BOX TUNING: HOW LOW SHOULD YOU GO?

Every ported box has a number baked into it the day the glue dries — and most people pick that number by copying a stranger on a forum. "Tune to 28 Hz, bro." That's not engineering. That's a rumor with a saw.

Box Tuning: How Low Should You Go? explains port tuning in plain English: what the number means, the real tradeoff between tuning low (deep, flat, honest) and tuning high (loud, peaky, one-note), and one graph showing three tunings on the same box so you see the peak move and the unloading cliff with your own eyes. You'll learn why the subsonic filter is your tuning's bodyguard, why port area matters as much as tuning, why 35 Hz in a sedan sounds nothing like 35 Hz in an SUV (cabin gain), and the Tuning Worksheet with the actual port-length formula — so you never borrow somebody else's number again.

15 pages. PDF