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Old 8th July 2002, 12:24 PM   #1
SHiFTY is offline SHiFTY  New Zealand
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Lightbulb My DIY amp (some pics)

Hi, wicked site, really enjoy the info... I just finished building my first DIY valve (tube) amp. Here it is!! (excuse crappy webcam quality)

Click the image to open in full size.

Click the image to open in full size.

Click the image to open in full size.

I bought it from a friend years ago for use as an electric guitar amp. One channel was blown, and i proceeded to blow up the other channel, at which point it went into storage. It was someone's kitset from the 70's, and never had a proper case, all very homemade looking, although very overengineered (check out the size of that power tranny!)

Anyway I have put it in a decent case, replaced all the components except the coupling caps (on order) and got 4 new Electroharmonix 6V6GTs for the o/p. Preamp tubes (3 12AX7, 1 12AU7) are a mix of (NOS) telefunken, philips miniwatt and RCA. Luckily i got them all free from a friend's dad, good on him!! I have also modified the circuit a little where it needed...

The sound is great, the old coupling caps worry me a bit so i havent played it much, but it has a real smooth sound which is a pleasure to listen to.

My next project is restoring a 1940's wooden radio; this valve thing is addictive!!!
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Old 8th July 2002, 09:05 PM   #2
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nice lookin amp.
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Old 8th July 2002, 09:50 PM   #3
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Very good job ShiFtY,

Next time you can try an open top valve amp.

Greetings
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Old 11th July 2002, 01:29 AM   #4
PedroPO is offline PedroPO  Portugal
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Nice amp! But I agree with promitheus.

Here is a pic of a amp of mine.
Attached Images
File Type: jpg ankitone.jpg (89.3 KB, 1124 views)
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Old 11th July 2002, 05:43 AM   #5
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Love both. Seriously *envious*
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Old 11th July 2002, 08:36 AM   #6
bawang is offline bawang  Malaysia
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You have my vote too, Lisandro......... Damn......
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Old 11th July 2002, 11:22 AM   #7
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Default I envy you TUBE amp owners!

I envy you TUBE amp owners.
I am a Solid man.
What beautiful amps you have.

Think I will put some Glowing TUBES
at top of my Solid State.

Then I get both good real hifi sound
and something nice to look at.....

Groman
enjoys a BEAUTY
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Old 17th July 2002, 10:10 PM   #8
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gromanswe wrote:

"Then I get both good real hifi sound
and something nice to look at....."


Oooooohhh them is fighting words!

Check out this site:

http://www.dwfearn.com

He makes tube.. yup tube microphone amplifiers for recording studios. I have listened to CDs made through these amps and with no eq used the sound far outperforms any other studios sound.

A well made two stage single ended amp (parts total of $350 USD at that!) can also outperform any $1000 USD solid state amp out there.

Sorry, but I have listened to and made both. And I still gravitate towards tubes.

Just buy a tube amp kit then you truly will get both true hifi sound and the beautiful glow!

OK, I am off my soap box now. Sorry to be so defensive.

Gabe
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Old 18th July 2002, 12:34 AM   #9
PedroPO is offline PedroPO  Portugal
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Gabevee:

check this site:

www.tacet.de

these guys produce some great recordings all analogue with tube microfones, tube amps, telefunken reel2reel analogue recorders and tube mixing table.

All tube, all analogue, all vintage, all great.

In the top, they even record in 180g vinyl
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