VSC Amp, Looking for Sonic Improvements - 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 31st December 2007, 11:57 PM   #1
Don S is offline Don S  United States
diyAudio Member
 
Join Date: Nov 2006
Default VSC Amp, Looking for Sonic Improvements

I call this amp the "VSC" for Very Simple Circuit!

After thinking about this for a long time, I have decided to post this. I know it will open up many cans of worms. That is not my intention.

This is not in a pursuit of POOGE solutions. I am looking for valid, explainable improvements to the circuit operation to increase its listening pleasure. I will give a simple example of what I am talking about. The original driver emitter resistor was 100R, after talking to many forum members it was suggested that I change this for a much lower value. The difference was well worth the extra heat on the drivers. I can say for sure that every area of the ampís performance improved. This was due to the drivers operating in class A most of the time, and also this is where the drivers are at their most linear operating point. These are things that are not thoroughly discussed in electronics theory.

I am looking to improve the sonic performance without changing the basic simplicity of the circuit. I would like assistance tweaking the component values, FB compensation, semi-conductors, and connection layout in the pursuit of increased audible performance. By that I mean warmth, depth, space and air.

As it is now I have an amp that is detailed, dynamic, and very controlled. These are all very good qualities in an amp. However it misses the mark in the areas in the paragraph above that prevent it from being a true music loverís amp.

I believe that the stages of the amp that would benefit most from circuit changes are the LTP, and the VAS. Everything beyond them is a classic EF, with devices and component values that are close to many outstanding amplifiers.

Below is the circuit. I am running +/-73V rails at idle.

Please help and enlighten me!

P.S. Happy New Years to All

Don S
Attached Images
File Type: jpg vsc amp.jpg (95.5 KB, 83 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
6c45pi : sonic utopia or sonic hell? Kashmire Tubes / Valves 30 25th November 2012 02:00 PM
amp improvements felixx Solid State 0 6th January 2007 08:56 AM
Improvements lplateaudio Pass Labs 3 19th June 2006 05:31 PM
Sonic Impact improvements. Great! Pano Class D 65 23rd April 2005 05:52 AM
Pre PS Improvements? Bryan Tubes / Valves 24 20th April 2004 02:52 PM


New To Site? Need Help?

All times are GMT. The time now is 12:02 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