The Radio Hat Challenge

GloBug · 02:51 AM

Build a portable tube amplifier into a hat, helmet, Jason Voorhees mask or whatever.

Can either be based on the original "Man from Mars Radio Hat" as seen in the example below OR amplifier for iPod etc.
Be creative, completely freestyle contest, as long as it's portable and tubed.

Winner will be chosen by fellow members of diyAudio and will receive 20 x .1 Quality Film Coupling Capacitors AND 2 NOS SYLVANIA 6CG8 Tubes. Made in Germany.
Free shipping World Wide
(Tubes were verified on a B&K 700 last year. I am not able to match them because somebody has been taking sockets out of the tester for other projects. Worst case scenario I can send a 3rd tube if you pay the postage.)

Open to present and future members of diyAudio.
-Contest will be closed on December 31st 2011 at 11:59PM est.
-Winner announced New Years Day 2012
-Winner may be asked to prove function and portability via YouTube, Skype etc OR emailed video clip.
-Post your entries and progress here.
-PM your votes by December 31st, 2011.

Hopefully this will spawn into a new regeneration of an open-sourced portable tube amp.
Radio Hat - Wikipedia, the free encyclopedia
Replica 1949 American Merri-Lei "Man From Mars" Radio Hat - YouTube

Pano · 7th December 2011, 02:55 AM

OK, but where do I find a 22.5V B cell?

GloBug · 7th December 2011, 03:13 AM

A couple of 3s Lipo's will get ya 22.2v.

Or you can use NiCad if you have a thick neck.

TheGimp · 7th December 2011, 04:19 AM

Or 3 - 9V alkaline. Although they are generally only 90-110mA-Hr.

I did a TV version in the 70s so I could listen to the news on TV while mowing the lawn, but it was sand based.

GloBug · 04:25 AM

As I said your not limited to the "radio hat", you can build a tube amp for an iPod, with NO RADIO, of whatever voltage you like.

I MADE A TYPO ON THE TUBES, Sorry, I always do that, they are 6GH8 x 2 I can't edit the first post anymore. Great for replacing 7199 tubes in Dynaco/kit ST70's etc.

costis_n · 7th December 2011, 05:26 AM

What can i say, with this hat on your head you will look ...challenged!

GloBug · 7th December 2011, 05:28 AM

LMAO!

GloBug · 1st January 2012, 12:03 PM

Contest is now closed.

Not one entry, lol.

I had a really good contest planned for this month with even better prizes, but I don't think I'll bother now.

Happy New Year.

vanofmonks · 1st January 2012, 02:36 PM

Quote:

Originally Posted by GloBug

Contest is now closed.

Not one entry, lol.

I had a really good contest planned for this month with even better prizes, but I don't think I'll bother now.

Happy New Year.

Well the contest was 3 weeks during the busiest holiday time of the year. I wouldn't be surprised if no one had time. If you do another contest, you might want to give it more time.

Chris

indianajo · 05:09 PM

Make the date 12/31/2012 I might compete. Still numb from 50 hours on a Greyhound bus last two weeks. I've got nuvistors in the attic- secret WWII "radio fuse" technology. Let's see, a tube SMPS for the B+? or a self booting thermal vibrator? Are Neon bulbs legal?

7th December 2011, 04:20 AM	#5
GloBug Banned Join Date: Jun 2011	As I said your not limited to the "radio hat", you can build a tube amp for an iPod, with NO RADIO, of whatever voltage you like. I MADE A TYPO ON THE TUBES, Sorry, I always do that, they are 6GH8 x 2 I can't edit the first post anymore. Great for replacing 7199 tubes in Dynaco/kit ST70's etc. Last edited by GloBug; 7th December 2011 at 04:25 AM.

1st January 2012, 05:06 PM	#10
indianajo diyAudio Member Join Date: Jan 2010 Location: Jeffersonville, Indiana USA	Make the date 12/31/2012 I might compete. Still numb from 50 hours on a Greyhound bus last two weeks. I've got nuvistors in the attic- secret WWII "radio fuse" technology. Let's see, a tube SMPS for the B+? or a self booting thermal vibrator? Are Neon bulbs legal? __________________ 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; 1st January 2012 at 05:09 PM.

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7th December 2011, 02:55 AM	#2
Pano diyAudio Moderator Join Date: Oct 2004 Location: North Carolina Blog Entries: 4	OK, but where do I find a 22.5V B cell?

7th December 2011, 03:13 AM	#3
GloBug Banned Join Date: Jun 2011	A couple of 3s Lipo's will get ya 22.2v. Or you can use NiCad if you have a thick neck.

7th December 2011, 04:19 AM	#4
TheGimp diyAudio Member Join Date: Aug 2009 Location: Johnson City, TN	Or 3 - 9V alkaline. Although they are generally only 90-110mA-Hr. I did a TV version in the 70s so I could listen to the news on TV while mowing the lawn, but it was sand based.

7th December 2011, 05:26 AM	#6
costis_n Tinkerer diyAudio Member Join Date: Aug 2008	What can i say, with this hat on your head you will look ...challenged!

7th December 2011, 05:28 AM	#7
GloBug Banned Join Date: Jun 2011	LMAO!

1st January 2012, 12:03 PM	#8
GloBug Banned Join Date: Jun 2011	Contest is now closed. Not one entry, lol. I had a really good contest planned for this month with even better prizes, but I don't think I'll bother now. Happy New Year.

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