RCA Voltage and type questions - AVS Forum | Home Theater Discussions And Reviews
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post #1 of 3 Old 11-13-2019, 06:59 AM - Thread Starter
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RCA Voltage and type questions

ok, I have some quesitons about RCA outputs on blu-ray players, etc. it may seem like dumb questions, but well, I don't know so I'm going to ask anyway.

I think voltage out in the pro-audio world from mixers etc, into amps is 1.24 volts or so?
I think voltage out in the consumer audio world is around 775 milivolts?

First, are the above statements correct?

Is the output of the consumer audio rca jacks AC or DC?

And how does it get the freequancies to go across? Is it like just the wavelength of the signal? For example, the wall plug in my home is 120 volts 60hz. So lets pretend it was 775 milivolts instead of 120 volts, if I ran that current into an rca jack, would it then play a 60hz note (I'm not going to do this, I am trying to wrap my head around how all this works).

Sorry if this seems silly or dumb, but I'm curious.
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post #2 of 3 Old 11-14-2019, 08:03 PM
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A mixer can put out levels as high as 26 dBu, which translates to 15 Vrms.

For the main outputs of home audio pre-amplifiers, there is no standard. We’ve seen people report output as low as 1.5 Vrms to as high as 8-9 Vrms.

In either case, the output is A/C.


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And how does it get the freequancies to go across? Is it like just the wavelength of the signal? For example, the wall plug in my home is 120 volts 60hz. So lets pretend it was 775 milivolts instead of 120 volts, if I ran that current into an rca jack, would it then play a 60hz note
You’re confusing audio frequencies with electrical power. With A/C (alternating current) power, the signal constantly swings back and forth between positive and negative. In this case, 60 Hz means the signal swings 60 times in a second. (Europe uses 50 Hz power.)

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post #3 of 3 Old 12-01-2019, 03:39 PM
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Can't help you, your thinking of volt vs amp vs hz relationship is messed up.

The way people can help you is, why do you want to know this, that is, what's your short term objective? knowing this then we can give you more precise, targeted answers.

If u just wanna know why sky is blue, then schooling is required.
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