gainclone vs. symasym amp - 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 12th December 2006, 02:27 PM   #1
student is offline student  Austria
diyAudio Member
 
Join Date: Dec 2006
Default gainclone vs. symasym amp

hi

what would you think about a comparison between the gainclone and the so-called "symasym" amp ?
which one would sound better and which one would cost less in production ?

http://www.stereo.holgerbarske.com/
here's a link to the symasym amp. i saw it first in the new "kang+ton" magazine. the also said that it would cost around 100 each monoblock and it would do a great sound @ 60-100 watts (8/4 ohms).

someone knows this amp ?
________

i also have a question @ the gainclone amp:

http://dogbreath.de/Chipamps/GainCar...nCardCopy.html
this is a website of a german guy who built a "free air connected" version of the gainclone. (i dont know the correct word for this but look at the photos and u'll understand what i mean)
does someone in this forum ever made such a creation ? does it sound good ?

and maybe can someone post a part-list of the whole parts u need for the gainclone ? (maybe inkl. snubber and power supply)
_______

thx everyone and sorry for my crap english
  Reply With Quote
Old 12th December 2006, 03:21 PM   #2
diyAudio Moderator
 
pinkmouse's Avatar
 
Join Date: Apr 2002
Location: Chatham, England
I will keep building GCs because they are cheap and sound very good. However, my Symasym is better.
__________________
Rick: Oh Cliff / Sometimes it must be difficult not to feel as if / You really are a cliff / when fascists keep trying to push you over it! / Are they the lemmings / Or are you, Cliff? / Or are you Cliff?
  Reply With Quote
Old 12th December 2006, 03:34 PM   #3
Dxvideo is offline Dxvideo  Turkey
diyAudio Member
 
Dxvideo's Avatar
 
Join Date: Nov 2003
Location: Turkey
Send a message via Yahoo to Dxvideo
For the gainclone topic;

The German guy says,

- "The separate star grounds. The signal ground is on the minus pole of the RCA connector (lower arrow). The second legs of the Cs caps are connected using a thick copper wire. In the middle of this wire, the power star ground is placed (upper arrow). Here the two ground wires from the PSU (the separate + and - grounds) and the speaker return arrive.
The two star grounds are connected by a thin and relatively long copper wire in order to lift the signal ground by a small amount.
This grounding scheme is done independently for both channels. ."

I cannot understand that. There are two gainclone independent. From the PSU there independent GNDs come to each GC board. Then they go another point seperated. Same time signal ground goes an another point seperated. Then they get connected via a thin and long cable. This procedure runs for every channels independent. And finally they comes together in enclosures chasis with mains earth....

Ouch.. They're too complex for me! If i make like that;

One ground comes from the power supply board to power star point,
One power ground (not connected to signal gnd on PCB) comes from each GC board to power star point,
One signal gnd comes from the source to signal star point,
One signal gnd comes from each GC board to signal star point.

Then signal star point connects to power star point via a 10ohm resistor, after all via two (reversed to eachother and in parallel) diode and a 100nF cap (in parallel) the power ground star point connects to mains earth (this earth point is directly connected to enclosures chasis...)

What happens?
  Reply With Quote
Old 12th December 2006, 05:19 PM   #4
student is offline student  Austria
diyAudio Member
 
Join Date: Dec 2006
@ pinkmouse you built a symasym ? nice
do you have pictures and maybe a part list ?

@ dxvideo sorry i dont know so much about electronic. and that's exactly the reason why i posted my question in this forum
  Reply With Quote
Old 12th December 2006, 05:31 PM   #5
AKN is offline AKN  Sweden
No snake oil
diyAudio Member
 
AKN's Avatar
 
Join Date: Aug 2005
Location: In the middle of Sweden
Send a message via MSN to AKN
Hi,

http://www.lf-pro.net/mbittner/Sym5_...ymasym5_3.html
__________________
/ Anders
  Reply With Quote
Old 12th December 2006, 08:49 PM   #6
CarlosT is offline CarlosT  United States
diyAudio Member
 
Join Date: Oct 2006
Isn't there a more elegant way of doing a P2P GC? I mean that one dogbreath did is cool but...butch? Is that the right word?
  Reply With Quote
Old 12th December 2006, 09:07 PM   #7
student is offline student  Austria
diyAudio Member
 
Join Date: Dec 2006
thx !!
  Reply With Quote
Old 12th December 2006, 09:38 PM   #8
PMA is offline PMA  Europe
Design engineer, consultant
diyAudio Member
 
PMA's Avatar
 
Join Date: Apr 2002
Location: Prague
Symasym is quite another league than that Gainclone child toy.
  Reply With Quote
Old 12th December 2006, 10:56 PM   #9
diyAudio Moderator
 
pinkmouse's Avatar
 
Join Date: Apr 2002
Location: Chatham, England
Quote:
Originally posted by student
@ pinkmouse you built a symasym ? nice
do you have pictures and maybe a part list ?
How about a nice big thread to keep you busy!

Explendid amplifier designed by Michael Bittner, our MikeB
__________________
Rick: Oh Cliff / Sometimes it must be difficult not to feel as if / You really are a cliff / when fascists keep trying to push you over it! / Are they the lemmings / Or are you, Cliff? / Or are you Cliff?
  Reply With Quote
Old 13th December 2006, 02:32 PM   #10
student is offline student  Austria
diyAudio Member
 
Join Date: Dec 2006
perfect

i think ill first start with the gainclone, cause i never built an amplifier before and then ill try my luck on a syasym. nice summer project
  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
Symasym PCB Khron Solid State 58 17th May 2012 08:18 AM
Troubleshooting your Symasym anatech Solid State 235 22nd September 2011 10:40 PM
FS 2* DIY Symasym boards Andypairo Swap Meet 11 1st February 2009 02:59 PM
symasym 5.3 parts 406vette Parts 2 17th February 2008 08:34 PM


New To Site? Need Help?

All times are GMT. The time now is 09:12 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