The DOWN4SOUND TCX 18” Subwoofer D2 brings thunderous low-frequency response with advanced motor control and thermal durability. Built for demo applications and high-output systems, it features a massive 5-stack Y35 ferrite motor, oversized venting, and an ultra-strong carbon fiber cone.

At its core is a 3" 8-layer flat aluminum voice coil, designed for high power handling and heat dissipation. Combined with a lightweight cone and extended pole structure, the TCX-18 D2 moves massive air while staying tight and controlled.

QUICK NOTES

• RMS Handling: 2700W RMS
• Coil Size: 3 Inch – 8 Layer Flat Aluminum
• Impedance: Dual 2 Ohm (D2)
• Cutout Diameter: 16.75 inches / 425 mm
• Mounting Depth: 11.0 inches / 280 mm
• Weight: ~80 lbs
• Xmax: ~36 mm (one-way)
• Motor Size: 240 mm (9.45 in)
• Extended pole piece for deep linear excursion
• Dual flared pole vent to minimize turbulence
• Full gap and backplate venting for extreme thermal control

PRECISION ENGINEERING

With a BL product of 27.216 T·m and a lightweight yet rigid carbon fiber cone, the TCX-18 D2 produces extreme output while maintaining accuracy. The 8-layer coil allows for enhanced thermal dissipation and greater current handling at high power. A precision-engineered spider system and motor structure ensure cone control even at peak excursion.

Whether you're pushing 3k daily or demoing at max volume, the TCX-18 D2 delivers serious performance without compromise.

TECHNICAL SPECIFICATIONS

• Resonance Frequency (Fs): 30.207 Hz
• Sd: 113.411 cm²
• Mms: 620.257 g
• BL: 27.216 T·m
• Qms (Mechanical Q): 5.202
• Qes (Electrical Q): 0.598
• Qts (Total Q): 0.521
• No (Efficiency): 0.139%
• Sensitivity (SPL): 83.9 dB
• Vas: 24.882 L
• Cms: 39.745 μm/N
• Krm: 37.601 mOhm
• Erm: 0.553
• Kxm: 108.551 mH
• Exm: 0.623

RECOMMENDED ENCLOSURE

• Ported Box Volume: 5.0 – 6.0 cu ft
• Tuning Frequency: 30 Hz