DOWN4SOUND | DVX 15″ SUBWOOFER | D4 | 1700W RMS

The DOWN4SOUND DVX-15 D4 is engineered for listeners who demand authoritative, precise, and durable low-frequency performance. Built with a high-strength motor, extended mechanical throw, and a real carbon fiber dustcap, the DVX-15 delivers exceptional output and accuracy suitable for daily driving, demonstration builds, and high-power systems.
This model provides a true 1700W RMS power rating and a dual 4-ohm voice coil configuration for flexible amplifier matching and wiring options. Every component is designed for efficiency, cooling, and long-term reliability under significant sound pressure levels.

Key Features

1700W RMS power handling
Dual 4-ohm voice coil design
3-inch high-temperature voice coil
33 mm one-way Xmax for extended linear travel
Full carbon fiber dustcap for strength and rigidity
Advanced venting throughout the motor structure for improved cooling
65-lb heavy-duty construction designed for high output applications
8.66-inch (220 mm) motor diameter
Highly extended pole piece for increased linear throw
Pole vent flared on both ends for superior airflow and low noise

Technical Specifications (T/S Parameters)

Revc (DC Resistance): 2.050 ohm
Resonance Frequency (Fs): 30.413 Hz
Qms: 2.732
Qes: 0.534
Qts: 0.447
Mms (Moving Mass): 387.231 g
Cms (Compliance): 70.720 m/N
Rms (Mechanical Resistance): 0.803
Vas: 53.606 L
Sd: 73.062 cm
BL Product: 28.948 Tm
Sensitivity (SPL): 86.4 dB
Xmax: 33 mm (one-way)
Displacement: 0.20 cu ft

Engineering and Construction

Extended pole piece for improved linear performance and mechanical control
Dual-flared pole venting for low-noise airflow and efficient heat removal
Rear gap ventilation for reduced voice coil temperatures during sustained playback
8.66-inch (220 mm) motor diameter for substantial magnetic strength
Long-fiber spider system for reliable, consistent suspension behavior
Carbon fiber dustcap for reduced moving mass and enhanced rigidity

Recommended Enclosure
Ported Enclosure:

Volume: 4.5 cubic feet (net)
Tuning Frequency: 32 Hz
Port Area: 60 square inches (55 sq in minimum)
Example Slot Port: 4 in wide x 15 in tall x 29 in long

This alignment provides strong low-frequency extension, balanced output, and low distortion suitable for daily music listening and high-output builds. The recommended subwoofer port area of 60 square inches keeps port velocity low for clean, chuff-free bass at full power. If you increase port area, extend the port length to maintain 32 Hz tuning.

Physical Dimensions

Cutout Diameter: 14.21 in (361 mm)
Mounting Depth: 10.63 in (270 mm)
Motor Diameter: 8.98 in (228 mm)
Weight: 65 lb

Why Choose the DVX-15 D4

High output capability with accurate, controlled low-frequency reproduction
Durable design optimized for long-term performance in demanding systems
Flexible wiring thanks to the dual 4-ohm voice coils
Real carbon fiber dustcap adds both strength and professional appearance
Designed for users who require deep, powerful bass without sacrificing clarity

Ideal Applications

Daily music systems
High-power demo builds
Trunk or wall installations
SQL (Sound Quality Loud) and SPL-leaning setups
Users seeking strong low-end response in the 2845 Hz range