Dual CT Sounds BIO 10" Down‑Fire Ported Subwoofer Box Plans
Subwoofer Box Plans for (2) CT Sounds BIO 10" – Down‑Fire Ported Enclosure
Build a clean, punchy, and deep‑hitting down‑fire ported enclosure for two CT Sounds BIO 10" subwoofers with these precision‑engineered subwoofer box plans. Designed for vehicles where protecting the subs is essential — SUVs, hatchbacks, trucks, and daily‑use builds — this enclosure delivers strong low‑end extension, excellent output efficiency, and the warm, musical sound the BIO series is known for.
Down‑firing designs shine in real‑world daily setups, and this enclosure gives the BIO 10s the airspace, port tuning, and structural layout they need to perform at their best while staying fully protected.
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 reliable, 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 down‑fire ported enclosure layout
Designed For
Dual CT Sounds BIO 10" Subwoofers – Down‑Fire Application
- Woofer Type: (2) CT Sounds BIO 10
- Woofer Size: 10"
- Outside Dimensions: 17”H x 18”W x 26”D
- Tuning: 33Hz down‑fire‑optimized ported design
- Performance Notes: Engineered for clean, musical bass with strong low‑frequency extension and excellent real‑world durability
May work for other 10" woofers — user discretion advised.
Why These Plans Perform
- Optimized specifically for dual CT Sounds BIO 10" subs
- Down‑fire design protects the woofers while enhancing cabin loading
- Smooth, predictable response thanks to proper port tuning
- Ideal for daily setups needing clean, musical, and reliable bass
- Designed for SUVs, hatchbacks, and any build needing woofer protection
- Eliminates trial‑and‑error and prevents wasted materials