LD Systems 15″ Replacement Speaker Woofer for ICOA 15A/15ABT

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“.

• Nominal Basket Diameter 15“, 381 mm
• Nominal Impedance 16 ohms
• Power Rating Watts 450 W / Music Program 900 W
• Resonance 33 Hz
• Usable Frequency Range 52 Hz - 2.3 kHz
• Sensitivity 100.5
• Magnet Weight 80 oz.
• Gap Height 0.375“, 9.53 mm
• Voice Coil Diameter 3“, 76.2 mm

• Resonant Frequency (fs) 33 Hz
• DC Resistance (Re) 5.22
• Coil Inductance (Le) 1.05 mH
• Mechanical Q (Qms) 8.90
• Electromagnetic Q (Qes) 0.33
• Total Q (Qts) 0.32
• Compliance Equivalent Volume (Vas) 321.3 liters / 11.35 cu. ft.
• Peak Diaphragm Displacement Volume (Vd) 343 cc
• Mechanical Compliance of Suspension (Cms) 0.31 mm/N
• BL Product (BL) 15.7 T-M
• Diaphragm Mass inc. Airload (Mms) 76 grams
• Efficiency Bandwidth Product (EBP) 98
• Maximum Linear Excursion (Xmax) 4.0 mm
• Surface Area of Cone (Sd) 856.3 cm²
• Maximum Mechanical Limit (Xlim) 11.6 mm

• Recommended Enclosure Volume Sealed N/A Vented 45-113 liters/1.6-4 cu.ft.
• Overall Diameter 15.16“, 384.9 mm
• Baffle Hole Diameter 13.77“, 349.6 mm
• Front Sealing Gasket fitted as standard
• Rear Sealing Gasket fitted as standard
• Mounting Holes Diameter 0.25“, 6.4 mm
• Mounting Holes B.C.D. 14.56“, 369.9 mm
• Depth 6.13“, 156 mm

• Copper voice coil
• Polyimide former
• Ferrite magnet
• Vented core
• Pressed steel basket
• Paper Cone
• Cloth cone edge
• Solid composition paper dust cap