2008–2018 GM Crew Cab Quad MMATS Dreadnaught 8" Subwoofer Box Plans
Subwoofer Box Plans for (4) MMATS Dreadnaught 8" – Ported Truck Enclosure
Build an extreme‑output, competition‑grade ported enclosure for four MMATS Dreadnaught 8" subwoofers with these precision‑engineered subwoofer box plans designed specifically for the 2008–2018 Chevy Silverado & GMC Sierra Crew Cab. This enclosure maximizes every cubic inch of under‑seat airspace while maintaining full rear‑seat functionality.
The MMATS Dreadnaught 8 is known for its massive motor, ultra‑high power handling, and brutal low‑frequency authority. This enclosure provides the ideal airspace, port area, and tuning frequency needed to deliver violent lows, huge 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 extreme output 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
Quad MMATS Dreadnaught 8" Subwoofers – 2008–2018 GM/Chevy/GMC Crew Cab
- Woofer Type: (4) MMATS Dreadnaught 8
- Woofer Size: 8"
- Outside Dimensions: 11”FH x 8”RH x 54”W x 15”D
- Requires 2.5" Seat Lift
- Tuning: 34Hz 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 quad MMATS Dreadnaught 8s
- Designed to fit 2008–2018 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