USA & Canada broadcast radio spots (XR) loudness spec
What a file has to measure to pass this spec, and where each figure comes from.
| Check | Required | In LC-1 |
|---|---|---|
| Integrated loudness | −16.0 ±0.5 LUFS | Fixed with a level change |
| True peak | −2.0 dBTP max | Limited, with audition |
Worth knowing
If the file carries a slate, XR asks for at least 2 seconds of silence between the slate and the spot. The source gives no tolerance: ±0.5 LU is LC-1’s own working window.
Data source(s)
- XR North America radio spec
Figures taken from the documents above and last read on 10 October 2026.
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