Amplified music rules in Trinity County, CA — also called sound permit, PA system, or live music ordinances — set decibel limits, time-of-day restrictions, and when permits are required.
Trinity County has no general amplified-sound ordinance capping stereos or PA systems by decibel. The clearest published control is the Outdoor Festivals permit (Chapter 5.20): applicants must disclose loudspeakers and sound intensity in decibels at the premises boundaries (Sec. 5.20.040), and a permit may be conditioned or denied to prevent unreasonable noise. Other disturbances are handled as nuisances (Chapter 8.64).
The Trinity County Code does not include a stand-alone 'amplified sound' or 'loud music' chapter with a fixed property-line decibel limit for everyday use of stereos, speakers, or musical instruments - a full-text search for 'loud music' returns no results. The most specific regulation of amplified sound is Chapter 5.20 (Outdoor Festivals), which requires a County permit for outdoor music festivals and gatherings. The promoter must identify 'all loudspeakers and sound equipment to be used and the intensity of the sound, in decibels, at the boundaries of the premises' (Sec. 5.20.040), and the location of all loudspeakers. The Board of Supervisors may condition or deny a festival permit to ensure 'prevention of unreasonable noise,' and may impose operating conditions or suspend or revoke a permit where the event disturbs the peace. For routine amplified-music complaints - a loud backyard party, a bar sound system, an outdoor wedding that is not a permitted festival - the County relies on general public-nuisance authority under Chapter 8.64 and, where a land use is involved, the General Plan exterior-noise standards the Code references (55 dBA daytime / 50 dBA nighttime at the property line, cited at Section 17.43.060). Because Trinity County is entirely unincorporated, these County rules apply everywhere - there is no city amplified-sound permit scheme. There is no County sound-truck or door-to-door amplification ordinance; amplified sound on public roads falls under general nuisance and, on highways, the California Vehicle Code amplification provisions.
Operating an outdoor music festival without the Chapter 5.20 permit, or violating festival permit conditions on sound, can lead to permit denial, conditioning, suspension or revocation, and enforcement under the County's general penalty provisions. Other amplified-music disturbances are abatable as public nuisances under Chapter 8.64, which can result in an abatement order and penalties for noncompliance. There is no fixed County decibel-based amplified-music fine schedule outside the festival permit context.
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