RCF L15-554K 15″ Power: 600W rms, 1200W prog

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

Kapton forme voice coil, polycotton suspensions and treated cone guarantee the very high power handling of this transducer.

• 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

GENERAL SPECIFICATIONS

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

THIELE/SMALL PARAMETERS

• Resonance frequency:35Hz
• DC resistance:6Ω
• Mechanical factor:6
• Electrical factor:25
• Total factor:24
• BL Factor:23T · m
• Effective Moving Mass:91g
• Equivalent Cas air load:227liters
• Effettive piston area:083m²
• linear excursion (mathematical):5.8mm
• Voice - coil inductance @ 1kHz:7mH
• Half-space efficiency:75%

MOUNTING INFORMATION

• Overall Diameter:387 / 15.2mm/inch
• Bolt Circle Diameter:371 / 14.6mm/inch
• Bolt Hole Diameter:5 / 0.3mm/inch
• Front Mount Baffle Cut-out:358 / 14.1mm/inch
• Rear Mount Baffle Cut-out:362 / 14.2mm/inch
• Depth:138 / 5.4mm/inch
• Volume occupied by the driver:8 / 0.13liters/ft³
• Net Weight:3 / 24.9kg/lbs

SHIPPING INFORMATION

• Shipping weight:8 / 26.0kg/lbs

The 2226J 15" low frequency transducer represents the results of JBL's latest engineering research in high power transducer design. For increased power handling while reducing power compression, a unique direct voice coil-to-air heat dissipation method called Vented Gap Cooling has been used. This process pumps air through the magnetic gap and directly over and around the voice coil to provide immediate heat transfer and reduction in operating temperature. Through the use of new computer-aided magnet optimization and analysis techniques comes a new weight-optimized Symmetrical Field Geometry (SFG) magnet structure, resulting in a reduction of overall driver weight and a significant reduction in harmonic distortion. This new magnet structure offers much of the weight advantage of rare earth magnet structures without their prohibitive cost. Specifications: *Power handling: 600 watts RMS *Voice coil diameter: 4" *Nominal impedance: 16 ohms *Frequency Range: 30-2,500 Hz *Magnet assembly weight: 15 lbs. *Fs: 40 Hz *SPL: 97 dB 1W/1m *Vas: 6.2 cu. ft. *Qms: 5.0 *Qes: 0.33 *Qts: 0.31 *Xmax: 7.6 mm *Dimensions: Overall Diameter: 15-1/4“, Cutout Diameter: 14“, Mounting Depth: 5-1/2“.