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Old 31st December 2002, 12:11 AM   #1
OliverD is offline OliverD  Germany
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Question Solid state guy found some tubes...

Recently I moved and found four old tubes when I was sorting the components...

2 x ECC82
1 x E88CC
1 x 12B4A

Up to now I've only built solid state circuits... No idea if these tubes are any good.

But I always found those nice glowing things fascinating... I think I'll give it a try... Just to play with them and learn as I'm satisfied with my current system.

Are there any simple tube audio circuits using only the tubes I already have?

Doesn't matter really whether it is a line stage, mic preamp, power amp...
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Old 31st December 2002, 12:21 AM   #2
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Default KEIN PROBLEM.

Hi,

You could build at least a little preamp with those tubes....you will then be a total tube addict an before you realise you will have used your entire stash...

Cheers,
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Old 31st December 2002, 12:24 AM   #3
Colt45 is offline Colt45  Serbia
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looks like decent preamp material to me.
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Old 31st December 2002, 12:48 AM   #4
OliverD is offline OliverD  Germany
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"You could build at least a little preamp with those tubes....you will then be a total tube addict an before you realise you will have used your entire stash..."

You never know :-)

I sold a very old Tektronix oscilloscope a year ago... $60, for about 120 tubes... All still working... Now that I've seen what you guys are building, I think I was a BIG idiot - I should have kept them.

Anyway, you suggest a preamp, can you point me in some direction where to find schematics or webpages with projects? Thank you very much.
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Old 31st December 2002, 12:57 AM   #5
Colt45 is offline Colt45  Serbia
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btw, ECC82 = 12AU7, ECC88 = 6DJ8 (or close).

probably a thousand schemes if you just plug '12AU7 preamp' into google.

I'll look around a bit maybe ...

edit: Oh, I should mention... what are you going to use this for? need RIAA?
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Old 31st December 2002, 01:00 AM   #6
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Default TEARS IN MY EYES.

Hi,

As you said...bygones.

With an ECC88 alone you can build a preamp already...just look in this thread and you'll find a few samples.

Cheers,
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Old 31st December 2002, 02:14 AM   #7
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Default Re: TEARS IN MY EYES.

Quote:
Originally posted by fdegrove
With an ECC88 alone you can build a preamp already...just look in this thread and you'll find a few samples.
Yeah, but with another 12B4A and a couple of chokes, you could build something even nicer.
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Old 31st December 2002, 01:58 PM   #8
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A month ago I myself had 4 tubes. Monday I brought home 3 large boxes of tubes, I now have over 400 tubes all NOS aged beautiful gleeming tubes.
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Old 31st December 2002, 03:57 PM   #9
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Quote:
Originally posted by burnedfingers
A month ago I myself had 4 tubes. Monday I brought home 3 large boxes of tubes, I now have over 400 tubes all NOS aged beautiful gleeming tubes.
My brother calls me the tube slut, because when I see interesting or bargain tubes I buy them. Added about 40 to the collection this week.
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Old 31st December 2002, 04:03 PM   #10
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ROFLMAO

Tube Slut
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