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Old 1st April 2018, 04:45 PM   #2221
polaron is offline polaron  France
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Commercial Gainclone kit- building instructions
Hello!

I decided to redone everything - from scratch!
Here is my link with the new pictures
all contacts are crimped or tied, then soldered
I made some room between the parts
Album photos GC LM3875-Tocos version - Casimages.com

Peter, does it make a difference a GC point by point or with your boards, with such a tiny circuit? franckly, it is hard to believe, but I learned, doing these GCs

so far so good, it sounds much better and measures well
the big caps are Supertechs, 10 000uF each
prp resistors are sweet, but somehow to much in the soft side for me,,,
I'll make a long check next, let's see if it plays music for hours, without issues

next steps, to put it in a nice box, to make my final gainclone and finally to assemble a serious classA amp,,,
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Old 1st April 2018, 05:30 PM   #2222
Peter Daniel is offline Peter Daniel  Canada
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I used to build gainclones p2p but after coming up with boards, I preferred the boards: it's so much easier to do it and the differences in sound are probably negligible.

6moons audio reviews: Audio Zone AMP-1 by Audio Oasis
6moons audio reviews: AudioZone PRE-1T & AMP-2
6moons audio reviews: Audiosector Patek
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Old 1st April 2018, 07:51 PM   #2223
polaron is offline polaron  France
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Commercial Gainclone kit- building instructions
Yes Peter, I agree, I'll use boards
I know all those links, of course, since a long time ago
I had all 47labs, 18 years ago,,,
One day I saw a GC like the gaincard, (but silver), in Toronto, near Rob's hifi shop,,,
it doesn't exist anymore with all those turntables

Anyway, thanks for the help
it seams that the mystery is gone

BTW,

It's been a few hours that the amps are playing without issues!
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Old 1st April 2018, 08:03 PM   #2224
polaron is offline polaron  France
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Commercial Gainclone kit- building instructions
I would like to try the Belleson Superregs between the output psu and pins 1 and 4 of the LM3875
does it makes sense??
it should work!

a good regulator will block power line ripple from the speakers and provide a more stable supply voltage when current is required quickly by the load.

Maybe I can hear improvement with a monolithic regulator, then I'll replace it with a Superpower, it will be even better.
what do you say?
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Old 14th April 2018, 08:25 PM   #2225
polaron is offline polaron  France
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Commercial Gainclone kit- building instructions
Hello!
I have four 20k z foils
Can I use them in the lm3875 GC in the place of those 22k?
Thank you!
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Old 15th April 2018, 12:20 AM   #2226
Peter Daniel is offline Peter Daniel  Canada
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20k can be used as well, no problem at all.
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Old 15th April 2018, 07:03 AM   #2227
polaron is offline polaron  France
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Commercial Gainclone kit- building instructions
Great!
Thank you Peter
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Old 10th July 2018, 04:37 PM   #2228
johnm is offline johnm  United Kingdom
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Hi Peter.

With the Audiosector website currently being unavailable, is it possible for you to host your Gainclone kit instruction PDF elsewhere temporarily? I’ve lost my original downloaded copy.
Thanks.

John.
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Old 10th July 2018, 04:42 PM   #2229
Peter Daniel is offline Peter Daniel  Canada
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I can email it to you.
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Old 10th July 2018, 07:00 PM   #2230
johnm is offline johnm  United Kingdom
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Thanks Peter - Will PM you.
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