Amplified music rules in Bozeman, MT — also called sound permit, PA system, or live music ordinances — set decibel limits, time-of-day restrictions, and when permits are required.
Amplified sound - loudspeakers, stereos, live bands, DJ rigs - is regulated in Bozeman under the general noise nuisance standard in Chapter 16, Article 6 of the Bozeman Municipal Code. Outdoor events with amplified sound on public property or at large venues require a city permit that sets end-times and conditions.
Bozeman does not have a separate decibel ordinance dedicated to amplified music; instead, loudspeakers, amplifiers, stereos, and live or recorded music fall under the Chapter 16, Article 6 prohibition on raucous noise that unreasonably disturbs others. Amplified music coming from a residence, bar patio, or vehicle that disturbs neighbors or carries into the public right-of-way can be cited under that standard. Organized outdoor events with amplified sound - concerts, festivals, and large gatherings on city property or in the downtown district - require a city special-event permit, which incorporates noise conditions and a defined end-time (commonly 10:00 p.m.). Downtown Bozeman's entertainment district and events like Music on Main operate under those permitted conditions. Outside of a permit, amplified sound is judged by the same reasonable-person nuisance test as other noise, with extra scrutiny late at night.
Amplified-sound violations are cited under Chapter 16 as municipal misdemeanors (up to $500 and/or six months jail). Officers can order the sound stopped; refusing can escalate the response. Permitted events that exceed their approved end-time or conditions risk losing the permit and future event approvals.
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