Thiele-Small Parameters
Small-signal driver model, measurement state, fit, and large-signal limits.
Enclosures
Measured Driver Data Before Enclosure Design
Use calibrated impedance, model-fit residuals, a verified secondary T/S method, acoustic response, compression, and excursion evidence before treating a driver model as an enclosure design input.
Model → Build → Measure → Refit → Verify
An enclosure is a coupled driver, air volume, vent, loss, structure, filter, amplifier, and vehicle system. Start with measured parameters, keep every assumption visible, verify the as-built box, then measure the installed response and limits.
Open the guided Driver Parameters, Enclosure Modeling, And Verification lesson →
Canonical Topics
Sealed Alignment
Fc, Qtc, volume, leakage, stuffing, excursion, and installed response.
Vented Alignment
Box and port coupling, tuning, losses, excursion, filtering, and output.
Bandpass Alignment
Fourth-order, sixth-order, multi-chamber coupling, and hidden-driver limits.
Losses And Leakage
Leaks, absorption, port resistance, panel radiation, and model mismatch.
Port Airflow And Compression
Volume velocity, geometry, noise, nonlinear resistance, and tuning shift.
Net Volume And Displacement
Gross, internal, net, chamber, driver, port, brace, and printed geometry.
Vehicle Cabin Transfer
Measured source-to-seat response instead of one assumed cabin-gain slope.
Required Verification
- Driver measurement state and parameter source
- As-built net chamber volume and port geometry
- Low-level impedance and separate driver/port response
- Leakage, panel, port-noise, and compression checks
- Excursion, thermal, voltage, and protective-filter limits
- Vehicle transfer at the intended seat or listening region