Help! Want to Diy Tube Amp!

jtjy · 18th December 2010, 03:06 PM

Hi guys, have diyed some class d amp before and wishes to diy some tube amp but do not know where to start? any recommendations for a decent tube amp kit for a beginner ?

mr2racer · 18th December 2010, 03:09 PM

Here's a great place to start! Triode Electronics Tube Amp Kits Transformers Tubes Dynaco Upgrades and Parts

indianajo · 04:50 PM

I've bought from Triode. If they ship the wrong part, the replacement shipping is free. They also have the most convenient on-line tube datasheets. They are near chicago. Nice to see source of Dynaco replacement parts that aren't from the reject pile of the Dynaco bankruptcy.

brucetassin · 18th December 2010, 04:59 PM

Hi JTJY,

here is a great place to start....

boozhoundlabs.com/howto/

He goes into great detail on DIYing
a 6V6 SE.

I built one and it sounds really good.
Not golden ear tho, and I have no clue
how much power it puts out but it more
than fills a 12 X 15 room using 12" 3 way
speakers.

mr2racer · 18th December 2010, 05:02 PM

Is that chassis non-stick?

brucetassin · 18th December 2010, 06:00 PM

Hi m2racer,
yes it sure is non stick. You may be surprised to learn the benefits of using
non-stick cake pans for chassis. the surface is so slick the eddie currents and grould-loop electrons cant stick and fall off thereby affording much better sound acoustics. the one small problem is you need to vacuum under the amp at least once a month to get rid of the stray electrons. the sound quality so so improved you can hear it all the way to the bank.

mr2racer · 18th December 2010, 06:06 PM

Tres cool!

jtjy · 18th December 2010, 06:19 PM

thanks guys! triode amp to me are expensive and i cant afford them as i am just a student atm. any more cheap n decent recommendations ?

mikje · 18th December 2010, 06:22 PM

I found an old console at a thrift shop. I pulled the amp and recapped it and am very happy with it. It can be modded as much as I'd like, but I like the way it sounds and works with the recap. Here are some before and after pics. The nice thing about doing it this way is that you can do a little at a time and spread out the expense. My next upgrade for it will be new output transformers.
So for I have about $100 into it. The new iron will be about another $125. If I upgraded to volume pot, that might add $25 to $50. New tubes could be anywhere from $75 and up. There are a lot of helpful members on this forum, whichever way you go.
Mike

mr2racer · 18th December 2010, 06:47 PM

There you go! A friend gave me an old Magnavox console built in 1948. I pulled the amp out, amp 101 B, and discarded the rest. For yucks I put just the 5Y3 rectifier tubes back in a few minutes ago. I have 520 V DC output. After the first cap 1.26 VAC ripple and after the second 0.00! On 60 year old caps. (I know powering up those caps without a Variac was stupid.) What is really cool is I found a second amp on eBay for $22.50. I also found a used Hammond 1650n OPT for $39.00 and a new one for $79.00. I now have most of the makings for a pair of Dynaco Mark IV clones

Search eBay with the parameter 'tube amp for repair' or 'tube amp for parts' and be patient you'll never know what you'll find.

And mikje, I have a pair of Sherwood S8000 receiver OPTs that are looking for a home.

18th December 2010, 03:06 PM	#1
jtjy diyAudio Member Join Date: Jan 2010	Help! Want to Diy Tube Amp! Hi guys, have diyed some class d amp before and wishes to diy some tube amp but do not know where to start? any recommendations for a decent tube amp kit for a beginner ?

18th December 2010, 04:48 PM	#3
indianajo diyAudio Member Join Date: Jan 2010 Location: Jeffersonville, Indiana USA	I've bought from Triode. If they ship the wrong part, the replacement shipping is free. They also have the most convenient on-line tube datasheets. They are near chicago. Nice to see source of Dynaco replacement parts that aren't from the reject pile of the Dynaco bankruptcy. __________________ Dynakit ST70, ST120, PAS2,Hammond H182(2 ea),H112,A100,10-82TC,Peavey CS800S,SP2-XT's, T-300 HF Projs, Steinway console, Herald RA88a mixer, Wurlitzer 4500 Last edited by indianajo; 18th December 2010 at 04:50 PM.

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18th December 2010, 03:09 PM	#2
mr2racer diyAudio Member Join Date: Jul 2009	Here's a great place to start! Triode Electronics Tube Amp Kits Transformers Tubes Dynaco Upgrades and Parts

18th December 2010, 05:02 PM	#5
mr2racer diyAudio Member Join Date: Jul 2009	Is that chassis non-stick?

18th December 2010, 06:00 PM	#6
brucetassin diyAudio Member Join Date: Dec 2005 Location: Loganville, GA	Hi m2racer, yes it sure is non stick. You may be surprised to learn the benefits of using non-stick cake pans for chassis. the surface is so slick the eddie currents and grould-loop electrons cant stick and fall off thereby affording much better sound acoustics. the one small problem is you need to vacuum under the amp at least once a month to get rid of the stray electrons. the sound quality so so improved you can hear it all the way to the bank.

18th December 2010, 06:06 PM	#7
mr2racer diyAudio Member Join Date: Jul 2009	Tres cool!

18th December 2010, 06:19 PM	#8
jtjy diyAudio Member Join Date: Jan 2010	thanks guys! triode amp to me are expensive and i cant afford them as i am just a student atm. any more cheap n decent recommendations ?

18th December 2010, 06:47 PM	#10
mr2racer diyAudio Member Join Date: Jul 2009	There you go! A friend gave me an old Magnavox console built in 1948. I pulled the amp out, amp 101 B, and discarded the rest. For yucks I put just the 5Y3 rectifier tubes back in a few minutes ago. I have 520 V DC output. After the first cap 1.26 VAC ripple and after the second 0.00! On 60 year old caps. (I know powering up those caps without a Variac was stupid.) What is really cool is I found a second amp on eBay for $22.50. I also found a used Hammond 1650n OPT for $39.00 and a new one for $79.00. I now have most of the makings for a pair of Dynaco Mark IV clones Search eBay with the parameter 'tube amp for repair' or 'tube amp for parts' and be patient you'll never know what you'll find. And mikje, I have a pair of Sherwood S8000 receiver OPTs that are looking for a home.

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