What Do AV Receivers Do?

In this article, we will discuss what AV receivers do and how they enhance your audio and video experience. You’ll learn about the different brands like Denon, Yamaha, Marantz, and more, as well as their features and capabilities. Whether you are a music enthusiast or a home theater lover, understanding what AV receivers can do will help you make an informed decision when it comes to choosing the right one for your setup. So, let’s dive right in and explore the world of AV receivers together!

What Do AV Receivers Do?

If you’re someone who loves watching movies or listening to music, you’ve probably come across the term “AV receiver” at some point. But what exactly is an AV receiver and what does it do? In this article, we will dive deep into the world of AV receivers and explore their various functions and features.

What is an AV Receiver?

An AV receiver, short for Audio/Video receiver, is a crucial component of any home theater or audio setup. It serves as the central hub that connects and controls all the audio and video sources in your system, such as Blu-ray players, game consoles, streaming devices, and speakers. Essentially, an AV receiver acts as the brain of your home entertainment system, processing and amplifying audio signals and providing video processing capabilities.

Components of an AV Receiver

To understand what AV receivers do, it’s important to have a basic understanding of their components. AV receivers consist of several key elements that work together to deliver a high-quality audio and video experience.

• Amplifier: One of the primary functions of an AV receiver is amplification. It takes the low-level audio signals from your sources and boosts them to a level that can drive your speakers. The power output of the amplifier is measured in watts per channel (WPC), and the higher the wattage, the louder and more dynamic the sound.

• Audio Decoder: AV receivers are equipped with built-in audio decoders, which are responsible for decoding various audio formats. These decoders can handle formats like Dolby TrueHD, DTS-HD Master Audio, and many others, ensuring that you can enjoy high-resolution, immersive soundtracks.

• Audio Processor: Besides amplification and decoding, AV receivers also include advanced audio processing capabilities. These processors enhance the audio quality by applying various algorithms and effects to the sound, creating a more immersive and realistic listening experience.

• Video Processor: Alongside audio processing, AV receivers also feature video processing capabilities. These processors improve the quality of incoming video signals by upscaling lower-resolution content to higher resolutions, such as from 1080p to 4K, and enhancing the color, contrast, and sharpness of the image.

How AV Receivers Work

Now that we know the key components of an AV receiver, let’s explore how these devices work. When you connect your audio and video sources to the AV receiver, it acts as a central junction point, routing the signals to the appropriate outputs and applying necessary processing along the way.

When you play a movie or music through your Blu-ray player or streaming device, the AV receiver receives the audio and video signals. The audio signals are sent to the amplifier, where they are amplified and then sent to the connected speakers. Meanwhile, the video signals are processed by the video processor, which can enhance the image quality and upscale it to match your display’s resolution.

AV receivers also provide various connectivity options to accommodate different devices. They typically feature multiple HDMI inputs and outputs, allowing you to connect multiple sources and route them to your TV or projector. Additionally, AV receivers offer analog and digital inputs for older audio sources, as well as wireless connectivity options for streaming from smartphones, tablets, or other compatible devices.

Audio Functions

One of the primary functions of AV receivers is to deliver high-quality audio. Let’s explore some of the audio-related features and technologies that AV receivers offer.

Amplification

As mentioned earlier, amplification is a crucial function of AV receivers. The built-in amplifier takes the low-level audio signals from your sources and boosts them to a level that can drive your speakers. The power output of the amplifier is measured in watts per channel (WPC), and a higher wattage generally translates to louder and more dynamic sound.

When choosing an AV receiver, it’s important to consider the power rating and impedance compatibility with your speakers. Ensuring that the receiver can deliver enough power to your speakers will guarantee optimal performance and prevent any distortion or clipping.

Audio Decoding

AV receivers come equipped with built-in audio decoders that can handle various audio formats. These decoders ensure that you can enjoy high-quality, immersive soundtracks that are encoded in formats like Dolby TrueHD, DTS-HD Master Audio, and more.

When connected to a Blu-ray player or other source that supports these audio formats, the AV receiver will decode the signals and process them for playback. This allows you to experience the full potential of the audio tracks, with detailed surround sound and dynamic range.

Audio Processing

In addition to amplification and decoding, AV receivers feature advanced audio processing capabilities. These processors enhance the audio quality by applying various algorithms and effects to the sound.

One common feature found in AV receivers is virtual surround sound. This technology simulates the effect of having multiple speakers placed around the room, even if you only have a stereo or 5.1 speaker setup. Virtual surround sound can create a more immersive audio experience, enveloping you in the soundstage and enhancing the overall movie-watching or music-listening experience.

