Box Building 101

Stop guessing and start building. Subwoofer Box Building 101 is the complete box math, start to finish — sealed, ported, and slot-ported designs explained in plain English.

Inside:

• Box volume math made simple — no engineering degree required
• Port area, port length, and tuning frequency — how they work together
• Sealed vs ported: when to use which, and why
• Slot ports, round ports, and aero ports
• Cut lists and build direction that actually make sense
• The mistakes that kill output (and how to avoid them)

40 pages. Written by a builder who's been doing this for decades — not a textbook, a workshop manual.

Fair price. Honest value. No gouging.

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