Schematic for Audiolab 8000a - Page 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 2nd July 2005, 04:35 PM   #21
mikeks is offline mikeks  United Kingdom
Account Disabled
 
Join Date: Jun 2004
Location: Animal farm
Hi DX...long time no see old chap...
  Reply With Quote
Old 9th November 2005, 10:31 AM   #22
mikeks is offline mikeks  United Kingdom
Account Disabled
 
Join Date: Jun 2004
Location: Animal farm
Default Re: Poor Mikeks, my old friend already read all electronics books

Quote:
Originally posted by destroyer X
........worried about your future destiny..
Carlos

me too...old chap...me too....
  Reply With Quote
Old 23rd December 2005, 10:33 PM   #23
diyAudio Member
 
Join Date: May 2005
Location: Bristol, UK
Hi mikeks,

thanks for posting those PDFs, makes for interesting reading.

I'm wondering if anyone can explain this:

On page 2 of the first PDF, Derek Scotland states that TAG, quite rightly for a large production item, aims for repeatability of amplifier performance without the use of trimming components or the requirement for matching of components. Then, on page 7 - 8, he talks about precise compensation of semiconductor poles. Surely these two aims fly in the face of one another? The poles introduced by the various transistors in the circuit will surely not always be at the same frequency (from one amplifier sample to the next)? They are dependant upon device parasitic components, which vary from sample to sample, and some of which vary with signal level. It is quite possible that the forward poles of the amplifier are not even stationary, but move around slightly depending on the output signal.
  Reply With Quote
Old 24th December 2005, 04:42 AM   #24
mikeks is offline mikeks  United Kingdom
Account Disabled
 
Join Date: Jun 2004
Location: Animal farm
Quote:
Originally posted by HarryDymond
I'm wondering if anyone can explain this.........
It mostly marketing blab really....

....up to the reader to sort the wheat from the chaff.
  Reply With Quote
Old 13th January 2006, 11:02 PM   #25
dw887 is offline dw887  United Kingdom
diyAudio Member
 
Join Date: Apr 2005
Location: Consett
Hi

I have aquired another 8000a with a fault on the left output. It is the original mk1 with the 180 degree 5 pin din out/ins. The output transistors are short circuit on the left channel causing the 2a fuse to blow. I have removed these transistors which are BD912 and BD911's, and will problably end up blanket changing all of the other transistors associated with the left channel. Does anyone have any experience of repairing this version and if so could you share your knowledge with me. Also does anyone have a circuit diagram of this output configuration.

Thanks

Dave
  Reply With Quote
Old 14th January 2006, 01:14 AM   #26
dw887 is offline dw887  United Kingdom
diyAudio Member
 
Join Date: Apr 2005
Location: Consett
Sorry friends

The circuit diagram within the thread is near enough perfect. I was not paying enough attention.

I now have quite a selection of short circuit or high resistence transistors and a coupe of discoloured resistors for my collection.

Any help would be appreciated.

Thanks

Dave
  Reply With Quote
Old 2nd October 2006, 01:58 PM   #27
diyAudio Member
 
Join Date: Oct 2006
Default schematics diagram Audiolab 8000A

Hi, i 'm looking for the complete Schematics Diagram for
the Audiolab 8000A and if is it possible the Service Manual of it!!!
My ampli serial number is s/n:8942197.
Thanks of all!!!
Simon
  Reply With Quote
Old 9th February 2010, 04:20 PM   #28
diyAudio Member
 
Join Date: Feb 2010
Thanks Steven.
  Reply With Quote
Old 9th February 2010, 04:25 PM   #29
diyAudio Member
 
Join Date: Feb 2010
audiolab 8000a circuit
  Reply With Quote
Old 10th February 2010, 05:43 AM   #30
big jim is offline big jim  England
diyAudio Member
 
Join Date: Feb 2006
Location: london
Here is the power amp and protection circuits



regards jim
Attached Images
File Type: jpg 8000a.jpg (643.6 KB, 381 views)
File Type: jpg protection 8000a.jpg (516.7 KB, 360 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
Audiolab 8000a dantzig65 Solid State 9 6th June 2011 02:48 PM
Help! Audiolab 8000A Matthewong Solid State 9 15th October 2007 06:09 PM
audiolab 8000a davephot Solid State 35 26th November 2006 10:25 PM
Audiolab 8000A - old version dudu Solid State 1 29th April 2006 06:34 AM


New To Site? Need Help?

All times are GMT. The time now is 04:03 AM.


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