It's okay to have unused amp channels since they let you grow your system down the road. Some receivers even let you use extra channels to power speakers in another room. A good rule of thumb is to stay within the power range of your speakers. Generally speaking, more power is better — it gives you stronger bass and clearer, louder sound, especially in larger rooms. It's okay for your receiver to have a little more power than your speakers are rated for.
If you're using high-end speakers, budget for a high-quality receiver to get the most out of them. All home theater receivers can play music through your front left and right speakers. Some receivers even have additional modes for playing music through all the speakers in your surround sound system.
Love playing vinyl? Look for models with a dedicated phono input for connecting a turntable. What you need to know to find the AV receiver that's right for you.
In this step-by-step guide, we show you how to set up your home theater receiver. Learn about placement, connections, calibration, network setup, and remote control. Our top picks for home theater receivers in What's the best place to set up your home theater receiver? This article offers helpful tips for deciding on the perfect spot. Dolby Atmos Music is the first immersive music format you can stream via online music services like Apple Music. How do you get it?
And how does it sound? Which type of speakers should you use for the rear channels of your home theater system? Bipole, dipole, or monopole? Learn about surround sound system design for small rooms. Find home theater gear that fits your space. How to connect your video sources to one receiver and watch them in different rooms. A lot can change in a few years. For free personalized advice, call Our Advisors have listened to most of the speakers we carry, and can help you make the best choice for your system.
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About the numbers By now, you've probably seen numbers like "5. Comments 45 Read comments. Charles Summers from Kirksville MO. Thanks so much for reaching out, Charles.
I recommend selecting "Dolby Enabled Speakers Front " during the speaker setup process. I actually have those same A90s toppers myself, and love them. I recommend running your receiver's speaker calibration system, and then play a movie clip with lots of overhead sound effects like the opening few minutes of Bumblebee when Cybertron is under attack.
If you find the Atmos channels aren't as loud as you like, manually raise their levels by one dB and replay the same scene. Repeat as needed until you get them dialed in — just be mindful of distortion. Hi Charlie, thanks for reaching out. I'm not familiar with your Nakamichi system, but trying cycling through the different modes and see if one stands out above the others.
Dialogue performance is a key differentiator, so a scene with strong spoken word is worth a watch. Hi Carsten, thanks for reaching out. I'm sorry to hear that you're having trouble with your gear.
Because of the limited space, however, matrixed surround signals came with some limitations. For instance, the surround channels in basic Pro Logic were not in stereo and had limited bandwidth. It was called Quadraphonic sound, and it first appeared on reel-to-reel tape. Unfortunately, Quadraphonic sound, which provided discrete sound from four speakers placed in each corner of a room, was confusing and short-lived — no thanks to companies battling over formats sound familiar?
Immersion in a three-dimensional audio sphere was not to be given up on, however. In , Dolby Laboratories introduced Dolby Surround, a technology that piggybacked a surround sound signal onto a stereo source through matrix encoding. Since then, Dolby, DTS, and others have helped advance the state of home surround sound with a variety of iterations. In the next section, we trace this evolution — from the standard 5.
Remember LaserDisc? Dolby took advantage of this and created AC-3, now known as Dolby Digital. This format improved on Pro Logic in that it allowed for stereo surround speakers that could provide higher bandwidth sound. All the information in Dolby Digital 5. Sorry, Keanu. To this day, Dolby Digital 5. Dolby more or less dominated the surround sound landscape for years. Then, in , DTS came along, providing its own digital surround sound mixing services for movie production, first hitting theaters with Jurassic Park.
The technology eventually trickled down to LaserDisc and DVD but was initially available on a very limited selection of discs. DTS uses a higher bit rate and, therefore, delivers more audio information. Think of it as similar to the difference between listening to a kbps and kbps MP3 file.
The quality difference is noticeable, but as with so many audio-related comparisons, not everyone is sold on it. The sixth speaker was to be placed in the center of the back of a room and was subsequently referred to as a back surround or rear surround. This is where some confusion began to swirl.
Recommended speaker placement, however, has always called for surround speakers to be placed to the sides and just behind the listening position. The point of the sixth speaker is to give the listener the impression that something is approaching from behind or disappearing to the rear. To make things even more confusing, each company offered different versions of 6. DTS, on the other hand, offered two separate 6. Just when people started getting used to 6. Like 6. Those surround effects that once went to just one rear surround speaker could now go to two speakers in stereo.
This development was enabled, in part, by the massive storage potential of Blu-ray. Those who bought a dedicated back surround speaker during the shift to 6. Dolby offers two different 7. Instead of using matrixing, it applies lossy compression to all of the discrete audio channels, which helps to take up less space on a Blu-ray disc.
But before that, you may want to read the first article in this series on audio processing if you need a simplified intro to the basics of digital audio. Sounds produced by stereo systems, comprising of a left and a right speaker, can only seem to originate from the front of the listener.
However, this configuration can create perceptions of left and right directions. The 5. Note : The subwoofer used for playing the LFE channel can be placed anywhere. The idea here is to split the side and rear sound effects. In this layout, two of the surround speakers are placed to the side of the listener close to 90 degrees and another two to the rear. Imagine scenes of an airplane flying overhead, birds flying across, or rain. Immersive sound aims to provide a close-to-real sensation of the visuals on the screen, placing you in the middle of the action.
Many immersive sound systems use height overhead speakers in addition to ground-level speakers. For example, a 7. Audio objects also open up possibilities for the personalization of audio delivered to consumers.
For example, many listeners might want to boost the dialogue a bit. But this feature requires a good deal of improvisation in the production workflow and infrastructure all across the ecosystem and not yet widely prevalent. We have talked about the number of speakers and their placement for surround and immersive sound.
The recording should have produced the channels tailored to be played on the front, surround, and LFE speakers. Then the codec should support the encoding and identification of all the channels in its bitstream. Finally, the playback system should have the needed number of speakers placed optimally.
In the case of object-based audio, audio objects soundtracks with associated metadata indicating spatial coordinates and other information useful for rendering also need to be embedded in the encoded bitstream. Recording, mixing, and encoding are part of program production.
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