Gain - diyAudio
Go Back   Home > Forums > Amplifiers > Tubes / Valves

Tubes / Valves All about our sweet vacuum tubes :) Threads about Musical Instrument Amps of all kinds should be in the Instruments & Amps forum

Please consider donating to help us continue to serve you.

Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving
Reply
 
Thread Tools Search this Thread
Old 10th August 2007, 10:24 PM   #1
diyAudio Member
 
Join Date: Sep 2006
Default 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
  Reply With Quote
Old 10th August 2007, 10:26 PM   #2
EC8010 is offline EC8010  United Kingdom
diyAudio Moderator Emeritus
 
EC8010's Avatar
 
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...
  Reply With Quote
Old 10th August 2007, 11:32 PM   #3
rdf is offline rdf  Canada
diyAudio Member
 
rdf's Avatar
 
Join Date: Jun 2004
Location: big smoke
Quote:
Originally posted by EC8010
How long is a piece of string?
6 dB.
__________________
Ears aren't microphones.
  Reply With Quote
Old 11th August 2007, 12:40 AM   #4
gianis is offline gianis  Greece
diyAudio Member
 
Join Date: Jan 2004
Location: athens
Default 12 db valtage ratio

  Reply With Quote
Old 11th August 2007, 01:11 AM   #5
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.
  Reply With Quote
Old 11th August 2007, 05:04 AM   #6
diyAudio Member
 
aletheian's Avatar
 
Join Date: Apr 2004
Location: Philly
Quote:
Originally posted by rdf


6 dB.
Only if it is red string.
__________________
Heghlu'meH QaQ jajvam!
  Reply With Quote
Old 11th August 2007, 05:21 AM   #7
rdf is offline rdf  Canada
diyAudio Member
 
rdf's Avatar
 
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.
  Reply With Quote

Reply


Hide this!Advertise here!
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Gain Blockwith Variable Loop Gain Bonsai Solid State 17 11th July 2008 03:40 PM
How much gain should I have? komen Chip Amps 2 26th March 2006 02:32 PM
Heretical Unity Gain line stage PLUS a little gain ? yagas Tubes / Valves 7 24th January 2006 02:30 PM
Unity Gain Operation (or low gain) Tomo Chip Amps 12 22nd January 2004 02:47 AM
Q on amp gain Andrey Solid State 1 18th June 2002 10:48 PM


New To Site? Need Help?

All times are GMT. The time now is 05:43 PM.


vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2014 DragonByte Technologies Ltd.
Copyright 1999-2014 diyAudio

Content Relevant URLs by vBSEO 3.3.2