My DIY amp (some pics)

SHiFTY · 8th July 2002, 12:24 PM

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

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!!!

FlMike · 8th July 2002, 09:05 PM

nice lookin amp.

promitheus · 8th July 2002, 09:50 PM

Very good job ShiFtY,

Next time you can try an open top valve amp.

Greetings

PedroPO · 11th July 2002, 01:29 AM

Nice amp! But I agree with promitheus.

Here is a pic of a amp of mine.

Lisandro_P · 11th July 2002, 05:43 AM

Love both. Seriously *envious*

bawang · 11th July 2002, 08:36 AM

You have my vote too, Lisandro......... Damn......

gromanswe · 11th July 2002, 11:22 AM

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

Gabevee · 17th July 2002, 10:10 PM

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

PedroPO · 18th July 2002, 12:34 AM

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

8th July 2002, 12:24 PM	#1
SHiFTY diyAudio Member Join Date: Jul 2002 Location: New Zealand	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) 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!!!

11th July 2002, 11:22 AM	#7
gromanswe Account Disabled Join Date: Jul 2002 Location: North	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

17th July 2002, 10:10 PM	#8
Gabevee diyAudio Member Join Date: Feb 2002 Location: Richmond, VA.	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 __________________ Gabe CGV Electronics Home of the CGV-300B amplifier on a budget

18th July 2002, 12:34 AM	#9
PedroPO diyAudio Member Join Date: Jan 2002 Location: Lisbon,Portugal	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 __________________ Pedro Oliveira

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8th July 2002, 09:05 PM	#2
FlMike diyAudio Member Join Date: Dec 2001 Location: Jacksonville,Fl	nice lookin amp.

8th July 2002, 09:50 PM	#3
promitheus diyAudio Member Join Date: Jan 2001 Location: Germany	Very good job ShiFtY, Next time you can try an open top valve amp. Greetings

11th July 2002, 05:43 AM	#5
Lisandro_P diyAudio Member Join Date: Oct 2000 Location: Argentina	Love both. Seriously envious

11th July 2002, 08:36 AM	#6
bawang diyAudio Member Join Date: Oct 2001 Location: Malaysia	You have my vote too, Lisandro......... Damn......

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