Transmit Clean Digital Audio with Digital Coaxial CablesWritten by Jon Martin
In world of digital audio, there are two types of cable to choose from; optical cables which use light to transmit signal and digital coaxial cable. These audio cables will enable your home theater system to transmit digital data between components. This will provide you with superior sound quality over typical RCA audio cables.
How Digital Coaxial Cable Works
Digital coaxial cables employ same principles as other coaxial cables. The inner conducting layer is surrounded by an outer conductor as well as rubbery insulating layer outside cable. The digital signal is sent through inner conductor as it travels between components. During course of its transmission, signal routinely comes in contact with outer conductor. The outer conductive layer is created with materials that act as a reflector for signal, thereby bouncing it back off of its surface. The signal will continue to reflect within confines of inner conductor until it reaches receiving component.
Dedicated to Digital Audio
Digital coaxial cable has only one purpose; to deliver digital audio between components. This is in complete contrast to RF coaxial cable which transmits both video and audio along same path. As you may suspect, dedicating entire bandwidth of cable to sending only digital audio has excellent ramifications for your home theater’s sound quality. This practice results in greater signal fidelity between transmitting device and receiving component. Greater signal fidelity means that sound you hear from your home theater speakers will be truer to way sound was originally recorded.
How to Place Home Theater SpeakersWritten by Jon Martin
You have your television and home theater receiver; you just bought your new speakers and subwoofer and are ready to test things out. It's time to break out measuring tape because precision is vital to achieving full potential of your home theater system. For this article, we are going to focus on a 5.1 surround sound system. The term "5.1" refers to number of speakers and subwoofers in system respectively. So for a 5.1 surround sound system, there are five speakers (the center channel, two front speakers, and two rear speakers) and one subwoofer. When placing your home theater speakers, try to use same amount of speaker wire for each type of speaker. For example, use same length of wire for each of front speakers. This will allow signal to reach each speaker in about same instant. I say “about” because there are variations in wire which could cause signal to reach one speaker slightly (fractions of a fraction of a second) before other. By making two lengths equal, you ensure that this delay remains tiny and unnoticeable.
Center Channel The center channel should always be placed either immediately above or immediately below viewing screen. Make sure speaker is pointed directly at audience.
Front Speakers The two front speakers should be same distance from audience as center channel. Doing this will ensure that sound will travel from each speaker to audience in same amount of time and reduce chances of there being a noticeable delay between what takes place on screen to when you hear it. Each of front speakers should also be positioned an equal distance from TV on either side. This distance is dependant on your specific tastes; just make sure that distances are both equal.