# Baffle Layout

> Set a rectangular baffle and driver position for the baffle-step approximation, and inspect the resulting low-frequency shelf in SPL.

Source: https://simulator.00aud.io/docs/reference/tiles/baffle-layout

Use Baffle Layout to place the selected driver on a rectangular front panel. The dimensions and position feed the simulator’s smooth baffle-step correction.

- **Shows:** The selected driver on a rectangular baffle, with the model’s baffle-step transition and correction.
- **Healthy when:** Baffle dimensions and driver position match the intended cabinet, and the approximation fits your purpose.
- **If it is not:** Enable baffle step, enter the dimensions and place the driver; then inspect SPL.

## The tile

1. **Enable the model.** Switch on **Enable baffle step**. The layout and enclosure’s **Simulate baffle step** control refer to the same setting.
2. **Set the panel.** Type **Width** and **Height**, or drag the edge and corner handles. Dimensions are shown in millimetres.
3. **Place the driver.** Drag the driver or focus it and use the arrow keys. Shift makes larger moves. **Center driver** restores the centre position.

The readouts show the baffle dimensions, driver position, transition frequency and correction at the displayed reference frequency. Changing them changes the selected enclosure; it does not lay out several physical drivers or check cabinet bracing.

## What changes in the response

_Figure: The low-frequency shelf introduced by enabling the baffle-step model._

Sealed example at 1 W, half space, 1 m, with its default baffle-step geometry. Simulated when this page was built.

| SPL with baffle step | Peak | At |
| --- | --- | --- |
| Baffle step off | 85.4 dB | 392 Hz |
| Baffle step on | 82.6 dB | 392 Hz |

The default baffle for this driver is 300 × 450 mm. Its calculated transition is 364 Hz, with a 6 dB shelf depth. Wider effective baffles move the transition lower; offsetting the driver changes the effective edge distances.

> **A smooth approximation** The model produces a low-frequency shelf. It does not calculate individual edge-diffraction ripples, a measured polar response or room reflections. Treat the result as a broad response adjustment and verify the finished speaker with measurements.

## What to try

| Try | What it changes |
| --- | --- |
| Set the dimensions | Type **Width** and **Height**, or drag the baffle’s resize handles. |
| Place the driver | Drag the driver or use its arrow-key controls. **Center driver** puts it back in the middle. |
| [Check the response](https://simulator.00aud.io/docs/reference/tiles/spl) | Compare the low-frequency shelf in **SPL (dB)**. The model does not predict edge-diffraction ripple. |