 lbs (11.3 kg)
• Shipping Weight: 26.0 lbs (11.8 kg)

THIELE SMALL PARAMETERS

• Resonance frequency: 35 Hz 
• DC resistance: 6.6 ohms
• Mechanical factor: 8.6 
• Electrical factor: 0.25 
• Total factor: 0.24 
• BL Factor: 23 T · m 
• Effective Moving Mass: 91 gr 
• Equivalent Cas air load: 227 liters 
• Effective 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: 15.2" (387 mm) 
• Bolt Circle Diameter:  14.6" (371 mm)
• Bolt Hole Diameter: 0.3" (6.5 mm)
• Front Mount Baffle Cut-out: 14.1" (358 mm)
• Rear Mount Baffle Cut-out: 14.2" (362 mm)
• Depth: 5.4" (138 mm) 
• Volume occupied by the driver: 3.8 / 0.13 liters/ft³