Multi-Channel Audio Support

AV receivers also provide support for multi-channel audio, allowing you to enjoy surround sound formats like 5.1, 7.1, and even more advanced setups like Dolby Atmos and DTS:X. These formats utilize additional speakers placed around the room to create a more immersive and three-dimensional sound experience.

Dolby Atmos, for example, adds overhead speakers or modules to deliver sound from above, creating a true sense of height and dimension. DTS:X, on the other hand, enables object-based audio, where sounds can be precisely placed and moved around in a three-dimensional space. With an AV receiver that supports these formats, you can truly immerse yourself in your favorite movies and games.

Video Functions

While AV receivers are primarily known for their audio capabilities, many models also offer advanced video processing features. Let’s take a closer look at the video-related functions you can expect from an AV receiver.

Video Processing

An AV receiver’s video processor is responsible for enhancing the quality of incoming video signals. It can upscale lower-resolution content to match your display’s resolution, improving the overall image quality. For example, if you have a 1080p Blu-ray player and a 4K TV, the AV receiver’s video processor can upscale the 1080p content to 4K, resulting in a sharper and more detailed image.

Additionally, the video processor can also enhance the color, contrast, and sharpness of the image. This is particularly useful when watching older movies or content with subpar video quality. The video processor can analyze the incoming signal and apply appropriate adjustments to improve the overall viewing experience.

Video Upscaling

In addition to video processing, AV receivers often offer video upscaling capabilities. As mentioned earlier, this feature allows the receiver to upscale lower-resolution content to match the resolution of your display.

For example, if you have a DVD player connected to your AV receiver, which is then connected to a 4K TV, the receiver can upscale the DVD’s 480p resolution to 4K. While the upscaling process cannot magically create more detail than what’s in the source material, it can improve the overall appearance of the upscaled content.

4K and HDR Support

With the increasing popularity of 4K Ultra HD TVs and content, AV receivers have also caught up with the times. Many modern AV receivers support 4K video passthrough, allowing you to enjoy the full resolution of your 4K sources without any degradation.

These receivers also support High Dynamic Range (HDR), which enhances the contrast and color accuracy of the video, resulting in a more vibrant and lifelike image. HDR content makes use of an expanded range of brightness and color information, delivering a more realistic and immersive viewing experience. With an HDR-compatible AV receiver, you can fully appreciate the stunning visuals of your favorite movies and shows.

Connectivity Options

Now that we’ve covered the audio and video functions of AV receivers, let’s turn our attention to the connectivity options they provide. AV receivers come with various input and output options, ensuring compatibility with a wide range of audio and video sources.

HDMI Inputs and Outputs

HDMI (High-Definition Multimedia Interface) is the de facto standard for connecting audio and video devices. AV receivers usually offer multiple HDMI inputs, allowing you to connect devices such as Blu-ray players, game consoles, media streamers, and more.

These HDMI inputs can carry both audio and video signals, making it easy to route all your sources through the AV receiver and eliminate the need for separate audio and video connections. The receiver then outputs the combined signal to your TV or projector through the HDMI output.

Additionally, AV receivers often include HDMI features like Audio Return Channel (ARC) and Enhanced Audio Return Channel (eARC). ARC allows the receiver to receive audio signals from your TV, eliminating the need for a separate audio connection. eARC, on the other hand, is an enhanced version of ARC that supports higher-quality audio formats and two-way communication between the TV and receiver.

Analog and Digital Inputs

While HDMI is the primary connection method for most modern devices, AV receivers also offer analog and digital inputs for older audio sources. These inputs allow you to connect devices with RCA or optical/coaxial audio outputs, such as CD players, turntables, or older gaming consoles.

Additionally, AV receivers often have preamp outputs that can be used to connect external power amplifiers for more demanding speaker setups. This can provide additional flexibility and allow you to customize your setup to suit your specific needs.

Wireless Connectivity

In the age of smart devices and wireless technology, AV receivers have adapted to provide various wireless connectivity options. Wi-Fi and Bluetooth are the most common wireless features found in modern receivers.

Wi-Fi connectivity allows you to stream audio wirelessly from your smartphone, tablet, or computer directly to the receiver. This enables convenient playback of music from various streaming services or your personal collection without the need for physical connections.

On the other hand, Bluetooth connectivity allows you to connect your devices wirelessly and enjoy music or other audio content without the limitations of a wired connection. With Bluetooth capabilities, you can effortlessly stream audio from your smartphone, tablet, or any other Bluetooth-enabled device directly to your AV receiver.

Wireless connectivity options provide a convenient and hassle-free way to enjoy your favorite music or other audio content, giving you the freedom to control playback from anywhere within range.

