Choosing a receiver

In many ways, a home theater receiver is the most important part of a home theater system. Its primary task is to deliver audio to the speakers. However, many receivers are loaded with additional features that transform them into the theater's hub. Those features include switching capabilities, which can greatly simplify the task of getting various components, such as a Blu-ray player and a cable TV or satellite receiver, to coexist peacefully.

Most home theater receivers can accept and route audio and video through an all-digital HDMI connection, which means the typical rat's nest of wires found behind AV gear can be reduced to just a couple of cables. Many receivers also include sophisticated video processing features, such as upscaling, which optimizes standard-definition video input for display on an HDTV. Here are some other things to consider when shopping for a home theater receiver:

  • How many audio channels do you want or need? You'll see five-channel and seven-channel receivers. The advantage of the extra channels in seven-channel systems is that they can do a better job of creating a convincing surround-sound field. The disadvantage is that many listening locations can't easily accommodate proper placement of the additional speakers. Some receivers also have an additional subwoofer output for using two subwoofers in a room that's acoustically challenging.
  • Seven-channel receivers add flexibility. All seven channel receivers let you add two rear-center channels. Some (those equipped with Dolby Pro Logic IIz) let you use those channels instead to drive front-channel height or (in those receivers equipped with Audyssey DSX) front-channel wide speakers for a more immersive five-channel surround-sound field. If your speakers are compatible, the extra two channels can sometimes also be used to bi-amplify compatible front-surround speakers for better sound quality.
  • TV sound is better than ever. Many televisions are capable of delivering sound quality that's fine for casual viewing, and some can do even better than that. If you are not interested in creating a home theater experience, the sound system that's included with your TV might be all you need.
  • Don't forget the video. Delivering sound is still the most important factor, but home theater receivers also include video capabilities, making them the hub of a home theater system. All but the least expensive receivers can switch HDMI signals, and many can do video processing, deinterlacing signals and upconverting them to 1080p for output via HDMI. That can greatly simplify the job of hooking everything up. However, video processing is sometimes weaker than what's found in better video gear.
  • Auto setup can be helpful. Many receivers include sophisticated auto-setup routines that simplify the job of setting up the speakers. The best ones work relatively well, but results vary depending on the speakers and the room's acoustics. However, while audiophiles might still prefer to make settings manually, auto setup can help an inexperienced user get better results.
  • Check the manufacturer's policy before buying online. Some manufacturers have strict policies regarding authorized dealers. Denon, for example, clearly warns prospective buyers that their warranty is not valid if they don't purchase their receiver from an authorized retailer or if the serial number has been removed or replaced to prevent tracing the receiver's original source. Some retailers do offer their own warranties in such cases, but the decision on whether or not that's sufficient is one that should be carefully weighed.

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