What is a Receiver?
A receiver is that big, heavy thing that you plug your speakers and other components into (like a Dvd player, Tv, Cd player, Xbox, PlayStation, iPod, and etc.). Its the "brain" of the show, really. The idea of connecting all your components to a receiver is the understanding of audio/video switching, allowing you to switch to dissimilar video sources (like Tv, Dvd, camcorder) on your Tv
and thus changing the audio source accordingly - all without touching anything but the receiver.
Of course, the main purpose behind audio/video switching with a receiver is to drive audio to external speakers, like surround sound or stereo speakers.
Most receivers have a plethora of inputs; up to 8 speakers and a subwoofer (more commonly, 5.1, or five speakers and a subwoofer), some video inputs, and even Hdmi inputs. You could plug your Xbox, Plasma, and Dvd player into the receiver and use one remote to switch in the middle of all the dissimilar video sources (games, Tv, Dvd video) and have your speakers pump out surround-sound. Let's start with inputs and outputs. If you don't understand something, read through the whole How-To as most of it will be explained in detail.
Keep in mind that a receiver is the hub of your whole home theatre, so this How-To will literally guide you through the basics of connecting your unblemished home theater.
So what the heck is all this 'stuff' on the back of your receiver?
I'm going to go over just about anything that you would find on the back of your receiver. The one I'm basing this guide off of is a Harman Kardon Avr-247 I'm going to start from the top left of the unit and work my way to the right, then I'll start at the left of the next row and so on.
The first three inputs are for antennas. An Fm antenna cable would slide on to the first jack while two speaker wires would plug into the remaining slots for Am. Of course, you don't have to plug your antennas in, but if you'd like Am/Fm reception through your speakers, you'll want to go ahead and do that. These are appropriate connections, so if you lose one of your antennas, just go buy another for a few bucks.
You've probably heard of composite video. Its a very basic video connection used by most any component (Tv, Dvd, Vcr especially). Its tasteless and its cheap. As such, its very low quality.
Composite uses an Rca cable for video (yellow) and two more Rca cables for audio (red and white, stereo). The problem is that a composite video cable combines luminance and chrominance in the same cable, reducing the potential of the picture. You lose a lot of sharpness, and the color begins to degrade from the traditional source. Its beneficial when you need the extra input or the gadget you're connecting only has composite video. Otherwise, use something else, like component video. Sounds similar; very different.
S-Video is next in line after composite. It uses a dissimilar type of connector (five pins in a circle) and gives you marginally great video quality. It is also a video-only cable, so you'll need to plug in audio separately. In this case, you'll probably use a pair of red and white Rca cables for your audio inputs.
Next up: a ton of composite audio inputs. These inputs use left channel and right channel Rca cables, typically red and white. They look just like the yellow composite video cable, and you could even use them for video and the yellow for audio, but let's keep the color scheme how it is ;) Composite audio is the bottom-of-the-barrel in audio. Its perfectly fine for most use, but if you're looking for high potential surround sound, you don't want composite. Game systems, like the Wii or Xbox, and very basic Dvd players are a exquisite match for composite audio.
The same goes to Vcrs, Cd players, and anything that only has a composite audio output. Plus, if you don't have surround sound, or your receiver is only two channels (2.1, stereo sound), you won't be able to use anything but composite audio. Note that there is a composite audio input under each composite video input so that it is easy to match them up. Plug them in the wrong inputs and you won't get sound when you're on that singular video input.
Here we have one of the least-used features of a modern receiver: 6 (or 8) channel direct input. This is only used for two purposes: Sacd or Dvd Audio. Sacd is an acronym for Super Audio Cd. It is a proprietary audio format advanced by Sony for extra Cds that are recorded in 5.1 surround sound. That means you need a Cd or Dvd/Cd player that supports Sacds, a receiver with Sacd preserve (as in the picture), and of course Super Audio Cd's. Dvd Audio is the same idea, dissimilar brand, dissimilar media (its a Dvd, not a Cd!).
Dvd Audio discs are extra Dvds that are recorded in 5.1 surround sound and can only be played by devices with preserve for them. These Cds go all the way up to 7.1 surround sound, meaning you would need to have two front, two rear, two side speakers and a subwoofer to enjoy full 7.1 surround sound. Most receivers preserve up to 7.1 now but you won't find Dvds with that kind of potential for movies. 5.1 surround is still the defacto standard, so don't run out and buy more speakers any time soon.
You could skip this next exiguous item because it is unique to this brand of receiver (Harman Kardon). The Bridge" is a proprietary connection they advanced for you to connect
an iPod. You need to buy a cut off component that includes a docking middle point and extra cables to join together the iPod. It fully integrates with the receiver, displaying
menus and songs on the front Lcd screen of the receiver. This allows you to literally pump your tunes through your speakers, whether it be stereo sound or full surround sound.
