Down4Sound TCX 15" Subwoofer D1

The Down4Sound TCX 15" D1 is built to crush with control, engineered for both daily driving and demo abuse. It features a 3" 8-layer flat aluminum voice coil, carbon fiber cone, stitched surround, and triple-spider suspension system for stability under high excursion. Backed by a 5-stack Y35 ferrite motor and fully vented backplate, the TCX-15 D1 stays cool while delivering hard-hitting, clean bass.

Quick Notes

• RMS Power Handling: 2700W RMS
• Coil: 3" 8-layer flat aluminum
• Impedance: Dual 1Ω (D1)
• Cutout Diameter: 360 mm / 14.17"
• Mounting Depth: 270 mm / 10.63"
• Weight: 109.35 lbs (101.41 lbs net)
• Xmax: ~35 mm (one-way)
• Motor Size: 240 mm / 9.45"
• Extended Pole Piece: Deep, linear travel
• Dual Flared Pole Vent: Smooth, efficient airflow
• Full Gap & Backplate Venting: For thermal stability

Precision Engineering

With a BL product of 20.164 T·m and Fs of 28.944 Hz, the TCX-15 D1 delivers deep, musical bass with precision control. Its 8-layer voice coil boosts thermal durability and power handling, while the triple spiders and carbon fiber cone maintain alignment and structural integrity at high excursion. This ensures your bass stays clean, brutal, and consistent.

Technical Specifications

• Resonance Frequency (Fs): 28.944 Hz
• Sd: 113.411 cm²
• Mms: 570.678 g
• BL: 20.164 T·m
• Qms: 3.782
• Qes: 0.469
• Qts: 0.417
• No (Efficiency): 0.195%
• Sensitivity (SPL): 84.9 dB
• Vas: 38.870 L
• Cms: 51.958 µm/N
• Krm: 24.110 mΩ
• Erm: 0.624
• Kxm: 74.417 mH
• Exm: 0.588

Recommended Enclosure

• Ported Volume: 3.25 – 4.0 cu ft
• Tuning Frequency: 31 Hz

Why Choose the TCX 15" D1?

The TCX-15 D1 is a high-output subwoofer designed for clean, deep, and controlled bass. From its massive 5-stack motor to its stitched surround and advanced venting system, it’s engineered to take abuse and deliver uncompromising low-end power for both competition and daily builds.