Dolby Atmos sounds best when every speaker sits at the right angle from your main seat. The trouble is that the guidelines are written in degrees, and your room is measured in feet. This planner does the conversion: enter your room, ceiling height and seat position, choose a layout from 5.1 to 7.1.4, and get a plan of the room with where each speaker goes and how close each one is to the recommended angle.
- Front left and right: 22–30° either side of the screen center.
- Surrounds: 110–120° in a 5.1 system; 90–110° for side surrounds and 135–150° for rear surrounds in a 7.1 system.
- Overhead speakers: ideally 45° up from your seat, anywhere from 30° to 55°, in line with the front left and right. A .2 layout puts one pair directly above the seat.
- Ear-level speakers at seated ear height, about 3.9 ft (1.2 m), all aimed at the main seat.
How the planner works
It places the main seat on the room’s center line at the distance you enter, then works out each speaker’s position from its target angle. The front left and right go on the screen wall at 30° if the room is wide enough, keeping them at least a foot from the side walls; otherwise they move in and the angle shrinks. Surrounds go on the side walls at the target angle behind or beside you, and rear surrounds on the back wall.
For overhead speakers it subtracts seated ear height from your ceiling height. At 45° elevation, each overhead pair sits the same distance in front of or behind your seat as the ceiling is above your ears. If the room is too short, the pair moves as far as it can and the planner reports the angle you actually get.
Angle reference
| Speaker | Target | Where |
|---|---|---|
| Center | 0° | Above or below the screen |
| Front left and right | 22–30° | Screen wall, ear level |
| Surrounds (5.1) | 110–120° | Side walls, just behind the seat |
| Side surrounds (7.1) | 90–110° | Side walls, beside the seat |
| Rear surrounds (7.1) | 135–150° | Back wall |
| Top front, top rear | 45° up (30–55°) | Ceiling, in line with front L/R |
| Top middle (.2 layouts) | Overhead | Ceiling, above the seat, in line with front L/R |
Tips for real rooms
- Small adjustments are fine. Being a few degrees off barely matters; consistent distances and correct aiming matter more.
- Run room correction. Your receiver’s setup microphone sets levels and distances after the speakers are placed.
- Low ceiling? Dolby suggests overhead speakers be at least twice seated ear height. Below that, Atmos enabled up-firing speakers on top of the fronts and surrounds are an alternative.
- Subwoofer: place it with our subwoofer placement calculator, then align it with the distance and phase calculator.
FAQs
5.1.2 or 5.1.4?
Four overhead speakers give smoother front-to-back movement of sounds above you. Two above the seat is a good start if wiring the ceiling is hard.
Do the surrounds have to be at ear level?
Ear level is ideal. Dolby’s guidelines allow them a little higher, but keep the left and right at the same height.
What if my seat is against the back wall?
Surrounds end up beside you rather than behind, and 7.1 rears lose their effect. Move the seat forward if you can, or choose 5.1.x.
Can I use this for a soundbar?
No. Soundbars use their own built-in angles. This planner is for separate speakers and a receiver.