Port Velocity Result Tile
How the port velocity tile flags vent air speed, warning thresholds, and non-applicable designs.
Direct answer
The port velocity tile reports the highest simulated front or rear port air speed and flags whether it crosses warning thresholds.
What it measures
- Peak port velocity in meters per second.
- Frequency of the peak velocity where a port exists.
- Default warning and severe-warning thresholds used by the API tile.
Why it matters
- High air speed is a practical warning for audible turbulence and compression.
- It can make an otherwise attractive vented alignment unrealistic.
- It helps decide whether to increase port area, add ports, lower power, or use a passive radiator.
How to read it in 00 Simulator
- Treat no result as not applicable for sealed and other non-ported alignments.
- Inspect the port velocity graph to see whether the peak is near tuning or in the main playback band.
- Remember that flare design, port placement, and enclosure construction affect audible noise beyond the simulation.
What good, warning, and bad usually look like
- Good
- Peak velocity stays below the chosen warning threshold at the intended playback power.
- Warning
- Velocity crosses the warning threshold but remains below severe levels in a narrow region.
- Bad
- Velocity is severe across useful bass frequencies or requires an impractical port area or length to fix.
Common false conclusions
- A port velocity warning does not prove audible chuffing in every build.
- A clean velocity number does not mean the port length and resonance are practical.
- Sealed and passive-radiator designs should not be compared on this tile as if missing data were zero risk.
App behavior notes
- The internal simulation API exposes this as the `portVelocity` tile.
- The tile checks both `portVelocity` and `rearPortVelocity` values when present.