TSSA - The Simplest Symmetrical Amplifier - Page 91 - 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 10th August 2012, 08:35 AM   #901
sonnya is offline sonnya  Denmark
diyAudio Member
 
sonnya's Avatar
 
Join Date: Oct 2001
Location: Denmark
Quote:
Originally Posted by mikelm View Post
Well,

I'm not that worried about H2, 3 etc

It's extreme low H6 - H20 & other noise of all types that gives a very clean, transparent & detailed sound.

I look forward to see when you present them

mike
Hi Mike.

Here they are. This is real life measurements
Attached Files
File Type: pdf testtone-1k-1W no load.pdf (38.8 KB, 88 views)
File Type: pdf testtone-1k-1W 8r.pdf (38.8 KB, 70 views)
File Type: pdf testtone-10k-1W 8r.pdf (38.9 KB, 58 views)
File Type: pdf testtone-1k-10W 8r.pdf (39.0 KB, 98 views)
File Type: pdf testtone-10W no load.pdf (31.8 KB, 60 views)
  Reply With Quote
Old 11th August 2012, 09:29 AM   #902
mikelm is offline mikelm  England
diyAudio Member
 
Join Date: May 2003
Location: England
Send a message via Yahoo to mikelm
mmmm - those 10W figures are higher than I expected - almost in valve amp land.

But valve amps can sound very good - do you have any further comments to make to convey to us the sound of this amp. For instance compared to your other best designs.

Is it good for a simple amp or good by any standards ?

thx

mike
  Reply With Quote
Old 11th August 2012, 03:50 PM   #903
sonnya is offline sonnya  Denmark
diyAudio Member
 
sonnya's Avatar
 
Join Date: Oct 2001
Location: Denmark
I stick to my impression in post 836. I Will comment more later.
  Reply With Quote
Old 11th August 2012, 04:52 PM   #904
sonnya is offline sonnya  Denmark
diyAudio Member
 
sonnya's Avatar
 
Join Date: Oct 2001
Location: Denmark
But maybe i should loan you an set you could return or buy when you have tested the Sound ???? Then we All have a second opinion...
  Reply With Quote
Old 11th August 2012, 05:07 PM   #905
MiiB is online now MiiB  Denmark
diyAudio Member
 
Join Date: May 2005
Location: Denmark
The amp sounds very very good.. clean crisp and very very detailed in a true musical way. Not much can compete with this. I have built now 3 different versions of the SSA. this one is the clearly the best. It may not have the best specs, but then what is specs...?? sine-wave deformation..??

The pure simplicity of this circuit really makes it shine, less grain, less sand... I LIKE..!!
  Reply With Quote
Old 11th August 2012, 05:27 PM   #906
mikelm is offline mikelm  England
diyAudio Member
 
Join Date: May 2003
Location: England
Send a message via Yahoo to mikelm
thx Sonny,

Do you think it would work ok with + / - 25V supplies - biased to 1 amp / channel ?

That's how my DC fetzilla are powered - so good comparison - could use my choke regulated PSU's.

If I prefer my Fetzillas then I'll return the favour - if you like - once I make up some more - but I would strongly recommend using choke regulated supplies.

At present my Fetzillas are the most transparent, detailed & natural amps I have ever heard - and it's hard to imagine something better - but I would be happy to be surprised.

mike
  Reply With Quote
Old 11th August 2012, 05:30 PM   #907
mikelm is offline mikelm  England
diyAudio Member
 
Join Date: May 2003
Location: England
Send a message via Yahoo to mikelm
Quote:
Originally Posted by MiiB View Post
I have built now 3 different versions of the SSA. this one is the clearly the best.
Hi Michael

An amp with an electrolytic in the FB sounding better than DC linked ? ! ? !

That goes against my religious beliefs
  Reply With Quote
Old 11th August 2012, 05:46 PM   #908
MiiB is online now MiiB  Denmark
diyAudio Member
 
Join Date: May 2005
Location: Denmark
Can't tell you why, but the horse may lie somewhere in the execution or.... this number three version of the SSA I have is currently the best of my SSA's, but still it lacks a little compared to Sonnys, In all respects it's actually better, more power, deeper base, better grip same level of detail but sonny's amp plays the music in a better way. It simply makes more sense. Now I'm not a measurement guy or a guy with an utter love for my own creations, but I do have access to some very very good equipment, superb cables and also a good collection of reference equipment. Sonny brought his amp, and what we have got whipped. My third incarnation of the SSA is closer and in some respects better, quite sure it measures better, but it lacks some of this special magic that Sonny's amp has.... could be the Drain output, that holds the magic..?? Still some work to do for me...
  Reply With Quote
Old 11th August 2012, 05:55 PM   #909
diyAudio Member
 
Lazy Cat's Avatar
 
Join Date: Sep 2007
Sony and Michael I clearly believe your's sound impressions, since I know what kind of amps and systems you both have experienced so far. If you both says it is OK, I know it is so.

Me also know what SSA/TSSA amps are capable of and that is the major reason why still digging further on into this topology. As a result, as you all know up to now, CSA was started. Before opening CSA thread, here's front-end, populated with resistors and semiconductors just for a taste.

Andrej
Attached Images
File Type: jpg CSA PCB1.jpg (601.5 KB, 408 views)
File Type: jpg CSA PCB2.jpg (604.3 KB, 399 views)
  Reply With Quote
Old 11th August 2012, 06:14 PM   #910
diyAudio Member
 
Joachim Gerhard's Avatar
 
Join Date: Mar 2009
I think that 0.1% low order distortion does not sound distorted for the ear. Of cause i would like to see better numbers but maybe conventional high feedback amps have other problems like energy storage ( settling time ) or there is interface distortion when the speakers are connected. I still listen to my TSSA version that is even simpler then sonnys and nobody is complaining. I use high sensitivity speakers though and under 80Hz my subs are active so the TSSA does not have to work that hard in the bass.
There has being discussion in other threads why some amps with high static distortion like tubes sound better to some people. Maybe a little bit of harmonic distortion is even good to make the music alive. There is a certain loos of harmonics on all recordings, may it be the truncated response of microphones or may it be strict bandwidth limiting in CDs. I know that arguing that way is waking in muddy waters but what the heck !
When it sounds good it is good.

Last edited by Joachim Gerhard; 11th August 2012 at 06:36 PM.
  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
simplest amplifier possible with BJT's? rmgvs Solid State 123 10th July 2008 03:05 AM
Symmetrical Phono Amplifier seroxatmad Solid State 3 6th August 2007 04:00 PM
Simplest class B Amplifier PicancoNet Solid State 42 8th June 2005 02:55 PM
Symmetrical amplifier conundrum Kilentra Solid State 22 31st January 2003 05:06 AM
Symmetrical 400W amplifier Diogo Solid State 30 28th October 2002 11:00 AM


New To Site? Need Help?

All times are GMT. The time now is 02:24 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