A fixture Head groups channels belonging to one light output device within a multi-output fixture

A Head represents a single light-emitting unit within a fixture. Most fixtures have one head; bar fixtures (e.g., 8-cell LED bar) have multiple. Defining heads lets QLC+ treat each output individually in Fixture Groups and RGB Matrices. Head channels should be exclusive to that head — a shared master dimmer is not included in any single head’s definition. Heads belong to a Fixture Mode because different modes may provide different per-head channel counts. Index order should follow the physical fixture’s layout.

Examples

An LED bar with 4 RGB cells: 4 heads, each assigned 3 channels (R, G, B). The global dimmer channel is excluded from all heads.

Assessment

An 8-bar has a single master dimmer (ch 1) and 8 sets of RGB channels (ch 2–25). How many heads should be defined, which channels go in each head, and which channel is excluded from all heads?