Of course, the music on your iPod is stereo sound, so the best you can get is simulated surround sound or stereo surround; the same music playing in the front two channels
is put through the rear and town channels. Some receivers do this more intelligently than others, but more on that later.
Here we have our high-end sound inputs/outputs. Basically the same doing wise, you have fiber optic connections (with the quadrate shape) and digital coaxial (just like an Rca cable).
Both of these are 100% digital, whereas composite is analog. The only way you can get true surround sound from any source is by using one of these connections (or the Sacd/Dvd Audio option)
Almost all Dvd players these days have whether optical or digital coaxial outputs (sometimes, both). Many high definition cable and satellite boxes also come with these
connections so you can enjoy 5.1 surround sound on high definition channels. Selecting in the middle of the two, there's literally no dissimilar in audio quality, so feel free to use
what you'd like (or what you're forced to).
I don't think I need an image for the next plug. Its a pair of power inputs. One is for powering the receiver, the other for anything you'd like. This way, when you turn
on the receiver, you give power to the other gadget (be it a Dvd player, Cd player, cable box, whatever). I don't necessarily propose this unless it specifically suits
your needs. It is beneficial if you're running low on outlets, of course.
Something else you'll never use: D-bus Rc-5 input/output. This is used for infrared remote controls to take over your home theater system. Honestly, its not something any of us will ever use. Some of the real high-end junkies might be using something for it, but I've never even come across a gadget that uses this technology. Stick to the remote that came with your unit, or buy a potential universal remote control. There's no need for this option. An alternate use for this may be a bit more common: if your receiver's front panel is blocked (like inside a cabinet), you could get an infrared transmitter to latch on to the front of it. This transmitter would hook up to another gadget somewhere in your room that will accept signals from your remote control. The receiving gadget then transmits the remote's commands to your receiver (via the transmitter you've attached to the front over the quarterly infrared transmitter).
Pre-outs , located right under the Remote in/out. Pre-outs are used when you'd like to add an amplifier to your system to boost the power (and hence volume/audio quality). Average
users will not use this for anything but the subwoofer preout. You'll want to run a subwoofer cable from your subwoofer to the subwoofer pre-out to contribute it with
the right frequencies. This is the allowable way to join together your subwoofer to your surround sound system. The other inputs won't be used unless you plan on adding
an amplifier. This is very unnecessary for home use. You might add an amp if you're trying to fill a room the size of a small house with enough sound, but you're not, right?
Here we ultimately get to the meat of the system: the speaker inputs! Harman Kardon receivers use bind posts for connecting speakers, as seen in the picture. They
work by being loosened up as your turn them counter-clockwise, then you sneak the speaker wire in underneath the caps and tighten them back up by turning clockwise. This'll
give your speaker wire a nice tug fit that probably won't loosen up on itself over time. Other brands may use other types of connectors, but bind posts are very common.
You might have been able to tell this is a 7.1 channel receiver because of the speaker inputs.
You've got room for 2 front left and right speakers, 2 rear left and right speakers,
a town channel, and two left and right "surround" channels which are located somewhere in in the middle of your front and rear speakers ("side surround", or 7.1). If you have enough
speakers, you can go ahead and plug in those extra 2 side ones, but they won't play any sound at all on a 5.1 Dvd. You would need a Dvd that supports 7.1
surround sound, and at this time, there just isn't a market for it. Cds will gladly blast stereo surround through all 7 speakers, though, so for some larger rooms, that's an
advantage.
Our final set of connectors for this receiver: component video . The best video you can get next to composite or s-video. You'll notice its a set of three cables (all for video),
usually Red, Green and Blue. Don't think that's what the cable does, though - it separates the video signal by luminance and two cut off color channels. In the past, component
did it in fact narrate R, G, B (splitting the traditional colors in transmit and recombining them at the destination device), but that is not used in current component video
connections. Component video can carry high definition signals, all the way up to 1080p, so it is the most cost sufficient and easily available high definition input.
Not seen on this receiver are Dvi and Hdmi, the two all-digital video connections.
Hdmi is the newest, fastest, sharpest video and audio connection available today. Its the only cable that can carry audio and video in one - not to mention, in high definition.
Hdmi must be supported by the source and the display you're connecting it to to use all of its features. Not all Dvd players, cable boxes, or receivers preserve both
audio and video in Hdmi. Its becoming more and more of a appropriate now to preserve both. The advantage is clear: less cable clutter, higher potential audio and video. You can get up
to 1080p high definition video and 7.1 surround sound through an Hdmi cable. Newer cable and satellite boxes, Dvd players, high definition Dvd players, and more high-priced receivers
support the full potential of Hdmi. Its the best you can get as all-digital goes.
