DOWN4SOUND | DVX 18″ SUBWOOFER | D4 | 1700W RMS

The DOWN4SOUND DVX-18 D4 is engineered for listeners who demand authoritative, precise, and durable low-frequency performance. Built with a massive high-strength motor, extended mechanical throw, and a real premium carbon fiber dustcap, the DVX-18 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
68-lb heavy-duty construction designed for extreme 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): 6.050 ohm
Resonance Frequency (Fs): 28.036 Hz
Qms: 3.012
Qes: 0.659
Qts: 0.541
Mms (Moving Mass): 492.526 g
Cms (Compliance): 56.483 m/N
Rms (Mechanical Resistance): 0.803
Vas: 119.508 L
Sd: 113.411 cm
BL Product: 28.212 Tm
Sensitivity (SPL): 87.9 dB
Xmax: 33 mm
Displacement: 0.23 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: 7 cubic feet (net)
Tuning Frequency: 2832 Hz

This alignment provides deep low-frequency extension, high output, and low distortion suitable for daily music listening and large-cabin high-power builds.

Physical Dimensions

Cutout Diameter: 16.93 in (430 mm)
Mounting Depth: 11.17 in (299mm)
Motor Diameter: 8.98 in (228 mm)
Weight: 68 lb

Why Choose the DVX-18 D4

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

Ideal Applications

Large-cabin daily music systems
High-power demo builds
Trunk, wall, or 4th/6th-order enclosures
SQL (Sound Quality Loud) and SPL-leaning setups
Users seeking strong low-end response in the 2545 Hz range