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The Numbering system defines the number of speakers present in the system. The First number denotes the number of full range Audio Channels, those that are able to reproduce the higher frequencies, where most all the detail and audio information is produced. the last number declares the number of low frequency "Sub Woofer channels" that are used.
In a 5.1 surround system there should be 5 separate speaker enclosures, each attached to the audio source by separate wires on unique audio channels, PLUS 1 sub woofer channel.
A 2.1 surround system would have a more traditional "Stereo" arrangement with a single sub woofer channel.
It is possible to attach more than one speaker to a single audio channel, this does not change the numbering designation, because there is no change in the number of separate sound channels.
What else can I help you with?
What is the difference between FM 21-11 and FM 4-25.11?
FM 21-11 is numbered in the old system. FM 4-25.11 is numbered in the new system. The book is the same.
What is the difference of -22 and -1?
-21
What is 34 -13?
47
How do you find the difference between -8 and -29?
21
What two square numbers have the difference of 21?
The two square numbers with a difference of 21 are 25 and 4. This is because (5^2 = 25) and (2^2 = 4), and their difference is (25 - 4 = 21).
What is the difference between 89 and 21?
89 - 21 = 68
When was The Sound Inside created?
The Sound Inside was created on 2005-03-21.
When was The Sound of the Jam created?
The Sound of the Jam was created on 2002-05-21.
What is the difference between 55 and 21?
It is 55 minus 21 = 34
What is the common difference of the sequence 8 21 34 47?
The common difference is 13 because 21-8=13, 34-21=13, and 34-47=13.
What is the percent difference between 19 and 21 decrees Celsius?
10% difference.
When was West Sound FM created?
West Sound FM was created on 1990-05-21.