Surround Sound Technologies

One of the key reasons people invest in AV receivers is to experience immersive surround sound. Let’s explore some of the popular surround sound technologies that AV receivers support.

Dolby Atmos

Dolby Atmos is a revolutionary audio format that adds height and dimension to traditional surround sound setups. It creates a three-dimensional soundstage by utilizing speakers placed not only around the room but also above the listener.

With Dolby Atmos-enabled speakers or dedicated ceiling speakers, AV receivers can deliver sound from above, enhancing the sense of realism and immersion. Sounds can be precisely placed and moved around in a three-dimensional space, creating a more lifelike and captivating audio experience.

DTS:X

Similar to Dolby Atmos, DTS:X is an object-based audio format that allows for precise placement and movement of sounds in a three-dimensional space. It provides a more immersive and immersive audio experience by utilizing additional speakers around the room.

DTS:X is compatible with various speaker configurations, from basic setups like 5.1 to more advanced setups like 7.1.4, which include dedicated overhead speakers. AV receivers that support DTS:X can decode and process the audio signals, allowing you to enjoy the full benefits of this immersive format.

Virtual Surround Sound

While Dolby Atmos and DTS:X provide the most immersive surround sound experience, not everyone has the space or budget for a full-fledged multi-channel speaker setup. This is where virtual surround sound technologies come into play.

AV receivers often feature virtual surround sound processing, such as Dolby Surround or DTS Virtual:X. These technologies use advanced algorithms to create the illusion of surround sound from a stereo or 5.1 speaker configuration. By manipulating the audio signals and applying psychoacoustic techniques, virtual surround sound can deliver a more immersive audio experience without the need for additional speakers.

Virtual surround sound is a great option for those who want to enhance their audio experience without investing in a full surround setup. It can provide a more spacious and engaging soundstage, making movies and music come to life in a whole new way.

Streaming and Smart Features

In today’s connected world, it’s no surprise that AV receivers have embraced streaming and smart features. Let’s explore the various streaming and smart capabilities that many AV receivers offer.

Music Streaming Services

AV receivers often have built-in support for popular music streaming services, such as Spotify, Tidal, Pandora, and more. These built-in apps allow you to access millions of songs and playlists directly from the receiver, eliminating the need for additional devices or apps.

Streaming services offer vast catalogs of music across various genres, making it convenient to discover and enjoy your favorite tunes. With the support of music streaming services, AV receivers provide a seamless and integrated way to access and control your music library.

Wireless Streaming

In addition to music streaming services, AV receivers also support wireless streaming from your personal music collection. Using the Wi-Fi or Bluetooth capabilities of the receiver, you can easily stream music from your smartphone, tablet, or computer directly to the receiver.

This enables you to enjoy your favorite songs, playlists, or podcasts without the limitations of physical connections. Whether you’re hosting a party or simply relaxing at home, wireless streaming capabilities provide the convenience and flexibility to control your audio playback from anywhere within range.

Smart Home Integration

With the rise of smart home devices, AV receivers have also embraced integration with popular smart home ecosystems. Many receivers support voice control through platforms like Amazon Alexa or Google Assistant, allowing you to command your AV system using simple voice commands.

Smart home integration lets you seamlessly control various functions of your AV receiver, such as volume control, source selection, and playback control, all with the power of your voice. This adds a new level of convenience and simplifies the overall home entertainment experience.

Room Calibration and Speaker Setup

Setting up a home theater or audio system can be a daunting task, especially when it comes to speaker placement and calibration. AV receivers often offer features and technologies to simplify this process and optimize the audio performance in your specific room.

Automatic Speaker Calibration

Many AV receivers include automatic speaker calibration systems, such as Audyssey or Yamaha’s YPAO. These systems use a microphone, usually included with the receiver, to measure the acoustic characteristics of your room and the performance of your speakers.

By analyzing the room’s reflections, speaker distances, and frequency response, the receiver’s automatic calibration system can determine the optimal settings for each speaker. This ensures that the sound is balanced and properly aligned, delivering the best possible audio performance.

Automatic speaker calibration takes the guesswork out of the equation and ensures that even novice users can achieve optimal audio quality without diving into complex manual adjustments.

Speaker Distance and Level Setup

In addition to automatic calibration, AV receivers allow manual adjustments for fine-tuning the speaker setup. You can adjust the distance and level of each speaker to align the sound and ensure a seamless audio experience.

By specifying the distances between the speakers and the listening position, the receiver can accurately calculate the audio delay for each channel. This ensures that the sound reaches your ears simultaneously, creating a cohesive and realistic soundstage.

Additionally, you can adjust the level or volume of each speaker to balance the sound. This allows you to compensate for differences in speaker sensitivity or quirks in your room’s acoustics, ensuring that the audio experience is consistent and enjoyable.

