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 Post subject: My SE 12SL7 - 6V6G stereo
PostPosted: Jan Mon 06, 2020 2:01 am 
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Location: Haledon, NJ, usa
A revisit to a great simple project:
Just sitting here tonight enjoying listening to the fruits of my labors from last year.
Here's my single-ended 12SL7 - 6V6G stereo amplifier.
These 6v6g tubes were made about 84 years ago in 1936... still creating magnificent sound!
Note: The extra sockets on the chassis are for optional use of (12sl7 or 12ax7) and (6v6 or 12v6 or 6aq5 or 12aq5) Whatever of those tubes you can find can be used in this amp as per design.
All prints and other images are on my web site http://www.pbpix.com/amp .
Attachment:
12sl7 - 6v6g se.jpg
12sl7 - 6v6g se.jpg [ 294.45 KiB | Viewed 700 times ]



Image

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Last edited by Pbpix on Jan Mon 06, 2020 8:03 am, edited 1 time in total.

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 Post subject: Re: My SE 12SL7 - 6V6G stereo
PostPosted: Jan Mon 06, 2020 6:54 am 
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Joined: Jan Thu 01, 1970 1:00 am
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Location: Haledon, NJ, usa
Here's the inside wiring of the chassis tubes underside and the power supply.
So you can see how simple and easy it is to build. Remember I have three extra parallel sockets to allow for the alternate use of miniature tubes as opposed to octals. So you can see how much less wiring there would be without including the extra sockets.

The last image, of course is the top view.

Attachment:
se 6v6gt inside.jpg
se 6v6gt inside.jpg [ 423.3 KiB | Viewed 664 times ]


Attachment:
se 6v6gt power.jpg
se 6v6gt power.jpg [ 328.55 KiB | Viewed 663 times ]


Attachment:
se 6v6gt top.jpg
se 6v6gt top.jpg [ 278.06 KiB | Viewed 661 times ]

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To be a man, Be a non-conformist, Nothing's sacred as the integrity of your own mind.
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 Post subject: Re: My SE 12SL7 - 6V6G stereo
PostPosted: Jan Wed 08, 2020 6:03 am 
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Joined: Aug Wed 26, 2009 1:50 am
Posts: 1573
Location: Mesquite NV 89027 (from Coventry, UK)
It looks as good as it did last year. I am glad that you are still enjoying it.


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 Post subject: Re: My SE 12SL7 - 6V6G stereo
PostPosted: Jan Wed 08, 2020 6:29 am 
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Location: Haledon, NJ, usa
Colin Ames wrote:
It looks as good as it did last year. I am glad that you are still enjoying it.

Well.... yeah ... of course.. lol I get it.
I know... but, in a way... it's a joyful ...revisited reminder...
get it?
it's so nice that every now and then I just want to share that pleasure with you guys.. y'know?

So as I'm drinking in that moment of all that pleasure... I feel an urge to remind you guys about what it is that I'm enjoying.. Do you get it?
To share it all... ( well...you can't hear what I'm hearing)
... but at least I can get close and let you imagine it through the schematic... and the eye-candy of seeing the wiring and the final build.

" A thing of beauty, is a joy forever"

------------------- John Keats --------------
A thing of beauty is a joy for ever:
Its loveliness increases; it will never
Pass into nothingness; but still will keep
A bower quiet for us, and a sleep
Full of sweet dreams
, ......

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To be a man, Be a non-conformist, Nothing's sacred as the integrity of your own mind.
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 Post subject: Re: My SE 12SL7 - 6V6G stereo
PostPosted: Jan Sun 12, 2020 6:18 am 
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Joined: Jan Thu 01, 1970 1:00 am
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Location: Haledon, NJ, usa
Today I tried rolling tubes.
I used a 12AX7 as the driver and 6AQ5s on the output and got REALLY surprisingly nice results.
Things sounded " Brighter/crisper"'
I pulled the 12AX7 and used its low noise equivalent tube the 7025 and that is wonderful as well.

I realized that the 12AX7 or 7025 has greater gain compared to the 12SL7 I had in there so I think that everything sounded better partly due to the higher drive signal.
So I pulled out the 6AQ5s and put the 6V6G tubes back... and this combo does sound fine too.

So if anyone here decides to build this great little amp, I think you'll be impressed using a 12AX7 or 7025 driving the 6AQ5 or the 6V6g....

But if you prefer to keep it small, then the 12AX7 or 7025 driving 6AQ5s is a great choice; and probably better on the budget.

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To be a man, Be a non-conformist, Nothing's sacred as the integrity of your own mind.
-Emerson


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 Post subject: Re: My SE 12SL7 - 6V6G stereo
PostPosted: Jan Mon 13, 2020 3:46 am 
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Joined: Jan Thu 01, 1970 1:00 am
Posts: 2143
Location: NorthWest TN.
I have enjoyed your posts for several years. Thanks for making these!


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 Post subject: Re: My SE 12SL7 - 6V6G stereo
PostPosted: Jan Mon 13, 2020 3:52 am 
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Joined: Jan Thu 01, 1970 1:00 am
Posts: 24073
Location: Haledon, NJ, usa
drmitch wrote:
I have enjoyed your posts for several years. Thanks for making these!

Thanks ... great fun and easy build
but most rewarding to hear

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To be a man, Be a non-conformist, Nothing's sacred as the integrity of your own mind.
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 Post subject: Re: My SE 12SL7 - 6V6G stereo
PostPosted: Jan Mon 13, 2020 7:07 am 
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Joined: Jan Thu 01, 1970 1:00 am
Posts: 13348
Location: Omak,wa,usa
hello Peter,
beautiful

Sincerely rich


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 Post subject: Re: My SE 12SL7 - 6V6G stereo
PostPosted: Jan Mon 13, 2020 10:29 pm 
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Joined: Jan Thu 01, 1970 1:00 am
Posts: 24073
Location: Haledon, NJ, usa
radiorich wrote:
hello Peter,
beautiful

Sincerely rich

Thanks Rich... maybe you'll find this amp easier to build than the 5902 amp (the one that John sent you the parts for)...since the sockets are larger on this amp.

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To be a man, Be a non-conformist, Nothing's sacred as the integrity of your own mind.
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