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The Magic Inside Dolby
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Learn how we support up-and-coming filmmakers during the creative process.
Get an inside look at how our team of scientists and engineers creates the magic behind your entertainment experiences.
Dolby in the Cinema
Be captivated by your favorite movies in Dolby sound.
Dolby Surround 7.1
Dolby Atmos Cinema Sound
Dolby Atmos propels you into the story with powerful, all-around sound.
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See your favorite movies in Dolby Atmos, Dolby Surround 7.1, or Dolby 3D.
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Transform your living room into a sophisticated home theater with amazing sound and true-to-life video quality.
The Evolution of Surround Sound
Dolby led the evolution of stereo sound into surround and beyond.
Dolby Vision captures the story with incredibly bright colors, ultra-dark blacks, and vivid hues.
Dolby on the Go
Stellar sound quality. All of your favorite content. Wherever life takes you.
Amazon and Dolby Are Changing Mobile
Learn how Dolby and Amazon are changing the way you enjoy mobile entertainment.
Rediscover the Magic of Life of Pi
Hear the difference Dolby audio makes when you watch Life of Pi on your mobile device.
Dolby at Work
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Dolby Voice Conference Phone
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We've reinvented the conference phone to deliver lifelike clarity and conversational ease.
Partners and Professionals
Find Dolby solutions, services, and support that can help you create more engaging products, content, and entertainment experiences.
PC and Mobile
Apply for a license to include Dolby technologies in your products.
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Surround yourself with sound.
Audio accounts for 50 percent of the cinema experience. That's why your sound system and room acoustics are every bit as important as your TV.
Good stereo can create a holographic space that puts the soundstage in front of you. But surround sound can create a whole new environment all around you.
Right now it seems to be a race: 5.1, 6.1, 7.1, 9.1, and even 11.1 speaker channels are available. Here's what you'll need to optimize different media:
A good 5.1-channel system can give you the full surround sound experience.
Going to 7.1 channels improves the directionality of sound effects and adds to the audio ambience of 3D.
A 9.1-channel format, like Dolby Pro Logic® IIz, adds a pair of front height channels. These added channels are derived from audio cues present in the signal.
More channels mean more speakers and more amplifier power, which add up to more money. You'll most likely be very happy with a 5.1-channel system.
If you're a dedicated audiophile or cinema enthusiast, and have both the room and budget, then by all means investigate the more complex setups.
And be sure to look into A/V receivers with Dolby technology.
There's no substitute for listening to the speakers you're thinking about before you buy. But where do you start?
With thousands of speakers out there, stores carry only a relative few. And side-by-side comparisons are often not that useful. For one thing, the showroom will sound much different than your listening area at home.
So make your room size your starting point.
Generally, smaller speakers won't play loudly enough in a big room, and large floor-standing models are wasted in a small room.
There is no correlation between speaker size and quality, and little between size and price. Many small speakers are of extremely high quality (and are usually priced accordingly). Having a small room doesn't mean you have to sacrifice quality.
Here are a few tips:
If a store doesn't let you use your own discs, shop somewhere else. And remember, none of us hears in exactly the same way. Trust your own ears.
Take a look at the Dolby Home Theater Speaker Guide for complete information on speaker placement for any configuration. You'll learn the advantages of each configuration and the role of each speaker.
If you choose a component system, the A/V receiver (also known as the AVR) is your control center and power source. It combines:
Everything in your home theater system connects to the A/V receiver. Be sure you get one with several HDMI® inputs and enough other inputs for all your sources. See the Connections tab under Choosing the Right TV.
If you play LPs or plan to, make sure the receiver has a phono input. If not, you'll need a separate phono preamplifier (which start at about $150).
The simple answer is "as much as you can afford." Look for a minimum of around 50 to 80 watts per channel.
You can't have too much power, but you can have too little. Surprisingly, small speakers sometimes require more power than larger ones. Check the power ratings for your speakers and don't go under that. It's best to get more power than you think you'll need.
See Power Ratings in the Buying Tips tab of this page for more details.
Nearly all A/V receivers now include room calibration to help you fine-tune your speaker placement. It uses a microphone (generally included) and self-generated test tones. The more expensive the receiver is, the more sophisticated the circuitry.
Full-featured A/V receivers offer many additional features that can improve your experience. Here are a few to look for:
Although the owner's manuals for A/V receivers can seem more complicated than the products themselves, reading some manuals before you buy can help you make a better choice and save you a lot of time later.
The use of separate components—specifically, power amplifiers and preamplifiers (or control centers)—is an alternative to A/V receivers. Advantages include:
The disadvantages of using separate components include:
These prematched systems offer a number of advantages:
Sound bars are a very room-friendly alternative to separate loudspeakers. Many offer "virtual surround," simulating a five-speaker setup from just two channels.
As with any system, there are trade-offs:
Your speakers need similar "sound signatures" to create the most convincing surround effects. Choosing all your speakers from the same manufacturer will help ensure that consistency.
Most of the major manufacturers now offer prematched home theater sets, saving you the trouble of finding the separate speakers yourself.
Most receivers include Dolby Pro Logic II (or IIx or IIz) that can generate surround sound from any stereo source:
The effect will vary, but live recordings in particular will deliver dramatic spaciousness.
If your receiver offers Music and Movie modes, use those modes for listening and viewing.
Strangely enough, MP3 music recordings that sound great through earbuds on your commute probably won't sound as good on your home theater, especially at higher volumes. MP3 files are highly compressed, and you'll hear the difference very quickly.
Receivers and amplifiers are rated in watts per channel. A typical specification (or spec) for an A/V receiver is 100 W × 5, meaning that each of the five channels can deliver 100 watts.
Ideally, all channels would be capable of delivering those 100 watts simultaneously, but this is usually the case only for top-of-the-line models or separate power amplifiers.
In everyday use, it doesn't matter that much—it's very rare for any movie soundtrack or music to reach peak levels in all five channels at the same time.
Although most speakers will play pretty loudly with only a few watts of input, you need the extra power to handle peaks, such as the sound of a gunshot.
Every 3 decibel (dB) increase in sound level (the minimum increase you can hear) requires doubling the power. A change in sound from 85 dB to 105 dB could easily mean going from 1 to 100 watts, even for an instant.
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