Subwoofer Box Plans for Dual Sundown Audio X Series 12" – SUV/Hatchback Ported Enclosure
Build a clean, hard‑hitting ported enclosure for two Sundown Audio X Series 12" subwoofers with these precision‑engineered subwoofer box plans. Designed specifically for SUV and hatchback applications, this enclosure delivers extreme low‑end extension, high output capability, and the airflow needed to keep the X Series performing at its best. These plans give you the accuracy and tuning required to unleash the full potential of your X 12s in a daily‑driven or demo‑oriented setup.
Save Money — Build It Yourself
Stop wasting materials and guessing on dimensions. These DIY subwoofer box plans make it simple to build a professional‑grade enclosure at home. Perfect for anyone wanting massive bass without paying custom‑shop prices.
What’s Included
- Downloadable ZIP file
- Multiple 3D rendering images
- Spec sheet with subwoofer & enclosure specs
- Professional optimized cut sheet with parts list
- Precision‑designed ported enclosure layout
Designed For
Dual Sundown Audio X Series 12" Subwoofers — SUV/Hatchback Ported Enclosure
- Woofer Type: (2) Sundown Audio X Series 12
- Woofer Size: 12"
- Outside Dimensions: 20”H × 38”W × 18”D
- Tuning: 32Hz
- Based on manufacturer‑recommended specs
May work for other 12" woofers — user discretion advised.
Why These Plans Perform
- Optimized specifically for the Sundown X Series 12 — a high‑excursion, high‑power monster
- Designed for deep, powerful bass in SUV and hatchback‑friendly dimensions
- Smooth, predictable response thanks to proper port tuning and airflow
- Ideal for daily setups, demo builds, and high‑output systems
- Eliminates trial‑and‑error and wasted materials