Headroom Result Tile

How to read the headroom tile and its operating power, threshold power, safe power, crest factor, and limiting condition.

Direct answer

The headroom tile shows how much usable output margin remains before the design reaches a physical limit.

What it measures

• Operating power for the selected policy and operating point.
• Threshold power and max safe power calculated from thermal, driver excursion, passive radiator excursion, and port velocity limits.
• The limiting kind and, when available, the frequency where the limit occurs.
• Crest factor used to relate average and peak demand.

Why it matters

• It turns multiple physical limits into one output margin view.
• It helps distinguish amplifier power limits from driver, port, or passive radiator limits.
• It makes target SPL decisions explicit instead of relying only on one-watt curves.

How to read it in 00 Simulator

• Start with the limiting kind to see what runs out first.
• Use the limiting frequency to decide which detailed graph to inspect next.
• Compare threshold and max safe power when deciding whether a design has clean margin or only last-resort output.

What good, warning, and bad usually look like

Good

The design reaches the target with positive margin and no single limit crowding the passband.

Warning

One limit is close enough that small EQ, distance, or power changes could push the design over target.

Bad

The required target exceeds max safe power, or the limiting kind points to a hard physical constraint.

Common false conclusions

• More amplifier watts do not create headroom if excursion, port velocity, or thermal limits arrive first.
• A clean one-watt SPL curve does not guarantee clean high-output operation.
• Headroom depends on target distance and crest factor, so compare designs with the same assumptions.

App behavior notes

• The internal simulation API exposes this as the `headroom` tile.
• Headroom-limited API simulations can materialize threshold-clean and max-safe related simulations.