Room Acoustic Correction

AV receivers also offer advanced room acoustic correction technologies to address problematic room acoustics and further enhance audio quality. These technologies analyze the characteristics of your room and apply digital correction algorithms to compensate for any deficiencies.

For example, Audyssey’s MultEQ XT32 is a popular room correction system that can measure the room’s acoustic properties at multiple listening positions. It then applies precise equalization filters to adjust the frequency response and remove unwanted resonances or reflections, resulting in cleaner, more accurate sound reproduction.

Room acoustic correction technologies can significantly improve the audio quality, especially in rooms with challenging acoustics or irregular speaker placements. They allow you to maximize the performance of your speakers and create an optimal listening environment.

Multi-Room and Multi-Zone Capabilities

Another feature that sets AV receivers apart is their ability to distribute audio to multiple rooms or zones. Let’s explore the multi-room and multi-zone capabilities that these receivers offer.

Multi-Room Audio

If you have multiple audio systems or zones in your home, AV receivers can serve as a centralized audio source, distributing music to different rooms simultaneously. This means you can listen to the same music throughout your house or play different content in each room, all controlled from a single receiver.

AV receivers achieve multi-room audio by utilizing additional amplifier channels or dedicated preamp outputs. These channels can be connected to external power amplifiers or directly to active speakers in different rooms. The receiver allows you to select the desired audio source and control the playback independently in each room or zone.

Whether you’re hosting a party or simply want to enjoy music in every corner of your house, multi-room audio capabilities provide the versatility and convenience you need.

Zone 2 and Zone 3 Output

In addition to multi-room audio, AV receivers often offer dedicated Zone 2 and Zone 3 outputs for more advanced setups. These outputs allow you to send audio signals to separate audio systems or zones, in addition to the main listening area.

With Zone 2 and Zone 3 outputs, you can create a dedicated audio setup in another part of your house, such as a patio or a home gym. The receiver provides independent source selection and control for these zones, giving you the flexibility to enjoy different content in different areas.

User Interface and Control

To make the overall user experience more intuitive and convenient, AV receivers provide various user interface options and control methods. Let’s explore the different ways you can interact with an AV receiver.

On-Screen Display

Most AV receivers feature an on-screen display (OSD) that allows you to navigate and configure the receiver’s settings using your TV or projector. The OSD provides a graphical user interface that makes it easy to adjust audio settings, switch between sources, and access various features.

The OSD typically overlays on top of the video signal, allowing you to adjust settings while still seeing the content. This eliminates the need for a separate display or relying solely on the front panel of the receiver for control.

Remote Control Capabilities

AV receivers come with a dedicated remote control that allows you to control all aspects of the receiver’s functionality. The remote typically includes buttons for adjusting volume, switching sources, and accessing various audio and video settings.

Some receivers also offer programmable remotes or the ability to control multiple devices through a single remote. This can simplify the control of your entire home theater system, eliminating the need for multiple remote controls cluttering your living room.

Mobile Apps and Wireless Control

In addition to the dedicated remote control, many AV receivers offer mobile apps that provide enhanced control and convenience. These apps allow you to control the receiver directly from your smartphone or tablet, giving you access to all the features and settings in a more intuitive and user-friendly interface.

Mobile apps often provide additional functionality, such as music streaming control, access to streaming services, and advanced settings customization. With wireless control capabilities, you can conveniently adjust the audio settings, switch sources, or even power on/off the receiver from the palm of your hand.

Mobile apps offer a modern and streamlined way to interact with your AV receiver, providing greater flexibility and convenience, especially when you’re on the go.

Conclusion

AV receivers are the heart and soul of any home theater or audio setup, offering a wide range of functions and features that enhance your audio and video experience. From amplification and audio decoding to video processing and streaming capabilities, AV receivers provide a centralized hub for all your entertainment needs.

Whether you’re a movie lover, music enthusiast, or avid gamer, an AV receiver can greatly enhance your audio and video experience. With their advanced technologies and connectivity options, they ensure that you can enjoy immersive surround sound and high-quality visuals, along with the convenience of wireless streaming and smart home integration.

While AV receivers from various manufacturers like Denon, Yamaha, Marantz, and Sony may offer slightly different features and characteristics, understanding the core functions of an AV receiver can help you make an informed decision when choosing the right receiver for your home theater or audio setup.

So, the next time you’re shopping for an AV receiver, consider the audio and video functions, connectivity options, surround sound technologies, streaming capabilities, room calibration features, and control methods available. By choosing the right AV receiver, you can take your home entertainment to the next level and immerse yourself in a truly captivating audio and visual experience.