Crossfire Subwoofer Box Plans – Engineered Enclosures for Extreme Output and Control
If you're running Crossfire subs, you're chasing more than just bass—you're after precision, power, and pressure. Our Crossfire-specific subwoofer box plans are built to match that mission. Each design is tailored to the unique parameters of Crossfire drivers, delivering the exact airspace, port tuning, and structural integrity needed to unleash their full potential.
Whether you're building a ground-pounding SPL setup, a clean daily driver with tight low-end, or a stealthy install that doesn’t sacrifice output, these plans give you the blueprint to make it happen. From the C5 and C7 series to the beastly XT3 and XSv4 lines, we’ve dialed in the specs to match Crossfire’s aggressive performance profile—so your system hits harder, plays lower, and stays reliable under pressure.
Read helpful info about Crossfire Audio below!
C3‑V3 Series – Affordable, Clean Bass for Daily Systems
The Crossfire C3‑V3 Series delivers reliable performance and smooth low‑end response without requiring big power. With RMS ratings around 400W and sizes from 10–12 inches , these subs are perfect for beginners, budget builds, and daily setups that need solid bass without stressing electrical systems. Our C3‑optimized box plans focus on efficiency and balanced tuning, giving you clean output and dependable performance in compact enclosures.
C5‑V3 Series – Stronger Motors, Bigger Output, Better Control
Stepping up from the C3 line, the Crossfire C5‑V3 Series brings more motor strength, higher RMS power (up to 800W), and tighter suspension for noticeably stronger output . These subs shine in well‑designed ported boxes where airflow and tuning can take advantage of their increased capability. Ideal for daily drivers who want deeper lows, more punch, and a more authoritative sound without jumping into competition‑level gear.
C7‑V3 Series – High‑Performance Daily/SQ‑Leaning Output
The C7‑V3 Series pushes into premium daily and SQL territory, offering higher power handling and more advanced motor design than the C5 line. While exact specs vary by model, the C7 family is known for clean, detailed bass with strong bandwidth and excellent control at higher volumes . Our C7‑specific box plans emphasize accuracy, low‑end extension, and tight response — perfect for builders who want musicality with serious output.
XT3 Series – Competition‑Ready Power and Aggressive Output
The Crossfire XT3 Series is built for high‑power street setups and entry‑level competition builds. With RMS ratings around 3000W and sizes from 12–18 inches , these subs are engineered for extreme output, heavy excursion, and high‑pressure environments. XT3‑optimized enclosures use large ports, reinforced bracing, and airflow‑efficient layouts to keep the sub stable under brutal power. Ideal for demo builds, SPL‑leaning daily systems, and anyone chasing serious loudness.
XT4 Series – Maximum Strength, Maximum Pressure, Maximum Output
The XT4 Series represents Crossfire’s top‑tier, built‑to‑order subwoofers — designed for extreme SPL, demo vehicles, and high‑voltage, high‑power applications. With RMS ratings around 3000–4000W depending on size and configuration , these subs feature massive motors, heavy‑duty soft parts, and structural reinforcement throughout. Our XT4‑specific box plans are engineered to handle violent air movement, huge port area, and the mechanical force these monsters generate. Perfect for competitors and hardcore demo enthusiasts who need maximum durability and output.