Hello guys. I´m working in a telecommunications company.
Yesterday, I was in a store place and I found a couple
of tubes. I decided to take a pair, ´cause they are
reeplacements of equipment that It was out of service a
couple of years ago...well...more than 10...I felt like Lara Croft...
Here a list of the tubes:
National: 5Y3GT, 6360A, 6CK6/EL83
RCA:12AT7/ECC81
Sylvania: 6F6GT, 6AK5/EF95
Phillips: EF91
A good mix, not??
Well, I was searching in the Web, ´cause I don´t have
any experience with tubes and I found only three are
used in audio applications:
5Y3GT,12AT7 and 6F6GT...Is it rigth???
5Y3GT is a rectifier
12AT7 is used in preamps
6F6GT is used in amps.
The others:
EF91 (RF applications), 6CK6 (Video), 6AK5 (HF amp),
6360A (???)
I want to make a good preamp and, if It´s possible, a
decent amplifier (I mean 30W... more or less)
Question: I was reading that is possible to use 12AT7 in
"replacement" of 12AX??? When I said replacement I mean
that is suitable for similar application... What are your
opinions?
Question: Any idea of schematics of some of the tubes???
Something about 6F6GT??? I think that the "others"
are a litle more common...
Any comments and advices will be appreciate.
Thank you very much.
Greetings.
Marcelo
from Buenos Aires - Argentina
Yesterday, I was in a store place and I found a couple
of tubes. I decided to take a pair, ´cause they are
reeplacements of equipment that It was out of service a
couple of years ago...well...more than 10...I felt like Lara Croft...
Here a list of the tubes:
National: 5Y3GT, 6360A, 6CK6/EL83
RCA:12AT7/ECC81
Sylvania: 6F6GT, 6AK5/EF95
Phillips: EF91
A good mix, not??
Well, I was searching in the Web, ´cause I don´t have
any experience with tubes and I found only three are
used in audio applications:
5Y3GT,12AT7 and 6F6GT...Is it rigth???
5Y3GT is a rectifier
12AT7 is used in preamps
6F6GT is used in amps.
The others:
EF91 (RF applications), 6CK6 (Video), 6AK5 (HF amp),
6360A (???)
I want to make a good preamp and, if It´s possible, a
decent amplifier (I mean 30W... more or less)
Question: I was reading that is possible to use 12AT7 in
"replacement" of 12AX??? When I said replacement I mean
that is suitable for similar application... What are your
opinions?
Question: Any idea of schematics of some of the tubes???
Something about 6F6GT??? I think that the "others"
are a litle more common...
Any comments and advices will be appreciate.
Thank you very much.
Greetings.
Marcelo
from Buenos Aires - Argentina
6F6 is a power pentode - a pair can deliver 15 watts or more. If there are four, it would be a start at a stereo amp. If there are two, a single ended stereo amp is a possibility - but only about four watts per channel. I have a little amp like this on my computer (12AX7 and 6AQ5s). If you want to build something, I can give some pointers.
12AT7 is lower gain, higher power than 12AX7 - makes a good driver tube as well as preamp. 6360 is a odd one - dual pentode for RF amp at 200 MHz - but it is specified for audio too - see http://frank.pocnet.net/sheets/133/6/6360.pdf
12AT7 is lower gain, higher power than 12AX7 - makes a good driver tube as well as preamp. 6360 is a odd one - dual pentode for RF amp at 200 MHz - but it is specified for audio too - see http://frank.pocnet.net/sheets/133/6/6360.pdf
Thank you for your answer Tom.
In these days, I´ll start a design, in spite of I´m not specialized in tubes. Yesterday I was reading a lot and I think that It´s not so complicated. At leat I hope so...
Greetings and I´m sorry for my english...🙂 🙂
Marcelo.
In these days, I´ll start a design, in spite of I´m not specialized in tubes. Yesterday I was reading a lot and I think that It´s not so complicated. At leat I hope so...
Greetings and I´m sorry for my english...🙂 🙂
Marcelo.
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