Tube Drag Racing!

Sch3mat1c · 27th December 2004, 08:47 AM

Check my updated sig. What say ye, can we get some tests that border on demanding the GOT's vengance?

I'll work on either the 6L6 as described (not that I have enough to burn) or my favorite, the 12AU7. Who else wants to earn some fame as producing the most power from a single tube?

Tim

audiousername · 27th December 2004, 09:46 AM

Getting 500W out of a 6L6 at 4am..... LOL

It's good to see I'm not the only person with a problem round here

DigitalJunkie · 27th December 2004, 11:17 AM

Humm....

I'll have to see what I have around for tubes,and a PSU...Got a couple kinda-weak metal 6L6's,and a couple old (near dead,wish they were good!) Mullard EL34's that can go for some experimenting...Got a few 807's,6080's..hmm..I'll have to see what else I can dig up..

As for a PSU.... hmm,I have a neon sign tranny

But I think that might be a bit much..
I dunno if I have anything suitable for larger tubes,maybe I'll have to see how far I can push some subminiatures..Think I got a couple PSU's suitable for that.

Got plenty of 12a_7's,6AU6's,and the usual stash of similar small tubes..

Any guesses as to how far a single 12AX7 will go? 10W..25W?

Edit:
Our friend Nick Sheldon (known for his big,crazy SE amps) has a Yahoo Group dedicated to the subject.
http://groups.yahoo.com/group/single...alveamplifiers
Havn't seen him around in a while,I wonder if he's a member here?

Fuling · 27th December 2004, 11:39 AM

This is the kind of stuff that makes this hobby worth messing with

Maybe I should dig up my 813´s and some old MWO transformers...

SY · 27th December 2004, 12:08 PM

Cute idea, Tim, but I'm out. I know I can get 300W out of a 6LF6, but only for a second or two, the the plate will blind you. So how I'm supposed to bring the input level knob up, then (quickly) down, hit the number on the upswing, and snap a photo that actually has the 'scope screen in it before the tube melts down.... think I'll just applaud from the audience and watch for crashes.

pedroskova · 27th December 2004, 12:31 PM

Pretty soon the factory teams will come in and drive the "bring what ya got" little guy out. It's inevitable.

smoking-amp · 27th December 2004, 08:58 PM

Try submerging the tube in liquid nitrogen, might get a few seconds longer before it sets off a 9.0 tsunami.

Power supply:
http://www.insulators.com/service/folsom.htm

Just saw this over on the SS forum, Alex has figured out how to make a SS triode. Interesting. That ought to get the GOT really steamed:

Non-feedback parametric linearisation in FETs

http://www.ant-audio.co.uk/Theory/Pa...earisation.htm

Don

Geek · 28th December 2004, 12:45 AM

You underestimate the power of RF PULSE

Think......

- Class C
- 1% duty cycles
- DC drive with SS
- Resonant load

Brett · 28th December 2004, 03:35 AM

Finally, tubeheads have found something to compete with the pointlessness of dB drag racing.

And at last, a good use for 12AU7's

Geek · 29th December 2004, 09:58 AM

Brett, the cynic

If you and Sch3mat1c met, you might be lifelong friends

27th December 2004, 08:47 AM	#1
Sch3mat1c diyAudio Member Join Date: Jan 2003 Location: Milwaukee, WI	Tube Drag Racing! Check my updated sig. What say ye, can we get some tests that border on demanding the GOT's vengance? I'll work on either the 6L6 as described (not that I have enough to burn) or my favorite, the 12AU7. Who else wants to earn some fame as producing the most power from a single tube? Tim __________________ See my Electronics webpage -- the home of Vacuum Tube Drag Racing. The key to being a successful Audiophile: "I reject your reality and substitute my own!"

27th December 2004, 12:08 PM	#5
SY diyAudio Moderator Join Date: Oct 2002 Location: Austin, TX Blog Entries: 1	Cute idea, Tim, but I'm out. I know I can get 300W out of a 6LF6, but only for a second or two, the the plate will blind you. So how I'm supposed to bring the input level knob up, then (quickly) down, hit the number on the upswing, and snap a photo that actually has the 'scope screen in it before the tube melts down.... think I'll just applaud from the audience and watch for crashes. __________________ "...we stumble and get up, we are sad, confident, insecure, feel loneliness and joy and love. There is nothing more; but I want nothing more.” - Christopher Hitchens 1949-2011

27th December 2004, 08:58 PM	#7
smoking-amp diyAudio Member Join Date: Dec 2001 Location: Hickory, NC	Nitro powered tubes Try submerging the tube in liquid nitrogen, might get a few seconds longer before it sets off a 9.0 tsunami. Power supply: http://www.insulators.com/service/folsom.htm Just saw this over on the SS forum, Alex has figured out how to make a SS triode. Interesting. That ought to get the GOT really steamed: Non-feedback parametric linearisation in FETs http://www.ant-audio.co.uk/Theory/Pa...earisation.htm Don __________________ Ohms Law V = I R

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27th December 2004, 09:46 AM	#2
audiousername diyAudio Member Join Date: Jul 2004 Location: Melbourne, Victoria	Getting 500W out of a 6L6 at 4am..... LOL It's good to see I'm not the only person with a problem round here

27th December 2004, 11:17 AM	#3
DigitalJunkie diyAudio Member Join Date: Apr 2003 Location: Portland,Oregon Blog Entries: 3	Humm.... I'll have to see what I have around for tubes,and a PSU...Got a couple kinda-weak metal 6L6's,and a couple old (near dead,wish they were good!) Mullard EL34's that can go for some experimenting...Got a few 807's,6080's..hmm..I'll have to see what else I can dig up.. As for a PSU.... hmm,I have a neon sign tranny But I think that might be a bit much.. I dunno if I have anything suitable for larger tubes,maybe I'll have to see how far I can push some subminiatures..Think I got a couple PSU's suitable for that. Got plenty of 12a_7's,6AU6's,and the usual stash of similar small tubes.. Any guesses as to how far a single 12AX7 will go? 10W..25W? Edit: Our friend Nick Sheldon (known for his big,crazy SE amps) has a Yahoo Group dedicated to the subject. http://groups.yahoo.com/group/single...alveamplifiers Havn't seen him around in a while,I wonder if he's a member here?

27th December 2004, 11:39 AM	#4
Fuling diyAudio Member Join Date: Aug 2001 Location: Sweden (Mora)	This is the kind of stuff that makes this hobby worth messing with Maybe I should dig up my 813´s and some old MWO transformers...

27th December 2004, 12:31 PM	#6
pedroskova RIP Join Date: Dec 2002 Location: C'ville VA, USA	Pretty soon the factory teams will come in and drive the "bring what ya got" little guy out. It's inevitable.

28th December 2004, 12:45 AM	#8
Geek diyAudio Member Join Date: Sep 2004	You underestimate the power of RF PULSE Think...... - Class C - 1% duty cycles - DC drive with SS - Resonant load

28th December 2004, 03:35 AM	#9
Brett diyAudio Member Join Date: Jan 2002	Finally, tubeheads have found something to compete with the pointlessness of dB drag racing. And at last, a good use for 12AU7's

29th December 2004, 09:58 AM	#10
Geek diyAudio Member Join Date: Sep 2004	Brett, the cynic If you and Sch3mat1c met, you might be lifelong friends

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