> ## Documentation Index > Fetch the complete documentation index at: https://docs.nomn.jp/llms.txt > Use this file to discover all available pages before exploring further. # The SPATIAL Tab > The speaker layout editor, output roles, bass management, Spread and the listener position # The SPATIAL Tab The SPATIAL tab describes the room the bands are panned into. Its left column holds the **LISTENER** card, the **MODE** selector, the bass management controls (**XOVER** and **SUB**) and **SPREAD**; the rest of the tab is the speaker layout editor. ## Speaker layout editor The editor shows the layout as an isometric view of the room, marked **FRONT** and **BACK**, with the room's width, depth and height printed along its edges and a list of outputs beside it. Each output appears as a marker in the view and as a row in the list, with its X, Y and Z position and its **ROLE**. While audio plays, a ring around each marker shows that output's level. There are three ways to edit the layout: * drag a marker across the floor of the view, * type X, Y or Z values into an output's row, * choose a layout from the **LAYOUT** menu. **+ ADD SPEAKER** adds an output (up to 32). Adding to a named layout turns it into a Custom layout first. In a Custom layout with more than two outputs, each row has a **×** button that removes that output. Once a named layout has been edited, its name is shown with **(edited)**. ### The LAYOUT menu | Group | Layouts | | - | - | | Named layouts | Stereo, Quad, 5.1, 7.1, Atmos 5.0.4, Atmos 7.1.4, Atmos 9.1.6 | | Rings | Ring · 4, 6, 8, 12, 16, 24, 32 | | Cube | Cube · 8 | | Box | Box · 8, 16, 24, 32 | | Dome | Dome · 9, 17, 25 | | Saved | Layouts you have saved (shown once there is at least one) | | Custom | The current hand-built layout | In 5.1, 7.1, Atmos 7.1.4 and Atmos 9.1.6, output 4 is the LFE: its ROLE is **SUB** and it sits at Centre, so it takes no panned signal. Atmos 5.0.4 has 9 outputs, in the order L, R, C, Ls, Rs, then four height speakers (front left, front right, rear left, rear right), with no LFE channel. The ring, cube, box and dome entries are geometries named by their output count: a ring spaces its outputs evenly around the listener at ear height, and the cube, box and dome layouts add outputs above it. ### Saving and loading layouts **SAVE** writes the current layout to an `.xml` file and **LOAD** reads one back. Layouts saved in the default folder (`~/Library/Polytope/SpeakerLayouts/` on macOS, `%APPDATA%\Polytope\SpeakerLayouts\` on Windows) are listed under **Saved** in the LAYOUT menu, and other NOMN plugins that use the same editor read from the same folder. The current layout, including any hand edits and roles, is saved with your DAW session. Presets do not store the layout, so loading a preset leaves your speakers where they are. ### Matching the layout to your bus When CHAKRABOOST is inserted on a bus wider than stereo, it starts with that many outputs spaced evenly in a ring. For a standard bed, choose the named layout that matches your host's channel order (5.1 for a 6-channel bus, for example). Editing the layout switches Spatial Mode to Surround when the layout has more than two outputs and to Stereo when it has two, unless Headphone Preview is selected. In Stereo mode the editor shows the two stereo speakers, and dragging them reshapes the stereo field (see [Panner and Spatial Mode](/chakraboost/interface/spatial)). ## Output roles and bass management Each output has a role, set in its **ROLE** column: | Role | Behaviour | | - | - | | **FULL** | A full-range speaker. It receives its panned signal unfiltered. | | **SMALL** | A speaker that cannot reproduce deep bass. Its signal is high-passed at the XOVER frequency and the content below is sent to the SUB outputs. | | **SUB** | A subwoofer. It is left out of panning and receives the summed low end of every SMALL output. | The high-pass and low-pass filters meet at the same frequency, so a SMALL speaker and the sub together sum flat through the crossover, and they add no latency. If the layout has no SUB output, SMALL outputs behave as FULL so that no low end is discarded. Bass management runs in Surround mode only, before the output limiter, so the SUB outputs are limited and metered with every other output. | Control | Host name | Range | Default | Function | | - | - | - | - | - | | **XOVER** | Bass Xover | 40 to 200 Hz | 80 Hz | Bass management crossover frequency | | **SUB** | Sub Level | 0 to 100% | 100% | Level of the low end sent to the SUB outputs | Leave SUB at 100% for a flat response, since bass management moves the low end of the SMALL outputs to the SUB outputs at equal level; any other setting changes the summed level below the crossover. ## SPREAD **SPREAD** (0 to 100%, default 0%) widens every band across neighbouring speakers in Stereo and Surround. At 0% each band is a point between the nearest speakers; at 100% every speaker carries part of every band. ## LISTENER The LISTENER card sets where the listener sits in the room, with **X**, **Y** and **Z** controls from -1 to +1 (centred at 0). Dragging the listener marker in the layout view also moves the listener. Moving the listener changes the direction from which each speaker is heard, which changes how the bands are panned across the layout. The listener position applies in Stereo and Surround. ## Distance compensation In Surround mode CHAKRABOOST delays the outputs of closer speakers so that sound from every speaker arrives at the centre of the room at the same time. This delay is part of the latency reported to your host, and CHAKRABOOST reports the new value whenever a layout edit changes it; see [Output Protection and Latency](/chakraboost/features/output-and-latency). This documentation is built and hosted on [Mintlify](https://mintlify.com), a developer documentation platform.