11B-706 Assistive Listening Systems — 2025 California Building Code
California Building Code (Title 24, Part 2) · 2025 edition · updated 2026-10-19 · California
CBSC: official editions, supplements and errata
Italicized text is a California amendment to the model code, as printed in the official publication.
Cite as: 2025 California Building Code (Title 24, Part 2) § 11B-706 · Effective January 1, 2026 · Official source: Building Standards Commission
11B- 706.1 General. Assistive listening systems required in assembly areas, conference and meeting rooms shall comply with Section 11B- 706 .
11B- 706.2 Receiver jacks. Receivers required for use with an assistive listening system shall include a 1/8 inch (3.2 mm) standard mono jack.
11B- 706.3 Receiver hearing-aid compatibility. Receivers required to be hearing-aid compatible shall interface with telecoils in hearing aids through the provision of neckloops.
11B-706.4 Sound pressure level. Assistive listening systems shall be capable of providing a sound pressure level of 110 dB minimum and 118 dB maximum with a dynamic range on the volume control of 50 dB.
11B- 706.5 Signal-to-noise ratio. The signal-to-noise ratio for internally generated noise in assistive listening systems shall be 18 dB minimum.
11B- 706.6 Peak clipping level. Peak clipping shall not exceed 18 dB of clipping relative to the peaks of speech.
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