2019–2025 GM Crew Cab Triple Gately Audio Alpha 8" Subwoofer Box Plans
Subwoofer Box Plans for (3) Gately Audio Alpha 8" – Ported Truck Enclosure
Build a violent, ultra‑efficient ported enclosure for three Gately Audio Alpha 8" subwoofers with these precision‑engineered subwoofer box plans designed specifically for the 2019–2025 Chevy Silverado & GMC Sierra Crew Cab. This enclosure maximizes every cubic inch of under‑seat airspace while maintaining full rear‑seat functionality.
The Gately Alpha 8 is known for its massive motor structure, extreme output capability, and clean low‑frequency performance. This enclosure provides the ideal airspace, port area, and tuning frequency needed to deliver brutal lows, strong cabin gain, and clean daily performance inside the GM truck 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 huge, 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
Triple Gately Audio Alpha 8" Subwoofers – 2019–2025 GM/Chevy/GMC Crew Cab
- Woofer Type: (3) Gately Audio Alpha 8
- Woofer Size: 8"
- Outside Dimensions: FH11” x RH6” x W52.5” x D15”
- Requires NO Seat Lift
- Tuning: 33Hz truck‑optimized ported design
- Performance Notes: Engineered for extreme low‑end output, fast transient response, and massive cabin gain
May work for other 8" woofers — user discretion advised.
Why These Plans Perform
- Optimized specifically for triple Gately Alpha 8s
- Designed to fit 2019–2025 GM 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 extremely powerful bass
- Eliminates trial‑and‑error and prevents wasted materials