Reference · Tiles
TILEEVERY ENCLOSUREMMExcursion
- Shows
- How far the cone travels from rest, peak and one way, in mm at each frequency, against the driver’s Xmax.
- Healthy when
- The curve stays under the Xmax line through the band you will play, at the power you will use.
- If it is not
- A high-pass just below the tuning, less power, or more cone area.
The tile#
Excursion
mm
- 200 W21.2 mm at 10 Hz
The vented example peaks at 21.2 mm near 10 Hz across this plotted range. The driver’s Xmax is 13.5 mm. Open this example and hover for the travel at a particular frequency.
Each visible design has its own curve. Dashed Xmax lines use the drivers’ own limits; Xmech and Xdamage appear when the driver data includes them and excursion warnings are enabled. Multiple-entry horns also show the additional drivers.
Read the dip, then look below it#
Near the 32 Hz tuning, the port supplies much of the sound and cone travel falls. Below tuning the cone unloads, so falling SPL can accompany rising excursion. Judge the band you intend to reproduce, including anything left below the crossover.
The same box at different powers#
50 W
Excursion
mm
10.6 mm at 10 Hz; Xmax 13.5 mm
100 W
Excursion
mm
15.0 mm at 10 Hz; Xmax 13.5 mm
200 W
Excursion
mm
21.2 mm at 10 Hz; Xmax 13.5 mm
Reducing power to a quarter reduces peak travel to 0.50 times the original. A high-pass can instead reduce demand mainly below the useful band; inspect the filtered SPL as well.
What moves it#
| Change | What to watch |
|---|---|
| More power or bass boost | More travel wherever the voltage rises. Filters are included in the curve. |
| Change box volume or tuning | The dip and peaks move; recheck the complete working band. |
| Add a high-pass | Less travel below its corner, with less SPL there too. |
| Add another driver | Compare at the output you need, with wiring and power set correctly. |
What to try#
| Try | What it changes |
|---|---|
| A high-pass below the tuning | Below the tuning a port or passive radiator stops holding the cone back. Right-click the chart, choose Add filter and put a high-pass just under the tuning. |
| Less power | Travel follows the square root of power: half the power is about 0.7 times the excursion, and 3 dB quieter. |
| More cone area | A second driver, or a bigger one, moves the same air with less travel each. |
Ask your AI#
Ask your AI
Using 00 Simulator, check cone excursion against each driver’s Xmax at my workspace’s current powers. Identify the frequencies over the limit, then preview a high-pass that protects the useful band and compare its SPL before saving.
Connect your assistant so it can open your designs.