Aikido Gainclone - diyAudio
Go Back   Home > Forums > Amplifiers > Chip Amps

Chip Amps Amplifiers based on integrated circuits

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 May 2008, 08:11 AM   #1
diyAudio Member
 
Franz Gysi's Avatar
 
Join Date: Oct 2007
Default Aikido Gainclone

Hi Gainclone Friends

Did you have a look at John Broskies tube cad blog recently? The may 19 blog?

Click the image to open in full size.

An interesting circuit, isn't it?

The only thing I would like to avoid: the fat output cap...

And you'll find even more: some balanced hybrid gainclones, amazing!

www.tubecad.com

Franz
  Reply With Quote
Old 21st May 2008, 08:33 AM   #2
Nordic is offline Nordic  South Africa
diyAudio Member
 
Nordic's Avatar
 
Join Date: Sep 2005
Hey Franz, nice to see you posting again...

Yep, looks interesting, I guess there is no getting by that DC operating point other than to complicate the circuit.

I think, if anything, the 2200uf output cap is too low value for lowish impendance speakers... fine for earphones...I would shoot for 10kuF
  Reply With Quote
Old 21st May 2008, 09:26 AM   #3
AndrewT is offline AndrewT  Scotland
diyAudio Member
 
Join Date: Jul 2004
Location: Scottish Borders
Quote:
Originally posted by Nordic
I think, if anything, the 2200uf output cap is too low value for lowish impendance speakers... fine for earphones...I would shoot for 10kuF
agreed,
far too low for 8ohm speakers.
__________________
regards Andrew T.
  Reply With Quote
Old 27th July 2008, 02:35 PM   #4
lineup is offline lineup  Sweden
diyAudio Member
 
lineup's Avatar
 
Join Date: Dec 2005
Location: the north
Default Re: Aikido Gainclone

Quote:
Originally posted by Franz Gysi
Hi Gainclone Friends
Did you have a look at John Broskies tube cad blog recently? The may 19 blog?
Click the image to open in full size.
An interesting circuit, isn't it?
The only thing I would like to avoid: the fat output cap...
And you'll find even more: some balanced hybrid gainclones, amazing!
www.tubecad.com Franz

Yeah.
Aikido Tube + Gainclone Chip

Tubes to fead LM3875 has been tried before.
Several times.

for example at this website:
Quote:
http://www.customanalogue.com/diytub...lone/index.htm
Tube Gainclone for DIY Buffs
This section of the website is dedicated to the original Tube Gainclone for DIY
__________________
lineup
  Reply With Quote
Old 29th July 2008, 02:36 PM   #5
Nordic is offline Nordic  South Africa
diyAudio Member
 
Nordic's Avatar
 
Join Date: Sep 2005
Franz actualy headed a valve buffer thread here before... It was my first valve project, and I stay forever in his debt for the encouragement and patience while I was still realy green...

Projects for next hollidays (the world smallest VBITNGC??)
  Reply With Quote
Old 29th July 2008, 04:20 PM   #6
diyAudio Member
 
Franz Gysi's Avatar
 
Join Date: Oct 2007
Hello to South Africa!

No, I was not as patient as you write, but I tried to convince you to use a tube as buffer

The pictures in the old thread are gone. It was this little stereo amp (side by side with a 6C33C tube):

Click the image to open in full size.

Together with the PSU:

Click the image to open in full size.

Regards
Franz
  Reply With Quote
Old 29th July 2008, 05:30 PM   #7
Nordic is offline Nordic  South Africa
diyAudio Member
 
Nordic's Avatar
 
Join Date: Sep 2005
Good times old Franzy

To the uninnitiated, there are 2 LM3875 chips inside that little box...
  Reply With Quote
Old 29th July 2008, 06:18 PM   #8
Nuuk is offline Nuuk  United Kingdom
diyAudio Member
 
Nuuk's Avatar
 
Join Date: Feb 2003
Location: Somerset, SW England
Ah! The nostalgia. It would be good to see some new and original GC case designs again!
__________________
The truth need not be veiled, for it veils itself from the eyes of the ignorant.
  Reply With Quote
Old 29th July 2008, 07:08 PM   #9
lineup is offline lineup  Sweden
diyAudio Member
 
lineup's Avatar
 
Join Date: Dec 2005
Location: the north
Quote:
Originally posted by Nordic
Good times old Franzy
To the uninnitiated, there are 2 LM3875 chips inside that little box...
Nice amplifier set, Franz.
Bet it sounds just wonderful .. with those E88CC
  Reply With Quote
Old 30th July 2008, 03:41 AM   #10
fredex is offline fredex  New Zealand
diyAudio Member
 
Join Date: Jul 2005
Location: New Zealand
Hi Franz Gysi, I like the look of your amp. Nicely proportioned with the honesty of the raw materials.
Cheers
  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
My Aikido!! piero7 Tubes / Valves 9 31st August 2009 10:56 AM
Aikido hum kacernator Tubes / Valves 29 29th December 2008 12:45 AM
All FET Aikido kacernator Tubes / Valves 26 24th September 2008 11:09 PM
WTB: Aikido PSU habsrock93 Swap Meet 23 13th July 2007 11:23 PM
Aikido PSU help cbutterworth Tubes / Valves 48 13th October 2006 07:54 PM


New To Site? Need Help?

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