2009–2025 Ford F150 Crew Dual Sundown Audio SA Classic 12" Subwoofer Box Plans
Subwoofer Box Plans for (2) Sundown Audio SA Classic 12" – Ported Truck Enclosure
Build a powerful, deep‑hitting ported enclosure for two Sundown Audio SA Classic 12" subwoofers with these precision‑engineered subwoofer box plans designed specifically for the 2009–2025 Ford F150 Crew Cab. This enclosure maximizes under‑seat airspace, airflow efficiency, and low‑end extension while maintaining full rear‑seat functionality.
The SA Classic 12 is known for its strong motor force, excellent daily performance, and signature Sundown low‑end authority. This enclosure provides the ideal airspace, port area, and tuning frequency needed to deliver tight, musical, and powerful bass inside the F150 cabin.
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 big, clean bass without paying custom‑shop prices.
What’s Included
- Downloadable ZIP file
- Multiple 3D rendering images
- Detailed spec sheet with subwoofer & enclosure specs
- Professional optimized cut sheet with parts list
- Precision‑designed ported truck enclosure layout
Designed For
Dual Sundown Audio SA Classic 12" Subwoofers – 2009–2025 Ford F150 Crew Cab
- Woofer Type: (2) Sundown Audio SA Classic 12
- Woofer Size: 12"
- Outside Dimensions: 12”FH x 9”RH x 54”W x 14”D
- Requires 3.5" Seat Lift
- Tuning: 34Hz truck‑optimized ported design
- Performance Notes: Engineered for strong low‑end extension, clean daily output, and excellent in‑cabin efficiency
May work for other 12" woofers — user discretion advised.
Why These Plans Perform
- Optimized specifically for dual Sundown SA Classic 12s
- Designed to fit 2009–2025 Ford F150 Crew Cab with proper seat lift
- Ported layout maximizes airflow and reduces turbulence
- Smooth, predictable response thanks to proper port tuning
- Ideal for daily setups needing clean, musical, and powerful bass
- Eliminates trial‑and‑error and prevents wasted materials