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Hi-end 845 with only two stage
Hi-end 845 with only two stage
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Old 24th August 2011, 05:53 PM   #241
gaborbela is online now gaborbela  Canada
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Join Date: Sep 2005
Hello Thomas

I have more than 20 years DIY experience, also I work as a assistant in TV repair shop and with electrician mostly residential but sometimes in factory with 360V to.
I have some soldering skills that is not a problem.
I have more than half of the parts for these amp, I go slowly how I get some money..
If there is a working schematic I can build anything.
I do not own oscilloscope etc but probably I can get some help from my friend. Some DD Multimeter etc I have of course.

Greetings gabor
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Old 24th August 2011, 07:19 PM   #242
Vinylsavor is offline Vinylsavor  Germany
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Location: Lindau
Hi Gabor,

ok that's good. Just wanted to make sure since there are dangerously high voltages involved in such a project

Best regards

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Old 24th August 2011, 08:19 PM   #243
gaborbela is online now gaborbela  Canada
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Join Date: Sep 2005
Thank you Thomas
I know,I thought about before I started to collect the parts!
Safety first.
I think these 2 stage will be better than the schematic I posted. Even do I'll purchased some 6SN7 & 6J5 tubes also octal sockets..
I see Andrea and many other (guru) DIY-ers go with two stage.
Someone told me avoid the instage transformer, use just tubes but I think the transformer still better than many coupling capacitors.
I attache some picture from the parts I already have..
12PC Epcos
3PC amplifier enclosure, two the same as on the picture, one larger for PS
4PC GM70, 2 socket
high voltage choke - about 3.5Kg, 12PC electrolytic etc.

Greetings gabor
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Old 25th August 2011, 06:50 AM   #244
gaborbela is online now gaborbela  Canada
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Join Date: Sep 2005
Default Fiat OPT

Hello Andrea

How much it cost a pair Fiat OP transformer for GM70. I think 25-30W would be enough.
Please let me know
Thank you very much

Greetings gaborbela

Originally Posted by audiodesign View Post
look this dc solution

GM70 amplifier with Fiat transformers
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