GC 0,22R output resistor

2Bak · 1st March 2004, 11:08 PM

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

leadbelly · 1st March 2004, 11:17 PM

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?

BrianGT · 1st March 2004, 11:20 PM

Indeed, try listening to both configurations yourself, and I also recommend trying it without any resister in series with the output.

--
Brian

till · 1st March 2004, 11:25 PM

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 can´t understand how you ever listened to any music before with pleasure.

I personally don´t 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.

2Bak · 2nd March 2004, 12:10 AM

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.

Peter Daniel · 2nd March 2004, 12:20 AM

Don't use any resistor, you probably don't need it.

Peter Daniel · 2nd March 2004, 12:23 AM

Quote:

Originally posted by till

I personally don´t 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

till · 2nd March 2004, 12:23 AM

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...

2Bak · 2nd March 2004, 12:31 AM

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

sreten · 2nd March 2004, 12:54 AM

Having an 0.22R allows you to omit the output inductor.

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

sreten.

1st March 2004, 11:08 PM	#1
2Bak diyAudio Member Join Date: Apr 2002 Location: Denmark	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

1st March 2004, 11:17 PM	#2
leadbelly diyAudio Member 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

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1st March 2004, 11:20 PM	#3
BrianGT diyAudio Moderator Emeritus Join Date: Jan 2002 Location: near Atlanta, GA	Indeed, try listening to both configurations yourself, and I also recommend trying it without any resister in series with the output. -- Brian

1st March 2004, 11:25 PM	#4
till 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 can´t understand how you ever listened to any music before with pleasure. I personally don´t 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.

2nd March 2004, 12:10 AM	#5
2Bak diyAudio Member Join Date: Apr 2002 Location: Denmark	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.

2nd March 2004, 12:20 AM	#6
Peter Daniel diyAudio Member Join Date: Jul 2002 Location: Toronto, Canada	Don't use any resistor, you probably don't need it.

2nd March 2004, 12:54 AM	#10
sreten 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.

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