About: DS18 ZXI15.4D 15" High Excursion Car Subwoofer 1000W Watts RMS - Dual 4 Ohm 

Experience bass like never before with DS18’s ZXI15.4D: the ultimate subwoofer for enthusiasts who crave thunderous bass! The ZXI subline is renowned for its high excursion capabilities, and the ZXI15.4D is no exception. This subwoofer handles wattage as high as 2000W while delivering smooth ultra-low frequency responses. The ZXI15.4D’s lower than normal FS (Resonant Frequency), allows it to excel in larger boxes with lower tuning. Whether you prefer sealed or ported boxes, the ZXI15.4D will excel in both, giving you the flexibility to optimize placement in any vehicle. It’s dual 4-ohm configuration and 3-inch voice coils, makes the ZXI15.4D a force to be reckoned with. Handling a staggering 1000W RMS power and 2000W of MAX power, ensuring you get the full potential out of your system. The large foam surround and non-pressed paper cone work in perfect harmony, delivering crisp, smooth bass that permeates every corner of your vehicle.

The ZXI15.4D goes beyond raw power and precision. It features a strong stamped basket adorned with show-quality DS18 logos on the frame, magnet boot, magnet, and dust cap. The quad stacked magnets on the ZXI15.4D offer a multitude of benefits, including increased magnetic field strength, improved power handling, enhanced cone control, higher excursion capabilities, greater durability, and superior heat dissipation. Not only will it impress your ears, but it will also outlast any vehicle. This subwoofer is designed to provide you with crisp and clear bass for years to come. Immerse yourself in bass that is both thunderous and refined, thanks to DS18's commitment to quality and innovation.

Products Highlights: 

• 15" High Excursion Subwoofer
• MAX Power: 2000 Watts
• RMS Power: 1000 Watts
• Impedance: 4-Ohm 3" DVC
• Quad Stacked Ferrite Magnet
• 89dB

Specifications:

• Nominal Diameter: 15" / 381mm
• Nominal Impedance: 4 + 4 ohms
• RMS Power Handling: 1000W
• Maximum Power Handling: 2000W
• Sensitivity (1w/1m): 89dB
• Frequency Response: 15Hz-900Hz
• Recommended Lo Pass Crossover: 90Hz

Motor: 

• Voice Coil Diameter: 3" / 76.2mm
• Voice Coil Former Material: Black Aluminum
• Winding Material: CCAW
• Cone Material: Non-Pressed Paper
• Dust Cap Material: PPI
• Surround Material: Foam
• Basket Material: Aluminum
• Basket Color/Finish: Black Sandblasted
• Magnet Material: Ferrite
• Magnet Weight: 232 Oz (4 x 58 oz)
• Displacement Volume: 5.82L / 0.2ft3

Thiele & Small Parameters:

• Equivalent Volume (Vas): 77.82L / 2.748ft3
• Free Air Resonance (Fs): 28Hz
• Mechanical Factor (Qms): 7.641
• Electrical Factor (Qes): 0.632
• Total Factor (Qts): 0.516
• Moving Mass (Mms): 351.991g
• Compliance (Cms): 0.085mm/N
• Bl Factor (Bl): 27.244
• Voice Coil Inductance (Le): 63.14 mH
• Diaphragm Area (Sd): 804.25cm2
• DC Resistance (Re): 3.6+3.6 ohms
• Efficiency Bandwidth Product (EBP): 44.3

Recommended Enclosures: 

• Sealed Internal Volume: 56.6L / 2ft3
• Sealed Box Output Response F3: 32Hz
• Ported Internal Volume: 79.3L / 2.8ft3
• Port Size *Square (W x H x Long): 1.6" x 15" x 23.46" / 40.6 x 381 x 595.9mm
• Port Tuning Frequency FB: 28Hz
• Ported Box Output Response F3: 25Hz

Measurements: 

• Overall Diameter: 15.65" / 397.5mm
• Overall Depth: 10.51" / 267mm
• Front Mount Baffle Cutout: 13.96" / 354.7mm
• Mounting Depth: 8.72" / 221.5mm
• Motor Diameter: 7.48" / 190mm
• Gross Single Unit Weight: 39
• Dimensions (W x L x H): 17.5 x 17.5 x 13