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 1st March 2004, 08:02 PM   #1
diyAudio Member
 
Join Date: Feb 2004
Location: Slovenia
Default Gigant 2000

Hi there,

I would like to know if someone has built this amp with two channels and tested and how it works in bridge?

Regards,

Audio Tech
__________________
Power To The People
  Reply With Quote
Old 1st March 2004, 10:54 PM   #2
MGR is offline MGR
diyAudio Member
 
Join Date: Oct 2002
Location: Philippines
Do you have a copy of the schematics?
  Reply With Quote
Old 2nd March 2004, 04:07 PM   #3
diyAudio Member
 
Join Date: Feb 2004
Location: Slovenia
Default MGR

Hi MGR,

Here is a link to schemstics and description. It's in German language and it was taken from Elektor magazine. I hope you will understand the common things.

http://www.corradodriver.de/HTML/Ele...00/Gigant1.htm

Regards,

Audio Tech
__________________
Power To The People
  Reply With Quote
Old 2nd March 2004, 06:41 PM   #4
diyAudio Member
 
Join Date: May 2002
Location: Plano , TX
Send a message via AIM to jewilson
Ah, it to bad I don't read German, it's Greek to me. The amps look very interesting.
__________________
Jim W.
  Reply With Quote
Old 2nd March 2004, 07:34 PM   #5
diyAudio Member
 
Join Date: Dec 2003
Location: Munich
Hi Audio!
I did not build this amp.
But from schematic it looks like a good and simple
straight forward design.
I have some doubts regarding the short circuit protection,
unfortunately I cannot see to where the optocoupler is connected.
If it is only used to turn off the relay, then I would expect a certain
risk of damage.
Even worse if you bridge two chanels and a short circuit between both outputs happen while a large input signal is given....

But except this, I would say it is worth trying.

Good luck
Markus
  Reply With Quote
Old 2nd March 2004, 08:14 PM   #6
Netlist is offline Netlist  Belgium
diyAudio Moderator Emeritus
 
Netlist's Avatar
 
Join Date: Jan 2003
I build it a few years ago. It worked from the first time. I never bridged it so I can't comment on that.
It's quite a serious project, I have all the info on paper, unfortunately in Dutch.
The protection circuit is very accurate. Sometimes a bit too willing but this can be adjusted.
It works on output DC protection, overcurrent protection, overvoltage protection, input clipping detection, temperature sensing and inrush current limiting.

/Hugo
  Reply With Quote
Old 2nd March 2004, 08:14 PM   #7
diyAudio Member
 
Join Date: Feb 2004
Location: Slovenia
Hi ChocoHolic,

All conections for security are conected to security curcuit. This curcuit than acts for protecting the amp by switching relays etc.
I found that page surfing the internet. I thought if someone will ask to take a look on the shematics I'll just link him to that page.

Regards,

Audio Tech
__________________
Power To The People
  Reply With Quote
Old 2nd March 2004, 08:24 PM   #8
diyAudio Member
 
Join Date: Feb 2004
Location: Slovenia
Default Netlist

Hi Netlist,

Did you put him in a 19" rack? How did you arrange the cooling?
It will be great if you have some photos of the amp to share.

Audio Tech

Here is my E-mail:audiotech@volja.net
__________________
Power To The People
  Reply With Quote
Old 2nd March 2004, 08:54 PM   #9
diyAudio Member
 
Join Date: Dec 2003
Location: Munich
Hi Audio!
THX for this info.
Netlist states that the protection works very well
and he has build it! So his information might be more
reliable.
My thoughts were the following:
The output stage does not have a dedicated
current limiter. Currents may be limited by emitter
resistors, current amplification of BJTs and rail properties only.
For sound this is typically great, because a additional
current limiter will always influence the signal more
or less. The disadvantage is that without such a current
limiting circuit the possible current are very high.
I typically experienced that the transistors failed before
the relays could turn off....
But I did neither calculate in detail which currents can happen
in this specific gigant 2000, nor checked the SOA of the BJTs.
And there may be there is another current limiting
effect which I do not notice right now.

Cheers
Markus
  Reply With Quote
Old 2nd March 2004, 09:21 PM   #10
Netlist is offline Netlist  Belgium
diyAudio Moderator Emeritus
 
Netlist's Avatar
 
Join Date: Jan 2003
Default Re: Netlist

Quote:
Originally posted by Audio Tech
Did you put him in a 19" rack? How did you arrange the cooling?
It will be great if you have some photos of the amp to share.
There is at least one picture on this forum but I can't find it for now.
It's not build into a case.
I'll see what I can find tomorrow or take some other pictures.

/Hugo
  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
av 2000 black Solid State 0 12th September 2008 01:54 AM
Ortofon Mc-2000 Rolexmonger Swap Meet 0 21st March 2007 08:54 AM
Zanden 2000..... ash_dac Digital Source 6 11th August 2006 03:02 PM
FS: Titan (Gigant 2000) amplifier Netlist Swap Meet 0 1st August 2006 04:54 PM
CircuitMaker 2000 Asen Everything Else 7 1st March 2003 05:24 AM


New To Site? Need Help?

All times are GMT. The time now is 07:47 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