The last connection for this report is Dvi. Dvi is also all digital like Hdmi, but it cannot process audio signals. Hdmi may contribute a technically first-rate image,
but I don't think anything could tell the difference. Dvi supports high definition video all the way up to 1080p, just like Hdmi. Its being used less oftentimes now,
but if you've bought a new computer or video card for your Pc recently, it probably has a Dvi (or two) port on it. Most computer monitors use Dvi now and video cards
have followed suit. Hdmi is edging its way into the Pc market, but its dominance is seen in the home theater arena.
Now that you've familiarized yourself with tasteless connections, let's plug it all together.
This part of the receiver How-To is going to guide you through hooking a 5.1 surround sound system(5 speakers and a subwoofer) with a high-definition Tv, a high-definition cable or satellite box, a Dvd player, and a 5.1 receiver.
Your Tv & Components
Where you put your Tv is dependent on how large it is, how large your room is, and where you will be sitting. If its 50 inches, don't sit more than 10-15 feet away; but no less, either.
A 60" set is exquisite for 12-20 feet. If you have a 32 inch set, try to sit no farther than 8-12 feet away. Your receiver, Dvd player, cable box, and other components should obviously be close together, but don't place them physically on top of each other. They all get hot, especially your receiver. If you have no other choice, slide a thin piece of plywood in the middle of the components to help dispense the heat.
Lay Out of Speakers
The first step is to lay out your setup. dissimilar rooms call for dissimilar locations for your speakers and subwoofer. If your room is a typical rectangle, go ahead and place your two front left and right speakers somewhere flush with the television on that side of the room. Your left speaker goes toward the left corner, right speaker toward the right corner. Don't bother with speaker wire yet (unless your speakers come with speaker wire attached already; in that case, just let them hang for now). Note that which speaker is left or right is solely dependent on how you join together them to your receiver. Your speakers aren't literally designated "left" or "right".
Depending on how you acquired your speakers, your front speakers could be larger than your rear speakers. That's how you know they're for the front. Otherwise, all your speakers are the same shape and size, and you can use each for any purpose.
One exception: the town channel. Usually, a town channel is much shorter and wider than your other speakers. It should only be used for the town channel. Sometimes, all 5 of your speakers could be the same, ordinarily on a very uncostly setup. You can use any of these speakers for any purpose.
Your town channel should all the time go whether directly on top or under your television set. However you have to do this, get it done! It's not called the town channel for nothing, you know. Any movie will pump out practically 90% of the voices you hear and a majority of the rest of the sounds through the town channel. It is a vitally foremost component to your surround sound setup.
Your subwoofer should all the time be on the floor. If it is impossible to place it on the floor, get it as close to the floor as possible. Placing it behind objections or in closets will diminish its effects. In a exquisite setup, the subwoofer would be on the floor close to the Tv (perhaps off to the left or right) in your line of sight. Nothing should block the side of the subwoofer that air will come out of (usually covered by a grill protecting the subwoofer speaker itself).
When it comes to looking a good spot for your speakers, you might want to mount them. You can ordinarily buy compatible speaker mounts online or in stores. You can also
use existing shelving, buy some shelving, or place them on tables or other objects. No matter how you do it, try to keep the speakers as close to ear level as possible. A speaker mounted at the ceiling of your room isn't going to give you the optimal aural experience.
The last thing to keep in mind about layout is speaker wire. You'll probably need at least 100ft of speaker wire, but you'll often find yourself using much more if you
try running wire through your ceiling, under carpeting, up through the basement, or around objects to conceal it. Take measurements and buy at least 10% more wire than
you think you need. You'll probably use it!
Cabling
You need to know the dissimilar kind of speaker wire available to you before setting up your home theatre. If you bought an Htib (home theater in a box), it probably came with 100ft of horribly cheap speaker wire. You don't want that! Do yourself a favor: buy some high-quality, 14-guage speaker wire. anything higher than 14-guage is just to thin and will be susceptible to interence, potential loss, and poor potential over longer distances. Fourteen guage is a good thickness and favorable for most home theatres. Make sure its also not too thick - some speaker wire simply will not fit in to the speaker wire jacks on some receivers.
Some receivers use proprietary speaker inputs. Sony is one example. Many Sony receivers have extra connectors for speaker wire and will not accept a appropriate speaker wire. You'll need to use whether the Sony-provided speaker wire, take the ends off of Sony speaker wire and put it on your own, or buy some of these extra connectors from Sony directly to place on your speaker wire. My recommendation? Avoid any receivers with non-standard speaker wire posts/jacks/connectors. Look for bind posts or other jacks that allow you to slide in and clamp down on a typical speaker wire.
