4215 D4 - 15IN - SUB

4000 Series 15-Inch Subwoofer for Small Vented Enclosures

• Optimal Power Range:

  • Designed to handle 500W – 1,500W for powerful, consistent performance

• Key Features:

  • 3-Inch Voice Coil for superior thermal management and durability

  • Triple Stack 225oz Motor delivers immense magnetic force for precise bass control

  • 23.5mm Xmax allows extended excursion for deep, impactful low frequencies

  • Double high-current tinsel leads for reliable performance under heavy loads

  • Nomex Spider provides stability and durability for long-term use

  • Designed for small vented enclosures to maximize bass output

  • Engineered in the USA for top-tier quality

• Engineered for Efficiency and Versatility:

  • The 4000 Series 15 offers a finely-tuned balance of damping and motor force, delivering high efficiency and versatility across a range of real-world applications.

• Technical Specifications:

  • Fs (Resonance Frequency): 32.54 Hz

  • Qts (Total Q Factor): 0.496

  • Qms (Mechanical Q Factor): 5.375

  • Qes (Electrical Q Factor): 0.546

  • Vas (Compliance Equivalent Volume): 44.87 L

  • Sd (Effective Piston Area): 776.35 sq cm

  • BL (Force Factor): 35.43 Tm

  • Re (DC Resistance): 7.432 ohms

  • Le (Inductance): 3.961 mH

  • SPL (Efficiency): 86.51 dB

  • EBP (Efficiency Bandwidth Product): 59.55

• Physical Dimensions:

  • Nominal Diameter: 15 in

  • Mounting Hole Diameter: 14.17 in / 359.92 mm

  • Motor Outer Diameter: 7.72 in / 196 mm

  • Driver Displacement: 0.157 cu ft / 4.47 L

• Enclosure Recommendations:

  • Minimum Vented Volume: 1.65 cu ft, with adjustable tuning for optimal bass response

  • Not recommended for sealed enclosures

This 4000 Series 15-inch subwoofer delivers exceptional bass performance with advanced engineering and robust construction. Its powerful motor force, extended excursion, and precision design make it ideal for audiophiles and enthusiasts seeking deep, dynamic bass in small vented enclosures.