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Go Back   Blu-ray Forum > Audio > Audio Theory and Discussion


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Old 03-01-2008, 03:25 AM   #1
MatrixS2000 MatrixS2000 is offline
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Those are balanced inputs. Most people are familar with unbalanced RCA connections where the postive signal is on the centre post and the negative is on the sleeve. Balanced connectors have 3 connections. A +, - and ground. It's advantage is that it can carry a higher level signal and that an amp with balanced input should not have any hum.

Amplifiers are a pretty big discussion and all that most people look at is how much power the amp can make.

Here is a good page defining what all the specs mean.

Post back if you have any specific questions.
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Old 03-01-2008, 12:39 PM   #2
MatrixS2000 MatrixS2000 is offline
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Quote:
Originally Posted by guitarist155 View Post
That is a very good description of how balanced inputs work. The differentiating circuit is what eliminates things like hum and RFI.
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Old 03-03-2008, 12:13 PM   #3
welwynnick welwynnick is offline
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Quote:
Originally Posted by MatrixS2000 View Post
The differentiating circuit is what eliminates things like hum and RFI.
I think you probably meant differential amplifer there - the thing that gives the common mode rejection.

Nick
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