A good home theater installation starts with the room. Pick a room you can make dark, size the screen to your seating distance, place the speakers for the seats, and treat the room’s acoustics before you spend more on gear. The tips below cover each step, from choosing the room to the final calibration, whether you are converting a spare room, finishing a basement or setting up a media room in your living space.
Choose the right room
A dedicated room gives you the most control over light, sound and seating. A living room can work well too, but you will be balancing the theater against daily use.
- Light: fewer windows is better. Any windows you do have need blackout shades or curtains.
- Shape: rectangular rooms are easier to get good sound from than square rooms, which tend to have uneven bass.
- Location: a room away from bedrooms, or a basement, keeps the sound from bothering the rest of the house.
- Power and wiring: check where you can run speaker wire and where the equipment will live. A closet or cabinet with ventilation is ideal.
If you are working with a lower level, our guide to a basement home theater covers moisture, low ceilings and sound isolation in more detail.
Size the screen to your seats
A common mistake is a screen that is too small for the room. A good rule is that the screen should fill about 30 to 40 degrees of your field of view from the main seat. For a standard widescreen TV or screen, that puts the main row roughly 1.2 to 1.6 times the screen’s diagonal away. Measure your seating distance first, then pick the screen.
Projector or TV?
| Projector and screen | Large TV | |
|---|---|---|
| Best for | Dedicated rooms you can make dark | Media rooms and living rooms with some daylight |
| Image size | 100 to 150 inches or more | Typically up to 100 inches |
| Brightness | Needs light control | Bright enough for a lit room |
| Setup | Mounting, screen, more calibration | Simpler to install |
If you choose a projector, a laser model keeps its brightness for years. If the room gets some light, an ambient light rejecting screen helps.
Surround system or soundbar?
A soundbar is a simple improvement over TV speakers in a small room. For a true home theater, a surround system with an AV receiver or processor, separate speakers and a subwoofer gives you far better dialogue, bass and sense of space.
- 5.1 or 7.1: three speakers across the front, two or four surrounds, and a subwoofer.
- Dolby Atmos: adds two or four height speakers in the ceiling, written as 5.1.2, 7.1.4 and so on.
- Subwoofers: two subwoofers give more even bass across the seats than one.
Place the speakers for the seats
- Front left and right speakers go at about ear height, angled toward the main seat.
- The center speaker sits directly above or below the screen, or behind an acoustically transparent screen. It carries most of the dialogue, so don’t skimp on it.
- Surround speakers go beside the seats, a little above ear height. Rear surrounds go behind the seats.
- Ceiling speakers for Atmos go slightly in front of and behind the main row.
- Try the subwoofer in several spots. Corners give more bass, but not always the smoothest bass.
Acoustics and soundproofing
These are two different jobs. Acoustic treatment makes the room sound better inside. Absorptive panels at the side wall reflection points, a rug on hard floors, heavy curtains and bass traps in the corners clear up echoes and boomy bass. Bookshelves and upholstered furniture help too.
Soundproofing keeps sound from leaking out to the rest of the house. It relies on mass and separation, such as extra drywall layers with damping compound, insulation in the walls, sealed gaps, and a solid-core door with weatherstripping. Soundproofing is far easier while the walls are open.
Plan the seating
- Center the main row on the screen and keep the main seat near the middle of the room and away from the back wall.
- For a second row, a riser lifts the back seats so heads don’t block the view.
- Leave a clear aisle and enough room for recliners to fully open.
- If the room is a multipurpose space, modular seating can be rearranged for game nights and parties.
Get the lighting right
Avoid bright overhead lights that reflect off the screen. Wall sconces, step lights and a dimmable LED strip behind a TV give you enough light to move around without washing out the picture. Put the lights on dimmers, ideally Lutron, so you can set a scene for movies and another for cleaning up.
Run the wiring properly
- Use speaker wire and cables rated for in-wall use where they run inside walls and ceilings.
- Run a wired network connection to the TV or projector and the streaming devices.
- Add conduit from the equipment location to the screen wall so you can pull new cables later.
- Keep power and low-voltage cables apart where you can to avoid hum.
Connect and calibrate
- Connect each source (streaming device, game console, cable box, disc player) to the receiver with HDMI, then run one HDMI cable from the receiver to the display.
- Connect the speakers to the matching channels on the receiver, checking polarity on each wire.
- Run the receiver’s room calibration with the microphone at the main seat, then at the other seats if it asks.
- Set the display to Movie or Filmmaker Mode as a starting point, then adjust brightness for your room.
- For a projector, set focus and zoom so the image fills the screen without using keystone correction if you can avoid it.
DIY or professional installation?
A TV, soundbar and a few speakers are a very doable weekend project. When the room needs in-ceiling speakers, a projector, sound isolation, lighting control and one remote for everything, a professional installer saves time and avoids costly mistakes like speakers in the wrong place or wiring you can’t reach later. A professional system also comes with programming, calibration and someone to call when something stops working.
If you want one remote, voice control and lighting scenes, our guide to upgrading to a smart home theater system covers the next step.
Common questions
How do I choose the right screen size?
Measure from your main seat to the screen wall, then pick a screen that fills about 30 to 40 degrees of your view. If you can, look at a few sizes in person before deciding.
Are wireless speakers good for a home theater?
Wireless surround speakers have improved and are fine for a living room. For a dedicated theater, wired speakers are still more reliable and give you more choices.
How important is theater seating?
It matters a lot, because you will sit in it for two or three hours at a time. Look for good support, room to recline and seats placed at the right distance from the screen.
Planning a home theater installation?
We design and install home theaters across Greater Boston, the South Shore and Rhode Island, and our theater work earned a CE Pro 2026 Home of the Year Bronze award. Book a free consultation or read more about our home theater installation services.
