Cone Excursion Graph

How to read cone excursion in millimeters with Xmax, Xmech, and Xdamage references.

Direct answer

The cone excursion graph shows how far the active driver cone moves across frequency at the current input power.

What it measures

• Driver cone excursion in millimeters.
• Optional Xmax, Xmech, and Xdamage reference lines when available and enabled.
• The effect of EQ, filters, power, and enclosure tuning on movement.

Why it matters

• Excess excursion is one of the fastest ways to turn a good-looking response into an unusable design.
• It exposes below-tuning risk in vented alignments.
• It helps set protective high-pass filters and realistic power levels.

How to read it in 00 Simulator

• Compare the curve against the driver reference lines rather than only the axis scale.
• Check the lowest operating octave carefully, especially below vent tuning.
• Use band-limited peaks to decide whether a filter solves the issue or the alignment itself is wrong.

What good, warning, and bad usually look like

Good

Excursion stays below the chosen target line with margin through the intended band.

Warning

Excursion exceeds target only below the planned high-pass frequency.

Bad

Excursion crosses mechanical limits in the useful passband.

Common false conclusions

• A curve below Xmax is not a guarantee of inaudible distortion.
• A peak outside the intended band still matters if no high-pass filter exists.
• Driver count and wiring assumptions must match the real build before trusting the margin.

App behavior notes

• The UI graph id is `excursion`; the internal graph key is also `excursion`.
• Simulation values are stored in meters and displayed as millimeters.