13 pages, every number computed

Ceiling Speaker Spacing by Ceiling Height

How far apart ceiling speakers go at every ceiling height from 8 to 32 feet, at edge to edge, minimum overlap and tight overlap, with the speaker count for four common room sizes and the coverage formula behind all of it.

How Far Apart Should Ceiling Speakers Be at 8 Feet? With a 8 foot ceiling and a typical 90 degree ceiling speaker, each speaker covers a circle about 8 feet across at seated ear height. Space them 8 feet apart for edge to edge coverage, 5.7 feet apart for minimum overlap , which is the normal choice for speech, or 4 feet apart for tight overlap where intelligibility is critical.
How Far Apart Should Ceiling Speakers Be at 9 Feet? With a 9 foot ceiling and a typical 90 degree ceiling speaker, each speaker covers a circle about 10 feet across at seated ear height. Space them 10 feet apart for edge to edge coverage, 7.1 feet apart for minimum overlap , which is the normal choice for speech, or 5 feet apart for tight overlap where intelligibility is critical.
How Far Apart Should Ceiling Speakers Be at 10 Feet? With a 10 foot ceiling and a typical 90 degree ceiling speaker, each speaker covers a circle about 12 feet across at seated ear height. Space them 12 feet apart for edge to edge coverage, 8.5 feet apart for minimum overlap , which is the normal choice for speech, or 6 feet apart for tight overlap where intelligibility is critical.
How Far Apart Should Ceiling Speakers Be at 11 Feet? With a 11 foot ceiling and a typical 90 degree ceiling speaker, each speaker covers a circle about 14 feet across at seated ear height. Space them 14 feet apart for edge to edge coverage, 9.9 feet apart for minimum overlap , which is the normal choice for speech, or 7 feet apart for tight overlap where intelligibility is critical.
How Far Apart Should Ceiling Speakers Be at 12 Feet? With a 12 foot ceiling and a typical 90 degree ceiling speaker, each speaker covers a circle about 16 feet across at seated ear height. Space them 16 feet apart for edge to edge coverage, 11.3 feet apart for minimum overlap , which is the normal choice for speech, or 8 feet apart for tight overlap where intelligibility is critical.
How Far Apart Should Ceiling Speakers Be at 14 Feet? With a 14 foot ceiling and a typical 90 degree ceiling speaker, each speaker covers a circle about 20 feet across at seated ear height. Space them 20 feet apart for edge to edge coverage, 14.1 feet apart for minimum overlap , which is the normal choice for speech, or 10 feet apart for tight overlap where intelligibility is critical.
How Far Apart Should Ceiling Speakers Be at 16 Feet? With a 16 foot ceiling and a typical 90 degree ceiling speaker, each speaker covers a circle about 24 feet across at seated ear height. Space them 24 feet apart for edge to edge coverage, 17 feet apart for minimum overlap , which is the normal choice for speech, or 12 feet apart for tight overlap where intelligibility is critical.
How Far Apart Should Ceiling Speakers Be at 18 Feet? With a 18 foot ceiling and a typical 90 degree ceiling speaker, each speaker covers a circle about 28 feet across at seated ear height. Space them 28 feet apart for edge to edge coverage, 19.8 feet apart for minimum overlap , which is the normal choice for speech, or 14 feet apart for tight overlap where intelligibility is critical.
How Far Apart Should Ceiling Speakers Be at 20 Feet? With a 20 foot ceiling and a typical 90 degree ceiling speaker, each speaker covers a circle about 32 feet across at seated ear height. Space them 32 feet apart for edge to edge coverage, 22.6 feet apart for minimum overlap , which is the normal choice for speech, or 16 feet apart for tight overlap where intelligibility is critical.
How Far Apart Should Ceiling Speakers Be at 22 Feet? With a 22 foot ceiling and a typical 90 degree ceiling speaker, each speaker covers a circle about 36 feet across at seated ear height. Space them 36 feet apart for edge to edge coverage, 25.5 feet apart for minimum overlap , which is the normal choice for speech, or 18 feet apart for tight overlap where intelligibility is critical.
How Far Apart Should Ceiling Speakers Be at 24 Feet? With a 24 foot ceiling and a typical 90 degree ceiling speaker, each speaker covers a circle about 40 feet across at seated ear height. Space them 40 feet apart for edge to edge coverage, 28.3 feet apart for minimum overlap , which is the normal choice for speech, or 20 feet apart for tight overlap where intelligibility is critical.
How Far Apart Should Ceiling Speakers Be at 28 Feet? With a 28 foot ceiling and a typical 90 degree ceiling speaker, each speaker covers a circle about 48 feet across at seated ear height. Space them 48 feet apart for edge to edge coverage, 33.9 feet apart for minimum overlap , which is the normal choice for speech, or 24 feet apart for tight overlap where intelligibility is critical.
How Far Apart Should Ceiling Speakers Be at 32 Feet? With a 32 foot ceiling and a typical 90 degree ceiling speaker, each speaker covers a circle about 56 feet across at seated ear height. Space them 56 feet apart for edge to edge coverage, 39.6 feet apart for minimum overlap , which is the normal choice for speech, or 28 feet apart for tight overlap where intelligibility is critical.

Researched, not professional advice. Every figure on these pages is computed from standard audio and video engineering formulas, which are shown on each page so you can check the working. They size equipment; they do not design a system. For a permanent installation engage a qualified integrator, have any flown loudspeaker signed off by a structural engineer or certified rigger, and have all electrical work done by a licensed electrician to your local code. As an Amazon Associate we earn from qualifying purchases.