How the Thiele-Small alignment calculator works
Driver Fs, Qts, Vas, and target sealed Qtc yield recommended sealed box volume and Fc. EBP (Fs/Qts) suggests whether sealed or ported alignments are typical starting points.
Key terms
- Fs - free-air resonance of the driver.
- Qts - total Q at Fs; lower values suit smaller sealed boxes.
- Vas - volume of air with same compliance as the driver suspension.
- EBP - efficiency bandwidth product; guides ported vs sealed choice.
Frequently asked questions
- What is EBP? Efficiency bandwidth product (Fs/Qts); lower values favour sealed boxes, higher values suit ported designs.