Gain

ak_47_boy · 10th August 2007, 09:24 PM

What is the average gain of a phono amp?
What is the average gain of a preamp?
What is the average gain of a linestage?
What is the average gain of a power amp?

I am guessing linestage and poweramps have 0db?

Thanks

EC8010 · 10th August 2007, 09:26 PM

How long is a piece of string?

rdf · 10th August 2007, 10:32 PM

Quote:

Originally posted by EC8010
How long is a piece of string?

6 dB.

gianis · 10th August 2007, 11:40 PM

ak_47_boy · 11th August 2007, 12:11 AM

I am guessing this means the gain of a power amp is dependent on its power handling. This makes sense to me now, i don't think i thought about it hard enough.

But that can't be true for a preamp. Can it? Their has to be some guideline to follow or else the first notch on the attenuator could be full power.

aletheian · 11th August 2007, 04:04 AM

Quote:

Originally posted by rdf

6 dB.

Only if it is red string.

rdf · 11th August 2007, 04:21 AM

A power amp's gain depends on rated output. Typically designers aim for 1.5-2 volts for full power output. A 1 watt amp's gain will be much lower than a 200 watter's. For pre-amps, consider the output level of common sources, or those you'll use, and the rated voltage for full output of your amp. You'll want some extra gain to make up for low level recordings but I can't think of any situations personally requiring more than 6-10 dB.

10th August 2007, 09:24 PM	#1
ak_47_boy diyAudio Member Join Date: Sep 2006	Gain What is the average gain of a phono amp? What is the average gain of a preamp? What is the average gain of a linestage? What is the average gain of a power amp? I am guessing linestage and poweramps have 0db? Thanks

10th August 2007, 09:26 PM	#2
EC8010 diyAudio Moderator Join Date: Jan 2003 Location: Near London. UK	How long is a piece of string? __________________ The loudspeaker: The only commercial Hi-Fi item where a disproportionate part of the budget isn't spent on the box. And the one where it would make a difference...

10th August 2007, 11:40 PM	#4
gianis diyAudio Member Join Date: Jan 2004 Location: athens	12 db valtage ratio

11th August 2007, 04:21 AM	#7
rdf diyAudio Member Join Date: Jun 2004 Location: big smoke	A power amp's gain depends on rated output. Typically designers aim for 1.5-2 volts for full power output. A 1 watt amp's gain will be much lower than a 200 watter's. For pre-amps, consider the output level of common sources, or those you'll use, and the rated voltage for full output of your amp. You'll want some extra gain to make up for low level recordings but I can't think of any situations personally requiring more than 6-10 dB. __________________ Ears aren't microphones.

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11th August 2007, 12:11 AM	#5
ak_47_boy diyAudio Member Join Date: Sep 2006	I am guessing this means the gain of a power amp is dependent on its power handling. This makes sense to me now, i don't think i thought about it hard enough. But that can't be true for a preamp. Can it? Their has to be some guideline to follow or else the first notch on the attenuator could be full power.

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