The quality of the picture and sound depends on the choice of cable for your home theater system. To select a wire, it is important to know the features of all types of cables.
Instructions
Step 1
A digital cable is used to connect audio devices. The cable is an insulated metal conductor with a braid, shielding it from external noise. They connect, for example, a multiplayer to a receiver. This cable carries both stereo and multichannel signals. Experts recommend that the resistance of this cable is 75 ohms, while this resistance does not distort the data. Digital cable with RCA connectors is the most commonly used wire in audio engineering.
Step 2
In an optical wire for data transmission, a light signal is used, which is repeatedly reflected in a transparent glass fiber, without leaving it, electricity does not participate in this process at all.
Coaxial cable provides a wider signal path than optical cable and is also used in audio systems.
Step 3
In an audio system, the elements can also be connected with analog cables that transmit low-level analog audio data. The stereo effect is provided by two of these cables. They can be balanced or unbalanced, the difference is in the number of conductors under the cable sheath. Unbalanced cables are less susceptible to external interference and are therefore used for long distance data transmission.
Step 4
High-level audio is carried using an speaker cable that contains a pair of wires that connect to different speakers. When choosing a speaker cable, you should pay attention to its resistance, it should be as low as possible. The resistance of the cable depends on both the materials of the cable and its length. Music lovers choose shorter cables, so there is less signal loss. In addition, please note that the length of the cable should correlate with its cross-section, with a length of up to 7 m, choose a cable with a cross-section of 12 gauj (approximately 3.3 mm²), with a length of 9 m - 16 gauj (approximately 1.3 mm²). Longer cables are not used without signal amplifiers.
Step 5
The newest technology for transmitting signals in engineering is called HDMI. These cables do not lose digital signal as they increase in length. At the same time, there are some peculiarities that also force us to strive not to use cables longer than 10 m without amplifiers and signal repeaters.
