Go Back   Home > Forums > >
Home Forums Rules Articles diyAudio Store Blogs Gallery Wiki Register Donations FAQ Calendar Search Today's Posts Mark Forums Read

Solid State Talk all about solid state amplification.

Your opinions are sought on Audio Power Amplifier Design: 6th Edition. Douglas Self
Your opinions are sought on Audio Power Amplifier Design: 6th Edition. Douglas Self
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 21st July 2014, 03:56 PM   #1
DouglasSelf is offline DouglasSelf  United Kingdom
diyAudio Member
 
DouglasSelf's Avatar
 
Join Date: Mar 2007
Location: London
Default Your opinions are sought on Audio Power Amplifier Design: 6th Edition. Douglas Self

The Sixth Edition has been out there for about a year now, and i would be very glad to get some feedback on what people think of it. I imagine that everyone who wants it has bought it by now- this not an advert. This is also NOT a trailer for a 7th edition, which is not even planned.

I would specifically be interested in reactions to:

Chapter 7, the detailed analysis of VAS distortion, carried out in collaboration with Samuel Groner.

Chapter 8, which seems to demonstrate that a push-pull or balanced VAS is always inferior to the single-ended VAS of the Blameless power amplifier.

Chapter 12, which shows how very effective output-inclusive compensation is at reducing distortion in a real amplifier, getting it below 0.0001% up to at least 10 kHz at 50W/8R.

Chapter 16,which shows that the real efficiency of a Class-A amplifier with a music signal is no better than 1%, which brings into question whether they should ever be built at all.


I would of course also like to know what you think is missing, but, as I say, there is no prospect of a new edition in the foreseeable future.
__________________
Douglas Self
  Reply With Quote
Old 21st July 2014, 04:03 PM   #2
RNMarsh is online now RNMarsh  United States
diyAudio Member
 
RNMarsh's Avatar
 
Join Date: May 2012
Location: 2457 Cascade Trail; Cool, CA. 95614
Hi,

I haven't bought the newest edition yet. But, now I will just because of your questions.

It seems that efficiency is always measured at full load to make comparison. But at less than full load, the efficiency differences are are not so great and are more alike. Pls comment.

Thank you for producing an excellent book. -R.Marsh
  Reply With Quote
Old 21st July 2014, 06:57 PM   #3
sparko311 is offline sparko311  United States
diyAudio Member
 
Join Date: Apr 2012
...THE.... Douglass Self.

I'm star struck.

Ive been a long time student, have the 5th edition. Your works have been inspiration for many of my designs. Thank you!

[ e- handshake ]
  Reply With Quote
Old 21st July 2014, 09:03 PM   #4
jkuetemann is offline jkuetemann  Canada
diyAudio Member
 
jkuetemann's Avatar
 
Join Date: Dec 2010
Location: Paris, Ontario
I suppose I should retire my haggard old 'First Edition' and get the latest myself. Amazon / Chapters, here I come!
__________________
---Jason Kuetemann---
Power is only granted to those willing to lower themselves enough to pick it up.
  Reply With Quote
Old 21st July 2014, 09:33 PM   #5
bimo is offline bimo  Indonesia
diyAudio Member
 
bimo's Avatar
 
Join Date: Sep 2010
Location: Depok, West of Java
Not sufficient session/chapter about "current feedback amplifier", which is popular here, like VSSA or SLEWMASTER - CFA vs. VFA "Rumble"
  Reply With Quote
Old 21st July 2014, 11:30 PM   #6
Belaji is offline Belaji  United States
diyAudio Member
 
Join Date: Sep 2008
I would suggest that it is not helpful to speak about what is omitted in the already published book.

Bela

Last edited by Belaji; 21st July 2014 at 11:34 PM.
  Reply With Quote
Old 22nd July 2014, 05:44 AM   #7
gmphadte is offline gmphadte  India
diyAudio Member
 
Join Date: Jul 2003
Location: Dona paula, Goa
Zeners or LEDs when used for the constant current circuits take away lower level details of the sound. Clean shunt regulator works better.

Gajanan Phadte
  Reply With Quote
Old 22nd July 2014, 10:27 AM   #8
Vostro is offline Vostro  South Africa
diyAudio Member
 
Vostro's Avatar
 
Join Date: May 2012
Location: Other side of the fence
Do you have a shunt regulator that you would advice
  Reply With Quote
Old 22nd July 2014, 10:35 AM   #9
AndrewT is offline AndrewT  Scotland
R.I.P.
 
Join Date: Jul 2004
Location: Scottish Borders
Quote:
Originally Posted by bimo View Post
Not sufficient session/chapter about "current feedback amplifier", which is popular here, like VSSA or SLEWMASTER - CFA vs. VFA "Rumble"
If I have read D.Self correctly, he does not believe that CFA holds any promise for improved performance.
__________________
regards Andrew T.
  Reply With Quote
Old 22nd July 2014, 12:11 PM   #10
still4given is offline still4given  United States
diyAudio Member
 
still4given's Avatar
 
Join Date: Oct 2004
Location: Victorville, CA
Your opinions are sought on Audio Power Amplifier Design: 6th Edition. Douglas Self
He did ask to hear what folks think might be missing. Bimo's statement was not out of line. Has Dr Self built the CFA?
  Reply With Quote

Reply


Your opinions are sought on Audio Power Amplifier Design: 6th Edition. Douglas SelfHide 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

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
book-audio power amplifier by Douglas Self mikee12345 Solid State 12 6th January 2018 09:57 AM
The design of active crossovers- Douglas Self wants your opinions DouglasSelf Analog Line Level 293 20th May 2016 11:33 PM
Audio Power Amplifier Design book- Douglas Self wants your opinions DouglasSelf Solid State 2383 27th December 2014 12:22 PM
Comments on Audio Power Amplifier Design Handbook by Douglas Self Samuel Groner Solid State 68 16th March 2013 10:26 PM


New To Site? Need Help?

All times are GMT. The time now is 01:21 PM.


Search Engine Optimisation provided by DragonByte SEO (Pro) - vBulletin Mods & Addons Copyright © 2018 DragonByte Technologies Ltd.
Resources saved on this page: MySQL 14.29%
vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2018 DragonByte Technologies Ltd.
Copyright ©1999-2018 diyAudio
Wiki