• WARNING: Tube/Valve amplifiers use potentially LETHAL HIGH VOLTAGES.
    Building, troubleshooting and testing of these amplifiers should only be
    performed by someone who is thoroughly familiar with
    the safety precautions around high voltages.

HALOJOY - tube amp new bie - NEEDS HELP

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thanks to any anyone that hasn't forgotten me

you can call me
halojoy . halo . gro . groman . gromanswe
you can call me anything
no matter what you say
you still might consider me

(Bob Dylan, trevesty of "Gotta Serve Somebody")
- - - - - - -
you may be the heavy weight champion of the world
you might be associated with a long string of pearls

you may drink whiskey, you might drink milk
you may wear cotton, you may wear silk
you - still gotta SERVE SOMEBODY
well,
it might be the devil or it might be the lord, but
you still gotta serve somebody
- - - - -

And my opinion is
I have to serve some body, too
this body called "halojoy" - in the first place

- who else would bother to serve mebody?

################################################################

as I am in the Tube-territory now
I'd like to thank Jean-Paul for his words of respect
jean-paul said:
Hopefully Halo removes the questionnable ( ?,never seen it ) content of his website.

What would this forum be without him ? :bawling:

I don't agree always with Halo on technical matters but his wit and respect for other's opinions can give new insight in matters. Never a dull discussion when Halo is around ! :nod:

/Jean-Paul - wishes Halo comes back to remind us we're only human
We can NOT LIKE everybody else
We can NOT THINK like everybody else
We can NOT CARE FOR everybody else

but, still

We CAN SHOW everybody else SOME RESPECT


and you'll find, in most cases,
you get respectable behavior back towards yourself

####################################################################

And with all respect for Frank,
please stay out of this thread, fdegroove!!!! (help me moderators!)

Do not take it personally, fdegroove.
It is just that I wish this thread of mine
to have posts with some substance


####################################################################

some reading - some thoughts for my project

December 2002 - halojoy starts a thread in "Tubes"!

Halojoy Tube Amplifier Project - New!

Some of the tubes, triodes, I consider to experiment with
in Line pre amps and Headphones amps (Voltage Gain 4-10),
Consisting of 1 or 2 Single Ended stages and Cathode Follower output:

6H30pi-EB(6H30P) 6N1P-SV EF86 7025 6SN7 PCC88(7DJ8) 6922 6AS7G

Several are Svetlana or Sovtek tube versions.

I do not consider any other tubes! No exotic mumbo jumbo.
Why?

Because some of the tubes above are GOOD ENOUGH
and are what I can get a safe supply of, over time,
and to a reasonably good price at my Swedish TubeShop.

Any Help, Advice, Schematics and Pictures are Welcome!

halojoy
- visits Ceské Republiky CZE January 2003
 
halojoy said:

you can call me
halojoy . halo . gro . groman . gromanswe
you can call me anything - no matter what you say

I'd like to thank Jean-Paul for his words of respect
We can NOT LIKE everybody else
We can NOT THINK like everybody else
We can NOT CARE FOR everybody else
but, still
We can TRY to show RESPECT

and you'll find, in most cases, you get respectable behavior back towards yourself.
Of what I've understand about some threads
in this forum
There are some people around, posting a lot, who doesn't even TRY to do the best they CAN do

####################################################################

Thanks, Frank, fdegrove
We do not at all like each other but yet,
I will not talk dirt of you, NOT TOO MUCH at least ;)

It is just that I wish this thread of mine
to have posts with some substance
If you have a post with more substance than one fart among several 1000 farts
you, fdegrove for sure is welcome to post here.
How can anyone stop them kinda fdegrove?

####################################################################

Some reading - thoughts for my project:

December 2002 - halojoy starts a thread in "Tubes"!

Halojoy Tube Amplifier Project - New!

Some of the tubes, triodes, I consider to experiment with
in Line pre amps and Headphones amps (Voltage Gain 4-10),
Consisting of 1 or 2 Single Ended stages and Cathode Follower output:

6H30pi-EB(6H30P) 6N1P-SV EF86 7025 6SN7 PCC88(7DJ8) 6922 6AS7G

Several are Svetlana or Sovtek tube versions.

Any Help, Advice, Schematics and Pictures are Welcome!

halojoy
- visits Ceské Republiky CZE January 2003

I have just opened my page "Halojoy Tube Amplifier Project"
Updates will come, with My own Circuits, Have Patience!

halojoy - is alright, on a day like today
 
What is a good tube line amp?

What is a good tube line amp configuration?

Restrictions:
Neither in- or output transformator.
Only using tube/s that are commonly available,
not necessary low-priced. I only need a couple.
No feedback.
(If I wanted feedback I might as well use
an OP-amp with several 1000s of gain.
OP-amps have a considerabe gain
even at closed loop gain = 1, as buffer.)

I might consider a solid BJT output buffer.
An Emitter follower in class A. With separate Power Supply.
With 1 tube, maybe a paralleled triode, single end
as input. Voltage gain as I said before 4-10.

A low or moderate gain tube with low noise.
would n't that be what I should look for?

I put up a newly found Tubesite as "Link Of The Day".
It is a nice little Spanish :att'n: site
with lots of schematics and some great info
about Russian Valves 6N1P 6N2P and how to use them tubes best.


halojoy Tube Amplifier Project with link of the day

Photo shows an OTL HeadPhone amp.
 

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Halojoy,

I am extremely surprised that you need any help with this!
You have shown yourself to be more than capable with SS designs in the past.
Why don't you show us what you have in mind, in schematic form, and you can decide whether to accept any suggestions?

Things to consider:
Required gain
Output impedance

Cheers,
 
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