2019–2025 GM Crew Cab Dual Hertz MP 250 D2.3 10" Subwoofer Box Plans
Subwoofer Box Plans for (2) Hertz Mille Pro MP 250 D2.3 10" – Ported Truck Enclosure
Build a clean, accurate, and SQ‑focused ported enclosure for two Hertz Mille Pro MP 250 D2.3 10" subwoofers with these precision‑engineered subwoofer box plans designed specifically for the 2019–2025 Chevy Silverado & GMC Sierra Crew Cab. This enclosure maximizes under‑seat airspace, airflow efficiency, and low‑end extension while maintaining full rear‑seat functionality.
The Hertz MP 250 D2.3 is known for its exceptional sound quality, tight response, and rich low‑frequency detail. This enclosure provides the ideal airspace, port area, and tuning frequency needed to deliver warm, musical, and powerful bass inside the GM truck cabin — perfect for SQ‑oriented daily listening.
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 clean, high‑quality 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 Hertz MP 250 D2.3 10" Subwoofers – 2019–2025 GM/Chevy/GMC Crew Cab
- Woofer Type: (2) Hertz Mille Pro MP 250 D2.3
- Woofer Size: 10"
- Outside Dimensions: FH11” x RH6 11/16” x W52” x D12”
- Requires NO Seat Lift
- Tuning: 33Hz truck‑optimized ported design
- Performance Notes: Engineered for warm, accurate bass with excellent detail, smooth response, and strong in‑cabin efficiency
May work for other 10" woofers — user discretion advised.
Why These Plans Perform
- Optimized specifically for dual Hertz MP 250 D2.3 10s
- 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 SQ‑focused daily setups needing clean, musical, and detailed bass
- Eliminates trial‑and‑error and prevents wasted materials