Once you've got your speaker wire sorted out, you'll have to do some cutting and stripping if you opted to buy your own. This is way easier than it sounds, so don't worry!
Measure out each length one at a time, cutting the speaker wire with whether literally great scissors or a sharp blade. Now you need to strip the ends of the wire. Use whether a stripping tool or plain old scissors. You can place the scissors on the cable and gently apply some pressure as you twist the scissors around the cable, thought about slicing into the plastic coating. Eventually, it'll get weak enough that you can just slide it off by tugging on it with your fingers. You need at least 1/4" of exposed wire.
Now you can join together your speakers. Note on your speaker wire the incompatibility in the middle of the two ends. You'll need to use one as your obvious and one as your negative. Sometimes the coating is a dissimilar color in the middle of the two or there is text on one and not on the other. Keep track of this - whichever side you use for obvious on your speaker, use it for obvious on your receiver. Crossing the two can cause damage, whether immediately or sometime in the future. It might work this way but you don't want it to!
Connecting the speakers is easy enough. Front left to front left on your receiver, town speaker to town on your receiver, etc... Your rear speakers may be referred to as "Surround" or "Rear Surround" instead of just "Rear", but keep in mind, if you have a 7.1 or 8.1 channel receiver, "Surround" may indicate side surround speakers, not rear speakers.
Subwoofers
Your subwoofer is going to be a exiguous more complicated. There are a few dissimilar ways to do it and many variations of inputs/ouputs on the back side of subwoofers. I'm going to go with the most appropriate and sufficient recipe first.
You will need a subwoofer cable for connecting your sub. If you don't have one or don't want to buy one, you can substitute it for a appropriate red or white Rca cable (or a pair, since they are ordinarily connected; just let the other cable dangle). It will work, but its literally not the best way to do it. You'll also need whats called a Y adapter. On the back of your sub, there should be a left/right input (red and white). You plug the Y adapter in to these connections and then your subwoofer cable (or Rca cable) in the other end of the Y (note: if you don't have a Y adapter, just pick the left or right input to plug into).
Now, take the other end of your cable and plug it into your receiver's
subwoofer preout. Hopefully you have a powered sub, meaning it gets plugged into an Ac power outlet. All you need to do now is plug that in and your subwoofer is good to.
If you don't have Rca jacks on your subwoofer, or it only has speaker wire jacks (and its most likely not powered), you'll need to join together it the old fashioned way. Your front left and right speakers will plug into your subwoofer's ouput jacks instead of your receiver. You'll then run speaker wire from the left and right inputs on the subwoofer to your left and right speaker outputs on your receiver. This way, the subwoofer is powered by the receiver and will not work as well as a powered sub. You also take some power away from your front speakers with this method. A good idea is to buy a new, powered subwoofer with line in Rca jacks.
Connecting the Dots
You've got the hard stuff out of the way. Now stop it up by connecting your Tv, Dvd, and cable/satellite box. all the time try using the best options first. If your Dvd
has Hdmi and so does your receiver, use it. If your Dvd only has composite, s-video, and component, use component video cable. When it comes to audio, you literally need
to use digital coaxial (jacks are ordinarily orange) or fiber optic (usually the jack is recessed into the unit and has a door on it; when the door is open, a red light is visible). If you do not use whether of these two, you won't get true surround sound! When all else fails, resort to composite (red and white) audio connectors.
Note: Look intimately at the connections on your receiver. all is labeled, like the first set of red, green, and blue component video inputs might be labeled "Comp 1". If you're using composite audio cablesfor your sound, you'll need to plug them into the jacks that coordinate with "Comp 1". This might not be clear by looking at the receiver, so refer to your receiver's by hand to outline out which video inputs use which audio inputs. Most often, you'll be able to configure them from the receiver's internal menu using the remote control.
On some receivers, all the component video inputs, for example, are associated to a singular composite audio input (usually "Dvd"), so if you join together more than one of the component inputs, you will be contentious for sound when more than one gadget is active. This is why you'd want to configure the component inputs to use dissimilar audio inputs.
Your by hand is the only way to outline out how to go about it. Composite video will ordinarily match up to composite audio inputs with naming conventions like Video 1 -> Video 1, Video 2 -> Video 2, etc., but cables like component and Dvi may not. You should also configure digital audio inputs to match up with the video inputs you're planning on using. For example, if you're using a digital coaxial input (possibly "Digital 1"), and you use component video, you'll want to match "Digital 1" with "Comp 1". Again, refer to your users by hand for how to do this.
