GC 0,22R output resistor - 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 1st March 2004, 11:08 PM   #1
2Bak is offline 2Bak  Denmark
diyAudio Member
 
Join Date: Apr 2002
Default GC 0,22R output resistor

In one of my Gainclones I use Caddocks MP915 0,22R in output with this schematics: http://home.comcast.net/~greggbaker/invertedLM3875.gif
Those Caddocks are quite expensive. In another of my Gainclones I used an inexpensive 0,2R power resistor, and I'm rebuilding this one, so maybe I should use the opportunity to switch to Caddocks while I'm at it, however I'm not sure I could hear any difference compared to the Caddocks....

My question is: Does the quality of the 0,22R resistor have any importance on the sound quality of this amp, at all..?

I am gonna use this 0,22r, and I won't leave it out as many have suggested

Thanks
Jan
  Reply With Quote
Old 1st March 2004, 11:17 PM   #2
diyAudio Member
 
leadbelly's Avatar
 
Join Date: Dec 2002
Location: Calgary, Alberta
I do not understand why you would post this. You are in a privileged position of having a GC built one way and a GC built the other way. Don't you trust your own ears? Did I miss something?
__________________
Aerodynamics are for people who can't build engines. Enzo Ferrari
  Reply With Quote
Old 1st March 2004, 11:20 PM   #3
BrianGT is offline BrianGT  United States
diyAudio Moderator Emeritus
 
BrianGT's Avatar
 
Join Date: Jan 2002
Location: near Atlanta, GA
Send a message via AIM to BrianGT
Indeed, try listening to both configurations yourself, and I also recommend trying it without any resister in series with the output.

--
Brian
  Reply With Quote
Old 1st March 2004, 11:25 PM   #4
Banned
 
Join Date: Apr 2002
Location: Germany, Clausthal
the best you can do for your reputation on diyaudio.com is to post the GC sound much better with the expensive resistor, and you will never go back and use cheap resistors anymore. You even canīt understand how you ever listened to any music before with pleasure.

I personally donīt belive you or anyone human is able to hear any difference between resistors, but oops, it was a big mistake of mine to admit this here in public.
  Reply With Quote
Old 2nd March 2004, 12:10 AM   #5
2Bak is offline 2Bak  Denmark
diyAudio Member
 
Join Date: Apr 2002
At the moment with my speakers and all my other gear, I cannot hear any difference. Perhaps If I tried those two configurations on some other gear I could tell a difference, who knows.

Music is what matters for me, not components. And I wonder if I was a fool spending that money on the Caddocks in the first place ;-)
Being hooked on DIY, sometimes I find myself loosing my ground control, and presuming expensier is better, instead of using my time on listening to music, that's for sure.
I trust my ears and my feelings when I listen to good music. I'm not sure I trust my ears when I have to audition audio gear.

But most importantly: I'm happy with my DIY amps and that's what counts for me, and I believe I've found in the Gainclone an amplifier I can live with for many years.

Yes Leadbelly, this posting was a waste of time.
  Reply With Quote
Old 2nd March 2004, 12:20 AM   #6
diyAudio Member
 
Peter Daniel's Avatar
 
Join Date: Jul 2002
Location: Toronto, Canada
Send a message via AIM to Peter Daniel
Don't use any resistor, you probably don't need it.
  Reply With Quote
Old 2nd March 2004, 12:23 AM   #7
diyAudio Member
 
Peter Daniel's Avatar
 
Join Date: Jul 2002
Location: Toronto, Canada
Send a message via AIM to Peter Daniel
Quote:
Originally posted by till

I personally donīt belive you or anyone human is able to hear any difference between resistors, but oops, it was a big mistake of mine to admit this here in public.
Maybe you should read this?
http://www.audioasylum.com/forums/hi...ges/15679.html
  Reply With Quote
Old 2nd March 2004, 12:23 AM   #8
Banned
 
Join Date: Apr 2002
Location: Germany, Clausthal
Quote:
Music is what matters for me, not components. And I wonder if I was a fool spending that money on the Caddocks in the first place ;-)
ok, you are on the right way, a little reflexion like that is something a lot people on this board could need...
  Reply With Quote
Old 2nd March 2004, 12:31 AM   #9
2Bak is offline 2Bak  Denmark
diyAudio Member
 
Join Date: Apr 2002
Quote:
Originally posted by Peter Daniel
Don't use any resistor, you probably don't need it.
Why, Peter...?
What's it used for, by the way?

/Jan
  Reply With Quote
Old 2nd March 2004, 12:54 AM   #10
sreten is offline sreten  United Kingdom
diyAudio Member
 
Join Date: Nov 2003
Location: Brighton UK
Having an 0.22R allows you to omit the output inductor.

Though adding the missing Zobel seems a good idea to me.

sreten.
  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
Opamp output resistor.. jethdub Chip Amps 3 21st January 2008 04:46 PM
preamp output stage resistor from output to V- ? ? Bernhard Solid State 4 19th October 2007 03:55 PM
why a cap and resistor at output of leach? Wagener Solid State 2 13th August 2004 08:08 PM
5% output resistor xplod1236 Parts 4 31st July 2004 01:29 AM
Gainclone output resistor aeronaut Chip Amps 17 7th May 2004 10:26 PM


New To Site? Need Help?

All times are GMT. The time now is 04:20 AM.


vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2014 DragonByte Technologies Ltd.
Copyright Đ1999-2014 diyAudio

Content Relevant URLs by vBSEO 3.3.2