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In contrast to the systems described above, this kind requires multiple amplifiers (at least one per source, but usually one per zone). This kind of system could be assembled from separate components (e.g. a splitter-router- matrix mixer , a processor, amplifiers and control panels), though knowledge of professional audio equipment and ...
However, whereas a 5.1 surround sound system combines both surround and rear channel effects into two channels (commonly configured in home theatre set-ups as two rear surround speakers), a 7.1 surround system splits the surround and rear channel information into four distinct channels, in which sound effects are directed to left and right ...
[2] [24] This is a compromise between the ideal image creation of a room and that of practicality and compatibility with two-channel stereo. [25] Because most surround sound mixes are produced for 5.1 surround (6 channels), larger setups require matrixes or processors to feed the additional speakers.
The channel input strips are usually a bank of identical monaural or stereo input channels arranged in columns. Typically, each channel's column contains a number of rotary potentiometer knobs, buttons, and faders for controlling the gain of the input preamplifier, adjusting the equalization of the signal on each channel, controlling routing of the input signal to other functional sections ...
The audio system requires at least a stereo power amplifier and two speakers, for stereo sound; most systems have multi-channel surround sound power amplifier and six or more speakers (a 5.1 surround sound system has left and right front speakers, a centre speaker, left and right rear speakers and a low-frequency subwoofer speaker enclosure ...
A single amplifier can usually power a woofer and a tweeter only through a post-amplifier crossover filter, which protects each driver from signals outside its frequency range. Bi-amping of speakers requires double the channels of amplification and can be accomplished using two ordinary amplifiers in either a vertical or horizontal arrangement.