How to reduce the gain of the symasym 5_3? - diyAudio
Go Back   Home > Forums > Amplifiers > Solid State

Solid State Talk all about solid state amplification.

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 20th September 2011, 05:13 PM   #1
diyAudio Member
 
formula 22's Avatar
 
Join Date: Sep 2011
Location: El Triunfo
Default How to reduce the gain of the symasym 5_3?

Hello all!
In order to reduce the gain of 27dB [Av = (R29/R30) +1] - see schematic, and the quality amplifiers that i should lose nothing?
Now gain is: Av=(22 / 0.499) +1=45.1, or Av=33.1dB!
Attention: If the gain is too high because symasym is driven from preamp, R30 can be increased from 499ohms to 1k, but in this case R16/19 (22 or 33 ohms, not on schematic, REs to Q1/2) are required to keep feedback at same level and...
This somehow does not understand?
thanks
Attached Images
File Type: gif Shema-1.GIF (34.6 KB, 91 views)
  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
How to reduce gain in mu-follower? karsten21 Tubes / Valves 9 30th June 2011 11:31 PM
symasym 5_3 boards traw Swap Meet 6 11th May 2007 10:41 AM
How to reduce gain of this Tube Preamplifier ? ANALOG GUY Tubes / Valves 5 22nd September 2006 04:37 AM
Reduce Input Gain Question? mgreene Chip Amps 9 27th April 2004 12:32 PM


New To Site? Need Help?

All times are GMT. The time now is 09:59 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