A custom speaker programme succeeds or fails at the requirement stage. What to define first, and what each phase has to prove. ......
Mechanical constraints usually bind before acoustic ones do. How to sequence them, and where the structure has to yield. ......
A driver measured on the bench and the same driver in a product are two different systems. What changes, and how to close the gap. ......
Impedance and amplifier voltage together fix the power a driver receives. How to match a micro speaker to an amplifier rail, with 11 verified models. ......
Required SPL comes from distance, noise floor and content type — not from the highest number on a datasheet. A worked method with 12 published models. ......
Thickness is a budget, not a spec. How to allocate Z-height between driver, cavity and acoustic opening in thin devices, with 14 models. ......
Thickness is a budget, not a spec. How to allocate Z-height between driver, cavity and acoustic opening in thin devices, with 14 models. ......
Size and cavity volume act on the result through different mechanisms. Why diameter alone predicts resonance poorly, and how to derive the minimum cavity first. ......
Impedance is an amplifier decision, not a loudness decision. Why equal power ratings need voltages 1.414 times apart at 4 Ω and 8 Ω. ......
Rated power describes coil survival, not loudness. How power follows V²/R, why equal ratings need different voltages at 4 Ω and 8 Ω, and what to confirm first. ......