Question about adding an AMP to a 5.1 to 7.1 receiver - AVS Forum
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post #1 of 3 Old 02-26-2012, 02:32 AM - Thread Starter
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I'm curious about an idea i had, I'm sure it was probably posted before.
Anyway.

Lets say you got a 7.1 receiver, and it was Pre amp outputs, can you pair that with an Amp, says say Front left & right, so now the amp, you add 2 speakers to it,

making it so theres 9 channels of sound from 9 speakers?

or is my idea busted?
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post #2 of 3 Old 02-26-2012, 04:38 AM
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Quote:
Originally Posted by joejack11 View Post

I'm curious about an idea i had, I'm sure it was probably posted before.
Anyway.

Lets say you got a 7.1 receiver, and it was Pre amp outputs, can you pair that with an Amp, says say Front left & right, so now the amp, you add 2 speakers to it,

making it so theres 9 channels of sound from 9 speakers?

or is my idea busted?

9.1 isn't made by duplicating front left and right, its often made by adding side channels.

Here's a little mind experiment. If I take a single mono channel and duplicate it, do I have stereo? What you seem to be proposing to do is the same thing, only with more channels to start with.
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post #3 of 3 Old 02-26-2012, 08:49 AM
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The reason most people add a power amplifier to a receiver is to get more total audio power.

Many receivers don't have a big enough power supply, and the power available for each channel may drop down to 40 watts or so when all channels are driven.

By adding a stereo power amplifier to drive the front channels, the receiver has two less channels to drive and can do a better job with the rest.

Of course, you can't do this unless your receiver has preamp outputs for the front 2 channels, which many do not have.

There is very little source material that has been properly recorded or mixed for more than 5 channels, so the value of anything beyond 5 channels is a debatable issue.

It is also worth considering whether to spend money on more than 5 channels or whether to spend the same amount of money buying better speakers for the most important 5 channels.





Quote:
Originally Posted by joejack11 View Post

I'm curious about an idea i had, I'm sure it was probably posted before.
Anyway.

Lets say you got a 7.1 receiver, and it was Pre amp outputs, can you pair that with an Amp, says say Front left & right, so now the amp, you add 2 speakers to it,

making it so theres 9 channels of sound from 9 speakers?

or is my idea busted?

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